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Service Manual Atlas Patient Monitor Welch Allyn 8500 SW Creekside Pl Beaverton, Oregon 97008 6200-43E Revision E Copyright 2007

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Page 1: Atlas Patient Monitor - Henry Schein

Service Manual

Atlas Patient Monitor

Welch Allyn8500 SW Creekside Pl

Beaverton, Oregon 970086200-43E Revision E Copyright 2007

Page 2: Atlas Patient Monitor - Henry Schein

ii Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Drawings and/or illustrations and/or part numbers contained in this document are for reference purposes only. For current revisions call the Welch Allyn Customer Service phone number listed in Section 1 page 2.

Part No. Rev. Description ECN# Date Approved6200-43E A New release of Atlas Service Manual 5-40429 10/99 RS/LP

6200-43E B Updated calibration proceduresUpdated performance verification proceduresUpdated drawing 620150 Rev B to Rev CUpdated drawing 620201 Rev A to Rev BUpdated drawing 620524 Rev A to Rev BAdded complete repair parts lists. Added calibration date table

5-44782 07/02 DK

6200-43E C Updated to reflect changes in hardware and software 5-45730 03/03 DK

Page 3: Atlas Patient Monitor - Henry Schein

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor iii

CONTENTSList of Figures ..................................................................................................................vii

List of Tables ......................................................................................................................x

Section 1: General InformationAbout the Atlas Monitor........................................................................................................1

Help Information ...................................................................................................................2

Agency Approvals .................................................................................................................3

Warning, Cautions and Notes................................................................................................3

Product Model Number Structure.........................................................................................5

623xP Main Menu Architecture............................................................................................6

622xP Main Menu Architecture............................................................................................7

621xP Main Menu Architecture............................................................................................8

Atlas System Block Diagram .................................................................................................9

Section 2: ServiceIncoming Inspection ............................................................................................................11

Calibration and Maintenance Schedule..............................................................................12

Setting Date and Time .........................................................................................................14

Pangea Communication Protocol ........................................................................................14

BP Calibration......................................................................................................................14

50mmHg Calibration............................................................................................................17

250mmHg Calibration..........................................................................................................17

CO2 Reset (623xx Models Only)..........................................................................................18

ET CO2 Calibration ..............................................................................................................19

No-Load Battery Voltage Calibration ..................................................................................20

Battery Voltage Calibration..................................................................................................21

Printer Print Adjustment .....................................................................................................22

Temperature Calibration......................................................................................................23

Calibration Date Set .............................................................................................................24

Explanation of an Atlas Service Screen..............................................................................25

Software Upgrade Procedure...............................................................................................27

Down Loading NVRAM Files..............................................................................................28

Page 4: Atlas Patient Monitor - Henry Schein

iv Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 3: Functional tests and Trouble Shooting

Power on Self Test ...............................................................................................................37

Menu Functional Test..........................................................................................................38

BP Test..................................................................................................................................40

Static Manometer Accuracy Test.........................................................................................41

BP Leak Test ........................................................................................................................42

Over 15 mmHg Test .............................................................................................................42

BP Dump Verification Test ..................................................................................................43

Hardware Fail Safe Tests .....................................................................................................43

ECG/Respiration Test...........................................................................................................44

SpO2 Test..............................................................................................................................45

Temperature Test .................................................................................................................45

CO2 Functional Test.............................................................................................................45

Battery Functional Test........................................................................................................46

Printer Functional Test ........................................................................................................47

Print on Alarm Test..............................................................................................................47

Software/Firmware ..............................................................................................................47

ECG Alarms Test ..................................................................................................................48

Respiration Alarms Test ......................................................................................................50

SpO2 Alarm Test ..................................................................................................................51

Silence Alarm Test...............................................................................................................52

CO2/RESP Test .....................................................................................................................52

Blood Pressure Alarm Test ..................................................................................................53

Trouble Shooting..................................................................................................................56

Section 4: Disassembly and Repair

About Section 4 ...................................................................................................................63

Battery Door Removal..........................................................................................................64

Battery Removal...................................................................................................................64

Rear Housing Removal ........................................................................................................65

Printer Cable and Display Cable Removal ..........................................................................66

Power Supply Ground Wire Removal.................................................................................66

Tie Wrap Removal................................................................................................................67

CPU Removal .......................................................................................................................67

Page 5: Atlas Patient Monitor - Henry Schein

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor v

Main PCB Removal ..............................................................................................................67

Main PCB Side Connector Removal....................................................................................68

Main PCB Hose and Wire Removal.....................................................................................68

Pump Removal.....................................................................................................................68

CO2 Exhaust Removal..........................................................................................................69

Pryon PCB Removal.............................................................................................................69

E-Pac Foam Removal (Top). ................................................................................................69

Power Supply Removal. ......................................................................................................70

Power Supply Fuse Location ..............................................................................................70

Fan Removal ........................................................................................................................70

E-Pac Removal (Lower)........................................................................................................71

Deflection PCB Removal......................................................................................................71

CRT Removal .......................................................................................................................71

Display PCB Removal ..........................................................................................................72

Printer Door Button Removal ..............................................................................................73

Printer Assembly Locking Tab Release. ..............................................................................73

Printer Positioning Slot Removal........................................................................................74

Printer Assembly Removal. .................................................................................................74

Printer Lip Assembly. ..........................................................................................................74

Printer Cable Routing. .........................................................................................................75

Appendix A: Theory of Operation

Power Supply Circuits.........................................................................................................77

Model 622 and Model 623...................................................................................................80

On/Off Circuits ....................................................................................................................81

Battery Charger ....................................................................................................................84

NIBP Circuits ......................................................................................................................87

CRT Deflection Board..........................................................................................................92

Vertical Amplifier: ...............................................................................................................92

Recorder Electronics............................................................................................................96

Power Supply – 24 Switcher...............................................................................................96

Motor Driver:........................................................................................................................97

Patient Isolated Circuits ......................................................................................................98

Linear Regulators and Filtering – Model 621 .....................................................................99

Page 6: Atlas Patient Monitor - Henry Schein

vi Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Linear Regulators and Filtering – Model 622 and 623.....................................................100

A/D Circuits .......................................................................................................................101

A/D Multiplexer.................................................................................................................102

Serial Communication.......................................................................................................103

Signal Isolation ..................................................................................................................104

ECG Circuits.......................................................................................................................104

Impedance Respiration (Model 622/623 only) .................................................................109

SpO2 Circuits .....................................................................................................................110

Appendix B: Repair Parts Lists

621N0 .................................................................................................................................113

621NP .................................................................................................................................116

621S0..................................................................................................................................119

621SP..................................................................................................................................121

622N0 .................................................................................................................................124

622NP .................................................................................................................................127

622S0..................................................................................................................................130

622SP..................................................................................................................................133

623NP .................................................................................................................................136

623SP..................................................................................................................................142

Appendix C: Interconnect Diagram

Interconnect diagram 620396 Rev A.................................................................................145

Appendix D: Atlas Drawings and Electrical Schematics

See List of Figures on page v for individual drawings.....................................................146

Appendix E: Calibration Date Table

Calibration Date Index Table. ............................................................................................187

Appendix F: Serial Number Cut in History. ...............................................211

Appendix G: Atlas Calibration and Functional Test Form........................213

Page 7: Atlas Patient Monitor - Henry Schein

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor vii

List of Figures

Figure 1-1. 623xP Main Menu Architecture. ........................................................................6

Figure 1-2. 622xP Main Menu Architecture. ........................................................................7

Figure 1-3. 621xP Main Menu Architecture. ........................................................................8

Figure 1-4. Atlas System Block Diagram ..............................................................................9

Figure 2-1. Example of a new HyperTerminal connection. ...............................................15

Figure 2-2. Choosing COM1 in HyperTerminal..................................................................15

Figure 2-3. HyperTerminal Port Settings. ...........................................................................16

Figure 2-4. Photo of Atlas BP calibration setup. ................................................................17

Figure 2-5. Example of CO2 calibration setup. ...................................................................21

Figure 2-6. Example and Explanation of an Atlas Service Screen ....................................25

Figure 2-7. Pangea prompt in HyperTerminal ....................................................................29

Figure 2-8. Choosing “Send Text File” in HyperTerminal.................................................29

Figure 2-9. Choosing directory where NVRAM files are stored. .......................................30

Figure 2-10. Choosing the nvram_cal_init.txt file. .............................................................30

Figure 2-11. Pangea screen after opening the nvram_cal_init.txt file. ..............................31

Figure 2-12. Pangea screen after opening the nvram_common.txt file. ............................31

Figure 2-13. Pangea prompt after opening the model# file................................................32

Figure 2-14. Pangea screen after loading a language file. ..................................................33

Figure 2-15. Pangea screen after downloading the nvram_printer.txt file. .......................34

Figure 2-16. Pangea screen nvram set serial command. ....................................................35

Figure A-1. Model 621 DC/DC circuit block diagram. .......................................................77

Figure A-2. On/Off Control Circuits. ..................................................................................78

Figure A-3. Model 621 Buck converter. ..............................................................................79

Figure A-4. Model 621 linear regulation. ...........................................................................80

Figure A-5. DC/DC circuit diagram.....................................................................................81

Figure A-6. Boost converter and off/on switch. .................................................................82

Figure A-7. Boost converter.................................................................................................83

Figure A-8. Battery charging. ..............................................................................................85

Figure A-9. Linear regulator. ...............................................................................................86

Figure A-10. NIBP PWM A/D converter. ............................................................................86

Figure A-11. PWM timing. ..................................................................................................87

Figure A-12. Primary transducer amplifier.........................................................................89

Figure A-13. Safety transducer amplifier............................................................................90

Page 8: Atlas Patient Monitor - Henry Schein

viii Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Figure A-14. Over pressure fault circuit. ............................................................................91

Figure A-15. Pump relay circuit..........................................................................................91

Figure A-16. Ramp generator circuit...................................................................................92

Figure A-17. Vertical amplifier circuit................................................................................93

Figure A-18. Horizontal amplifier grid voltage circuit. .....................................................95

Figure A-19. Video amplifier circuit. ..................................................................................96

Figure A-20. Recorder power supply circuit. .....................................................................97

Figure A-22. Print head temperature circuit. .....................................................................98

Figure A-23. Patient isolation circuit..................................................................................99

Figure A-24. Model 621 line regulation and filtering. .......................................................99

Figure A-25. Model 622/623 line regulation and filtering. ..............................................100

Figure A-26. A/D converter circuit. ..................................................................................101

Figure A-27. A/D multiplexer circuit. ..............................................................................102

Figure A-28. Serial communication circuit. .....................................................................104

Figure A-29. Defib protect and RFI filtering circuit. ........................................................105

Figure A-30. Input buffer circuit. ......................................................................................105

Figure A-31. Lead select circuit. .......................................................................................106

Figure A-32. Differential amp/slew rate amp circuit. ......................................................107

Figure A-33. Right leg drive circuit. .................................................................................107

Figure A-34. High pass and gain stage circuit. .................................................................108

Figure A-35. Temperature amplifier circuit......................................................................108

Figure A-36. Respiration drive circuit. .............................................................................109

Figure A-37. Respiration diff amp circuit.........................................................................110

Figure A-38. Gain and filter circuit...................................................................................110

Figure C-1. Atlas Interconnect Diagram............................................................................145

Figure D-1. Atlas model 200 main board..........................................................................147

Figure D-2. Atlas model 200 NIBP electronics. ................................................................148

Figure D-3. Atlas model 200 power supply......................................................................149

Figure D-4. Atlas Power isolation /SpO2 interface...........................................................150

Figure D-5. Atlas model 200 ECG amp. ............................................................................151

Figure D-6. Atlas ECG A/D interface.................................................................................152

Figure D-7. Atlas CPU subsystem. ....................................................................................153

Figure D-8. Atlas FPGA. ....................................................................................................154

Figure D-9. Atlas 200/210/220 I/O filters. ........................................................................155

Page 9: Atlas Patient Monitor - Henry Schein

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor ix

Figure D-10. Flash, SDRAM HRESET config word. .........................................................156

Figure D-11. Power PC MP C823 CPU. .............................................................................157

Figure D-12. Power distribution........................................................................................158

Figure D-13. Front panel display. .....................................................................................159

Figure D-14. Key board scanner. .......................................................................................160

Figure D-15. Temp/pulse LED drivers. .............................................................................161

Figure D-16. NIBP LED drivers. ........................................................................................162

Figure D-17. SpO2 LED drivers. ........................................................................................163

Figure D-18. CRT deflection board. ..................................................................................164

Figure D-19. Printer electronics. .......................................................................................165

Figure D-20. Model 220 main board. ................................................................................166

Figure D-21. 210/220 NIBP electronics.............................................................................167

Figure D-22. DC/DC power supply....................................................................................168

Figure D-23. Power isolation/SpO2 interface. ..................................................................169

Figure D-24. 210/220 ECG amp.........................................................................................170

Figure D-25. 210/220 ECG A/D interface..........................................................................171

Figure D-26. 210/220 Respiration circuit. ........................................................................172

Figure D-27. 210/220 serial communication. ...................................................................173

Figure D-28. 200/210/220 transformer isolation. .............................................................174

Figure D-29. 200/210/220 ECG patient cable. ..................................................................175

Figure D-30. 200/210/220 power supply sub assy. ..........................................................176

Figure D-31. 220 ETCO2 PCB assembly. ...........................................................................177

Figure D-32. 200/210/220 Power supply. .........................................................................178

Figure D-33. Nonin SpO2 Board........................................................................................179

Figure D-34. Motor Stepper. ..............................................................................................180

Figure D-35. Pump Pneumatic. .........................................................................................181

Figure D-36. 200/210/220 ECG cable assembly. ...............................................................182

Figure D-37. CO2 cable assembly. .....................................................................................183

Figure D-38. Nellcor sensor cable assy. ............................................................................184

Figure D-39. 200/210/220 Pneumatic sub assy.................................................................185

Figure D-40. 220 CO2 cable assy. ......................................................................................186

Page 10: Atlas Patient Monitor - Henry Schein

x Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

List of TablesTable 1-1. Operator manual part numbers. ...........................................................................1

Table 2-1. Atlas Packing List. ..............................................................................................11

Table 2-2. Tools Required for Service. ................................................................................13

Table 2-3. Software Revision Table .....................................................................................26

Table 2-4. Files needed to download language(s)...............................................................33

Table 3-1. Transducer pressure table...................................................................................41

Table 3-2 Resistor and temperature reference. ...................................................................45

Table 3-3. Atlas failure trouble shooting.............................................................................56

Table 3-4. Atlas failure trouble shooting.............................................................................57

Table 3-5. Atlas failure trouble shooting.............................................................................58

Table 3-6. Atlas failure trouble shooting.............................................................................59

Table 3-7. Atlas failure trouble shooting.............................................................................60

Table 3-8. Atlas failure trouble shooting.............................................................................61

Table A-1. Temperature coefficient. ....................................................................................84

Table B-1. Atlas 621N0 repair parts ..................................................................................113

Table B-2. Atlas 621NP repair parts. .................................................................................116

Table B-3. Atlas 621S0 repair parts...................................................................................119

Table B-4. Atlas 621SP repair parts...................................................................................121

Table B-5. Atlas 622N0 repair parts. .................................................................................124

Table B-6. Atlas 622NP repair parts. .................................................................................127

Table B-7. Atlas 622S0 repair parts...................................................................................130

Table B-8. Atlas 622SP repair parts...................................................................................133

Table B-9. Atlas 622NP repair parts. .................................................................................136

Table B-10. Atlas 623SP repair parts.................................................................................139

Table B-11. Atlas 623NP repair parts. ...............................................................................142

Table D-1. Atlas drawings revision page...........................................................................146

Table F-1. Changed to a new BP Valve..............................................................................211

Table F-2. Changed E-Pac and Changed to class B power supply. ..................................211

Table F-3. Upgraded printer cable to a cable with foam tape. .........................................211

Table F-4. Upgraded Revision level of CPU from 501 to 502...........................................211

Table F-5. Upgraded Revision level of Nellcor SpO2 to 506............................................212

Page 11: Atlas Patient Monitor - Henry Schein

General Information Section 1

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 1

About the Atlas Monitor

The Atlas Monitor combines in one unit all the necessary measurements for patients under anesthesia, for surgical recovery, or bed side monitoring. See Section 1, page 5 for a complete listing of product models and options.

According to the standards of care for Nurse Anesthetists and Anesthesiologists, all patients receiving conscious sedation are to be continuously monitored throughout the procedure and recovery phase by ECG, SpO2, and NIBP. CO2 monitoring is a requirement during gas anesthesia (when patient is ventilated).

The Atlas combines a CRT to display ECG, CO2, SpO2, and respiration waveforms. It utilizes LEDs for the other numeric values to maximize visibility and viewing angle. Although not designed to be a transport product, the monitor has an integral handle and it is small and light enough at 13 lbs. to be easily moved.

A battery was added to enable the monitor to be used if there is a power outage or to be unplugged momentarily when moved with the patient from the surgery room to the recovery room. The battery was not designed to make the Atlas into a transport monitor. The Atlas monitor should be plugged into AC as much as possible to give you the maximum battery backup time when there is a power outage. It will maintain unit operation for up to an hour when power is interrupted if the battery is fully charged.

WARNING: Discharging the battery frequently will shorten the battery life and will shorten the battery backup time.

IMPORTANT: For a complete description on the function and use of the Atlas, as well as user safety warnings, cautions, and warranty information, read and understand the Atlas Operator’s Manual. See the Table 1-1 below for correct Operator’s Manual part #.

Table 1-1. Operator manual part numbers.

Language Part#

English 6200-42E

French 6200-42F

German 6200-42G

Italian 6200-42I

Spanish 6200-42S

Portuguese 6200-42P

Japanese 6200-42J

Chinese 6200-42C

Page 12: Atlas Patient Monitor - Henry Schein

2 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 1 General Information

Help Information

To assure correct operation and performance all service and repairs must be performed by fully trained and properly equipped personnel, using genuine replacement parts and correct procedures. Failure to do so will also invalidate the product warranty.

MD International 11300 N.W. 41st Street Miami, FL 33178 USA tel: 305-669-9003 fax: 305-669-1971

Welch Allyn Inc. State Street Plant /Corporate Headquarters 4341 State Street Road Skaneateles Falls, NY 13153-0220, USA tel: 1-800-535-6663 315-685-4100 fax: 315-685-3361 www.welchallyn.com/medical/support/tech

Welch Allyn GMBH Zollerstrasse 2-4 72417 Jungingen, Germany tel: (011) 49-7477-927186 fax: (011) 49-7477-927193

Welch Allyn France SARL 814 rue Charles de Gaulle 77100 Mareuil les Meaux France tel: ( 011) 33 1.6009.3366 Fax: (011) 33 1 .6009.6797

Welch Allyn UK Ltd St. Georges House Vernon Gate, Derby England DE1 1UQ tel: (011) 44-01332-206208 fax: (011) 44-01332-206209 mob: (011) 44-0467-301814

Welch Allyn Australia Pty The Metro Centre Unit 5 38-46 South Street Rydalmere NSW 2116, Australia Postal address: PO Box 132 Rydalmere NSW 1701, Australia tel: (011) 612 9638-3000 fax: (011) 612 9638-3500

Welch Allyn Singapore Ltd 300 Beach Road, #25-08 The Concourse Singapore 199589, Singapore tel: (011) 65-291-0882 fax: (011) 65-291-5780

China Service Center Room 708 Central Plaza No. 277 Huang Pi Bei Rd. Huang Pi District Shanghai 200003 China tel: (011) 86-21-63279631 fax: (011) 86-21-63279632

Welch Allyn Japan K.K. Bon Marusan 8F, 3-5-1 Kanda Jinbo-Cho, Chiyoda-Ku Tokyo 101-0051 Japan tel: (011) 813-5212-7391 fax: (011) 813-3261-7372

Page 13: Atlas Patient Monitor - Henry Schein

General Information Section 1

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 3

Agency Approvals

Warning, Cautions and Notes All operating and service personnel should be familiar with the general safety information in this summary. Specific warnings and cautions will also be found throughout the opera-tors manual. Such specific warnings and cautions may not appear here in the summary.

US74227LISTEDC

ET L L i s t e dU L 2 6 01- 1 ,C SA C 2 2 . 2 N o . 6 01. 1I E C 6 0 6 01- 1 , AS 3 2 0 0 . 1I E C 6 0 6 01- 1- 2

The CE mark on this product indicates that ithas been tested to and conforms with the

within the 89/336/ECCElectromagnetic Compatibility Directive.provisions noted

N344

Australia EMC Framework Compliance

Electrical Shock Hazard

CAUTION

Page 14: Atlas Patient Monitor - Henry Schein

4 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 1 General Information

ATTENTION. Consult accompanying document

Handle With Care

MAX95%

Storage Humidity. Refer to technical specifications in operator'sfor more details.

Storage temperature. Refer to technical specifications in operator'smanual for more details.

PB

Lead Acid Battery. For disposal see maintenancesection in opertor's manual

Page 15: Atlas Patient Monitor - Henry Schein

General Information Section 1

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 5

Product Model Number Structure

621S0-E1 ECG, Nonin SpO2, NIBP

621SP-E1 ECG, Nonin SpO2, NIBP, Printer

621N0-E1 ECG,Nellcor SpO2,NIBP

621NP-E1 ECG,Nellcor SpO2,NIBP, Printer

622S0-E1 ECG, Nonin SpO2, NIBP, Temp, Respiration, Battery, RS232

622SP-E1 ECG, Nonin SpO2, NIBP, Temp, Respiration, Battery, RS232, Printer

622N0-E1 ECG, Nellcor SpO2, NIBP, Temp, Respiration, Battery, RS232

622NP-E1 ECG, Nellcor SpO2, NIBP, Temp, Respiration, Battery, RS232, Printer

623SP-E1 ECG, Nonin SpO2, NIBP, ETCO2, Temp, Respiration, Battery, RS232, Printer

623NP-E1 ECG, Nellcor SpO2, NIBP, ETCO2, Temp, Respiration, Battery, RS232, Printer

Product Structure Meaning:

The first three digits in the product structure sequence designates the model number. The fourth character in the sequence designates the SpO2. The fifth character in the sequence designates if it has a printer or not. The first suffix designates the country language when shipped. The second suffix designates the power cord shipped with the Atlas.

First Three Characters: Model number, 621, 622, 623

Fourth Character: N=Nellcor SpO2, S=Nonin SpO2

Fifth Character: P=Printer, 0=No Printer

First Suffix: E = English, F= French, G= German, I= Italian, S= Spanish, P= Portuguese C = Chinese, J= Japanese

Second Suffix:

1 = US, Canada, Japan2 = European4 = United Kingdom 6 = Australian

Page 16: Atlas Patient Monitor - Henry Schein

6 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 1 General Information

623xP Main Menu Architecture

Figure 1-1. 623xP Main Menu Architecture.

NOTE: The Print on alarm function in Advanced configuration mode screen is only available with software version BB.2.2000 and higher.

* NOTE: The Display A/D channels function in the Service Mode Screen only allowsyou to view system information by pressing the SET button. It does not allow

you to change system settings.

LanguageSilence durationECG gainECG lead setECG speedECG bandwidthInitial pressureMAPSecond trace selectionTemperature unitsRespiration speedCOPrint on alarm (only with software Rev.

BB.2.2000 or higher)

units2

623xP

Waveformscreen

Date/TimeScreen

TrendScreen

Set date & time

Verify manometerReset to factory defaultsBattery testCalibrate CoCRT test pattern

LED testButton testDisplay A/D channels *

2Service ModeScreen

SaveSettings

CoReset

2

AdvancedConfiguration

Date/TimeScreen

Advanced Configuration Screen

Service Mode Screen

Printer test pattern (Models 621SP and621NP only)

Page 17: Atlas Patient Monitor - Henry Schein

General Information Section 1

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 7

622xP Main Menu Architecture

Figure 1-2. 622xP Main Menu Architecture.

NOTE: The Print on alarm function in Advanced Configuration Screen is only available with software version BB.2.2000 and higher.

NOTE: On models 622S0 and 622N0 delete the Print test pattern function in the Service Mode Screen. Model 622S0 and 622N0 do not come with printers.

* NOTE: The Display A/D channels function in the Service Mode Screen only allows you to view system information by pressing the SET button. It does not allow you to change system settings.

LanguageSilence durationECG gainECG lead setECG speedECG bandwidthInitial pressureMAPSecond trace selectionTemperature unitsRespiration speedPrint on Alarm (Only with software Rev.

BB.2.2000 and higher.)

622xP

Waveformscreen

Date/TimeScreen

TrendScreen

Set date & time

Verify manometerReset to factory defaultsBattery testCRT test patternPrinter test pattern (Models 622SP and

622NP only)LED testButton testDisplay A/D channels *

Service ModeScreen

SaveSettings

AdvancedConfiguration

Date/TimeScreen

Service Mode Screen

Advanced Configuration Screen

Page 18: Atlas Patient Monitor - Henry Schein

8 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 1 General Information

621xP Main Menu Architecture

Figure 1-3. 621xP Main Menu Architecture.

NOTE: The Print on alarm function in Advanced configuration mode screen is only available with software version BB.2.2000 and higher.

NOTE: On models 621S0 and 621N0 delete the Print test pattern function in the Service Mode Screen. Model 622S0 and 622N0 do not come with printers.

* NOTE: The Display A/D channels function in the Service Mode Screen only allows you to view system information by pressing the SET button. It does not allow you to change system settings.

LanguageSilence durationECG gainECG lead setECG speedECG bandwidthInitial pressureMAPSecond trace selectionPrint on Alarm (Only with software Rev.

BB.2.2000 and higher.)

621xP

Waveformscreen

Date/TimeScreen

TrendScreen

Set date & time

Verify manometerReset to factory defaultsCRT test patternPrinter test pattern (Models 621SP and

621NP only)LED testButton testDisplay A/D channels *

Service ModeScreen

SaveSettings

AdvancedConfiguration

Date/TimeScreen

Service Mode Screen

Advanced Configuration Screen

Page 19: Atlas Patient Monitor - Henry Schein

General Information Section 1

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 9

Atlas System Block Diagram

Figure 1-4. Atlas System Block Diagram

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Page 20: Atlas Patient Monitor - Henry Schein
Page 21: Atlas Patient Monitor - Henry Schein

Service Section 2

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 11

Incoming InspectionNOTE: Use the following guidelines when unpacking the monitor from its shipping carton.

1. Before opening the monitor shipping carton, check for damage.

2. If damage is apparent, stop unpacking the carton and contract the shipping company forfurther instructions. If the carton is intact, unpack the monitor.

3. With the monitor out of its carton, check to see that all the items listed on the packing slip are in the shipping carton. See table 2-1 below.

Table 2-1. Atlas Packing List.

4. If an item is missing, first check the carton, then check with your receiving department. If necessary contact Welch Allyn at the address and phone number shown on Section 1.

5. Clean and disinfect by following the instructions printed in the Operator Manual.

NOTE: Perform all functional tests as listed in Section 3 before and after servicing.Operate the Atlas to verify the customer complaint before making any changes to the unit. Call the customer if the complaint is unclear. If the unit has caused or is suspected of having caused an injury of any type: DO NOT DISASSEMBLE OR REPAIR THE UNIT IN ANY WAY. Contact Welch Allyn Customer Service immediately.

Qty. Description1 Warranty card1 Adult Durable 1pc. Cuff1 Large Adult Durable 1pc. Cuff1 5ft. Straight Hose1 ECG Patient Cable (Three Lead)3 ECG Lead Wires 1 SpO2 Sensor/ Finger Clip1 ETCO2 Water Trap 623 only1 ETCO2 Scrubber 623 only1 Nasal Canula 623 only1 Atlas Monitor1 Detachable Power Cord1 Printer Paper Roll1 Operation Manual1 Skin Temperature Probe 622/623 only

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12 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 2 Service

Calibration and Maintenance ScheduleThe Atlas Monitor must be serviced by authorized Welch Allyn personnel or agents at 6 month intervals. Maintenance requirements are specified for 6 month and 12 month service intervals. The monthly CO2 Reset operation can be performed by the user.

Service Interval Maintenance Requirements

Every 6 months: CO2 Calibration

Every 12 months: BP calibration, CO2 reset, battery voltage calibration, printer adjustment,and temperature calibration.Complete functional test

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Service Section 2

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 13

Table 2-2. Tools Required for Service.

Description Part# Company100cc Test Volume T-112189 Welch Allyn500cc Test Volume T-112854 Welch AllynT-10 TORX screwdriver XTD-10 Xcelite brand7/16" deep socket for Temperature Port nut Generic 1/4" driveSqueeze Bulb and Valve 5088-01 Welch AllynCalibrated Manometer (0-10PSIG) Digimano 1000 NetechBio-Tek (NIBP TESTER) BP Pump Bio-TekPneumatic Tubing 5200-19 Welch AllynPneumatic Tubing (coiled) 5200-19M Welch Allyn"Y" Fitting "Optional" 9586TPK4 Welch Allyn"T" Fitting (3) 9858TPK4 Welch AllynNonin Patient Simulator 8000S NoninNonin Cable 5200-52 NoninCalibrated Thermometer for 90F to 115F range 1002-3FC ERTCOLG, Adult Cuff/Bag 5200-02 Welch AllynNellcor Patient Simulator For atlas with "MP 204/205 SpO2 PCB ONLY " SRC-2 Nellcor

Nellcor Patient Simulator "MP 506 PCB ONLY " SRC-MAX Nellcor

Nellcor Sensor Cable "Purple Connectors" will work on all Atlas units with 204/205/506 SpO2 PCB DEC-8 NellcorNellcor Sensor Cable "Gray Connectors" "For Atlas units with MP 204/205 SpO2 PCB only" EC-8 NellcorECG Simulator with Impedance Respiration 214B DNI NevadaECG Patient Cable (5 lead AHA) 6200-02 Welch AllynECG Patient Cable (5 lead IEC) 6200-04 Welch AllynECG leads, 5 Lead (IEC) 6200-08 Welch AllynECG leads, 5 Lead AHA 6200-06 Welch AllynCertified Gas "10% CO2,10% O2, balance N2" 0304724SRBD Scott Medical ProductsETCO2 Water Trap (package of 5) 6200-20 Welch AllynETCO2 Scrubber 6200-21 Welch AllynETCO2 Adult Nasal Sample Line 6200-22 Welch AllynSurface Sensor, Temperature 6200-15 Welch AllynAtlas Repair and Calibration Software 620538 Welch Allyn

Printer Paper - Case 6200-40 Welch AllynDigital Multimeter with 10mV accuracy on a 10V scale; 10A RangeAdjustable DC power supply 5A @ 7VBattery cable assembly 620174-1 Welch AllynAtlas interface cable to PC 6200-60 Welch AllynPC with Windows 95 and above and with HyperTerminal serial port software

Part of Windows 95 & above

1/4" Mono Phono Jack1000 Ohm precision resistor 1%1200 Ohm precision resistor 1%1350 Ohm precision resistor 1%1540 Ohm precision resistor 1%1870 Ohm precision resistor 1%

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14 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 2 Service

Setting Date and TimeNOTE: Check date and time before doing any calibration. Set date and time if incorrect. Set time and date as follows;

1. Turn Atlas on.

2. Press CLOCK button next to power on button to check date and time. Use the far rightSELECT button to scroll. Highlight the date or time that needs changed.

3. Press the SET button to adjust date and time.

4. Press CLOCK button to exit.

Pangea Communication ProtocolThe Pangea Communication Protocol allows interaction of the Atlas with the computer through the serial interface port. A prompt is emitted at the computer screen when the instrument powers up and is ready to accept commands. The prompt is Pangea>. A prompt is emitted after the completion of each pangea command. Pangea commands are case sensi-tive. They are in English only.

BP CalibrationRequired material.1. 500cc vessel 4. Calibrated digital manometer2. Squeeze bulb with one-way valve 5. Tubing and T fittings3. PC with HyperTerminal 6. Serial cable

NOTE: To start HyperTerminal you must have Windows7 95 or higher installed on your computer.

1. From the Windows main screen follow the following sequence:Start !Programs ! Accessories ! Communication ! HyperTerminal

2. HyperTerminal setting are:9600 baud rate, 8 bit word, 1 stop bitno parity, no flow controlANSI character set

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Service Section 2

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 15

3. When you open HyperTerminal you will see a screen similar to the example in Figure2-1. You will be prompted for a connection description. Choose any name. After youtype in a name click OK.

Figure 2-1. Example of a new HyperTerminal connection.

4. The next window you will see will be the window as shown in Figure 2-2. Click on Connect using then click on COM1.

Figure 2-2. Choosing COM1 in HyperTerminal.

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16 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 2 Service

5. Set the port settings as shown in the example in Figure 2-3. Now click OK.

Figure 2-3. HyperTerminal Port Settings.

6. Connect the pressure meter, bulb, and 500cc vessel to BP port with “T” connectors asshown in photograph Figure 2-4.

7. Connect the Atlas to PC with serial cable.

8. Turn the Atlas on. Start HyperTerminal on PC. Press the <Enter> key and you should seea Pangea> prompt.

NOTE: Take no more than 3 minutes for the 50mmHg calibration nor more than 3 minutes for the 250mmHg calibration as the Atlas will automatically, as a safety feature, open the blood pressure valve. If this happens you will have to turn the Atlas off then back on again and restart the calibration again.

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Service Section 2

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 17

Figure 2-4. Photo of Atlas BP calibration setup.

50mmHg Calibration1. Enter the following commands at the Pangea prompt.

Pangea> bp valve close <ENTER>Pangea> bp safety off <ENTER>Pangea> bp cal 5000 Do not press <ENTER> yet!

2. Raise the pressure with bulb to as close to 50.00mmHg as possible. Now press <ENTER>.

3. Release the pressure.

250mmHg Calibration1. Enter the following command

Pangea> bp cal 25000 Do not press <ENTER> yet!

2. Raise the pressure with bulb as close to 250.00 mmHg as possible. Now press < ENTER >

3. Enter the following command to save the calibration in the Atlas.Pangea> nvram write <ENTER>

4. Release the pressure.

Calibrated 500cc VolumeT FittingsPressureMeter

Squeeze Bulb

T112854

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18 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 2 Service

CO2 Reset (623xx Models Only)

Required material. 1. Watertrap 2. Scrubber

NOTE: The Scrubber looks similar to a watertrap, but it is filled with white granules. The scrubber is included with the 623XX models only.

NOTE: Make sure date and time are correct before performing the CO2 reset.

1. Turn Atlas on. Make sure the watertrap and scrubber are NOT attached to the Atlas.

2. Press the DATE/TIME button on the lower right of the monitor. The Set Date and Timeand Other Options menu will be displayed.

3. Press the CO2/RESP ALARMS Off button. The CO2 Reset screen will appear.

4. You will see the following messages on the CRT.“CO2 Reset”“Install CO2 scrubber”“Press Trend to abort”

5. Install the watertrap to the Atlas. Install the scrubber to the watertrap.

6. You will see the following instructions on the screen.“Warming up” will be flashing on CRT.“May take up to five minutes” on CRT.“Press Trend to abort” on CRT.

7. After about 5 minutes you will see on the CRT.“CO2 Reset”“Reset complete”“Remove CO2 scrubber”“Press the trend button to exit”

8. Remove the CO2 watertrap and scrubber.

9. Press TREND button to return to idle screen.

Replace watertrap after every six hours of use. Treat watertrap and used CO2 sample lines as bio hazard material!

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Service Section 2

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 19

ET CO2 Calibration

Required material:1. Tank of approximately 10% CO2, balance N2 (certified) Blood Gas Mixture.2. Tubing and T connectors.3. Watertrap and scrubber.

1. Make sure the watertrap and scrubber are not attached to the Atlas. Turn the Atlas on.

2. Place the instrument into the Service Mode by pressing the DATE/TIME button. Makesure date and time are correct. Press the LEAD SELECT button.

3. Press SELECT button and scroll down to Calibrate CO2. The message “Install CO2 Scrubber” will appear on the right side of screen.

4. Attach the scrubber to the water trap.

5. Insert the scrubber/water trap assembly into water trap socket. The message “Enter span gas value using Set button 10%” will appear.

6. Press the SET button to change the value of span gas being used. The factory defaultvalue is 10%. Calibrate with a 8% to 12% certified CO2 concentration known to be±0.01%).

7. The message press “BP Start/Cancel” will appear at the bottom right of CRT. Press theBP/Start/Cancel button.

8. If you receive a “Calibration Failed” message at this point, check the date. If date is2022 or above it will fail CO2 calibration.

9. Next you will see a message “Warming up”. After the Atlas warms up you will see amessage “Attach CO2 gas”. Remove the scrubber from the CO2 water trap. Do notremove water trap.

10.Attach the certified source of CO2 gas to the CO2 side-stream sampling tube as per

Figure 2-5 below.

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20 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 2 Service

Figure 2-5. Example of CO2 calibration setup.

CAUTION: IMPROPER USE,STORAGE OR HANDLING OF COMPRESSED GAS VESSELS CAN CAUSE DEATH OR INJURY. FOLLOW GAS MANU-FACTURES SAFETY PROCEDURES!

11.Adjust the CO2 regulator just enough to allow a small amount of gas to flow out of thevent (approximately 2 psi).

12.Press the BP START/CANCEL button. The message: “Sampling” will appear on CRT.“CO2 calibration successful” or “CO2 calibration failed” will appear on the CRT display.

13.Press the TREND button to exit.

No-Load Battery Voltage CalibrationNOTE: No-Load Battery Voltage Calibration procedure is for models 622 and 623 only. If you disconnect the battery you must reset time and date after you reconnect the battery.

Specifications: No load battery charge 6.85 VDC

Required materials: DVM

1. Remove the battery and disconnect the battery leads from the Atlas. Use the DVM tomeasure across the connectors, red+ and black-.

2. Adjust the voltage to 6.85 VDC by turning potentiometer R338, located behind the rightbattery jack. Turning clockwise will increase the no-load voltage and counter clockwisewill decrease the no-load voltage.

Vent

WaterTrap

CO2

Adjust Regulator toApproximately 2 psi

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Service Section 2

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 21

Battery Voltage CalibrationRequired materials.

1. DC power supply rated: 7 VDC at 5A2. DMM / DVM with 10mV resolution on a 10 DC volt scale.3. PC with HyperTerminal4. Serial interface cable

1. Connect the serial cable to the PC and Atlas.

2. Hyper Terminal Settings are:9600 Baud, 8 bit word, 1 stop bitno parity, no flow controlANSI character setFind HyperTerminal in Windows 95 or higherStart !Programs!Accessories ! Communication! HyperTerminal

NOTE: Make sure the Atlas IS NOT plugged into AC for this calibration procedure.

3. Remove and disconnect the battery from Atlas.

4. Set the power supply to 6.8VDC " 200mV and connect the power supply to the batteryconnector on the Atlas.

5. Turn Atlas on..

6. Reduce the power supply to 6.0VDC and measure the voltage at the battery connector(at the Atlas) to the nearest 10mV.

NOTE: Do not measure at the power supply, since cable resistance will introduce error.

7. At the HyperTerminal prompt type:Pangea> power cal XXXX <ENTER>

NOTE: XXXX represents the measured voltage in millivolts no decimal point. For example, if you measured 6.010VDC at the battery connector, use the command “power cal 6010 <ENTER>”.

8. The Atlas will respond: raw = ZZZZ mV true = 6010 mV OK

NOTE: ZZZZ is the raw uncalibrated reading that the instrument made.

9. Reduce the power supply to 5.6 VDC. You should soon hear the “low battery” alarm.

10.Measure the voltage at the battery connector to the nearest 10mV.

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22 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 2 Service

11.At the HyperTerminal prompt type:Pangea> power cal XXXX <ENTER>

NOTE: XXXX represents the measured voltage in millivolts with no decimal point. For example if you measured 5.590 volts at the battery connector, then you would enter the command “power cal 5590” <ENTER>.

12.The Atlas will respond:raw = ZZZZmV true = 5590 OK

NOTE: ZZZZ is the raw uncalibrated reading that the instrument made.

13.Finish the calibration by typing: Pangea> hw reset <ENTER>

NOTE: This will re-boot the Atlas.

14.Turn the Atlas off and reinstall the battery.

15. Reset time and date.

Printer Print Adjustment

1. Install new paper.

2. Turn Atlas on.

3. Attach an ECG simulator to Atlas and set simulator for a heart rate of 60 bpm, normalsinus rhythm.

4. Press PRINT button. Evaluate the darkness of waveform and text printout.

5. If either need to be changed press DATE/TIME button then press LEAD SELECT buttonto access Advanced Configuration menu.

6. Press SELECT button and scroll down to Printer Test Pattern. Then Press HR ALARMS OFF button

7. Two lines will be displayed:1. Waveform+1282. Text+ 78

NOTE: These two numbers are the factory defaults and are a good starting point if the sys-tem is printing poorly or not at all.

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Service Section 2

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 23

8. The left SET button controls the waveform darkness and the right SET button controlsthe text darkness.

NOTE: Pressing the SET button up will increase the number and darken the waveform while pressing the SET button down will decrease the number and will lighten the wave-form.

9. Make changes to the printout as needed.

10.Press Trend button to return to waveform screen.

Temperature CalibrationRequired Material:

1. PC with Windows7 95 or higher 4. 1/4O mono phono jack 2. Atlas serial cable 5. Soldering iron and solder 3. 1k Ohm, 1/2 watt precision resistor 6. Ohm Meter

1. Solder the 1 K Ohm resistor to 1/4” mono phono jack.

2. Measure the resistance at the tip of the phono jack. Record that resistance reading, to twodecimal points.

3. Plug the phono jack into the Atlas.

NOTE: The Atlas will show a temperature reading in the temperature display.

4. Start HyperTerminal on PC.

5. Hyper Terminal Settings are:9600 Baud, 8 bit word, 1 stop bitno parity, no flow controlANSI character setFind HyperTerminal in Windows7 95 or higherStart !Programs ! Accessories ! Communication ! HyperTerminal

6. At the Pangea prompt Type: PANGEA> temp cal XXXXXX <ENTER>

NOTE: XXXXXX is the resistance reading you measured and recorded in milliohms at the tip of the mono phono jack.

Example: If you measure 1000.40 ohms at the tip of the phono jack then you would type temp cal 100040 <Enter>.

7. Wait four seconds then type: PANGEA> temp state <ENTER>. You will see a value returned at the Pangea prompt.

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24 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 2 Service

8. Verify that the resistance given by the above command returns a value " 0.5 ohms.

9. Verify temperature accuracy as outlined in Chapter 3, Table 3-2.

Calibration Date Set

NOTE: After calibrating the Atlas you must reset the calibration date. The calibration date is the date you performed the calibration. The calibration date appears in the Service Mode menu. See Figure 2-6 for an explanation of the Service screen.

1. At the Pangea prompt type.

Pangea> nvram set cal_date XXXX <ENTER>

NOTE: XXXX is the number of days from January 1, 1998 until the present date. See APPENDIX E for that number or calculate manually.

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Service Section 2

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 25

Explanation of an Atlas Service Screen

Figure 2-6. Example and Explanation of an Atlas Service Screen

Line A Indicates that the Atlas is a model 220 and that the Atlas has a printer. If the Atlas did not have a printer then the text “with printer” would be absent. The date field following indicates the date the Atlas was last calibrated.

Line B starts with a numeric sequence. The first three digits are the model number of the Atlas. The next five numbers are the Atlas serial number. The next sequence,alphanumeric, indicates what software version is currently loaded into the Atlas. The third sequence, alphanumeric, indicates what version boot software is currently loaded into the Atlas.

Line C starts with the SpO2 OEM board used in the Atlas. There are two SpO2 OEM boards used in the Atlas. One is Nellcor and the other is Nonin. The next sequence indicates the model of the SpO2 board. The next sequence, that starts with a letter “V”, is the version soft-ware used with the current SpO2 board. The date following the SpO2 software is the date the OEM loaded the software into the SpO2 board. SpO2 OEM software can not be upgraded. If the most current software is needed, you will need to replace the SpO2 board.

Line D is the CO2 information if your Atlas has CO2 installed. Only models 623 have CO2 installed. If your Atlas does not have CO2 installed then line D will be absent. If your Atlas has CO2 installed then line D will start with CO2 followed by a numeric number. That numeric value is the software loaded into the CO2 board. The next alphanumeric sequence, starting with a “V”, is the version of that software. The next numeric sequence starting with a “#” is the serial number of the CO2 board. The next sequence, a date, is the date the CO2 was last calibrated. The last sequence, a date, is the date the CO2 was reset. CO2 OEM soft-ware can not be upgraded. If the current software is needed, you will have to replace the CO2 board.

Service Mode

Verifyff manometeReset to factory default

Battery testCalibrate CO2

CRT test patternPrinter test pattern

LED testButton test

Display A/D channels

Select a test

Model 220 with printer Cal:27 Nov 2002Sn: 62304064 Sw: BB.025000 Boot: AA.01.0000SpO2: NELLCOR MP506 V1.8.0 6/21/02CO2 1.0 V3.00 #2542 Cal: 27 Nov 2002 14 Nov 2002

Press the Trend button to exit

0.00

A

B

C

D

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26 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 2 Service

Table 2-3. Software Revision Table.

Model Operating System Boot loader Nellcor Nonin Pryon621S0 AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V7621S0 BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V7621S0 BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7621S0 BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V7

621N0 BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V1.8.1.0, 10/14/02

621SP AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V7621SP BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V7621SP BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7621SP BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V7

621NP BB.02.5000, 10/14/02 AA.01.0000, 6/20/02 V1.8.1.0, 10/14/02

622S0 AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V7622S0 BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V7622S0 BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7622S0 BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7622S0 BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V7

622SP AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V7622SP BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V7622SP BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7622SP BB.02.5000, 6/14/02 AA.01.0000, 6/20/99 V7

622N0 AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97622N0 BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97622No BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97622N0 BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V 1.8.1.0 10/14/02

622NP AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97622NP BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97622NP BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V 1.2.0.0 10/14/02622NP BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V 1.8.1.0 10/14/02

623SP AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V7 0.E V1.00623SP BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V7 0.E V1.00623SP BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V7622SP BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V7

623NP AA.01.4000, 9/8/99 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97 0.E V1.00623NP BB.02.0000, 4/4/01 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97 0.E V1.00623NP BB.02.2000, 6/4/02 AA.01.0000, 6/20/99 V 1.2.0.0 12/17/97623NP BB.02.5000, 10/14/02 AA.01.0000, 6/20/99 V 1.8.1.0 10/14/02

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Service Section 2

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 27

Software Upgrade ProcedureNOTE: The following procedures are required to upgrade the software on a fully function-ing Atlas or to reload software after replacing the CPU board. The download utility “atlas_dl.exe” loads the following files automatically.

1. atlas.out.gz2. nvram_common.txt3. nvram_(model#).txt 4. nvram_(language).txt

“Atlas_dl.exe” will also query the Atlas to determine what model number the Atlas is and what language to download.

Equipment or supplies required:1. PC with Windows7 95 or higher2. Atlas serial cable3. File: atlas_dl.exe (Included in the Atlas Repair Software listed in Table2-2.)

NOTE: Make sure you have HyperTerminal turned off or the following utility download will not work!

1. Run the program atlas_dl.exe from the CD or copy the file to your hard drive and run theprogram from there.

2. Connect the serial cable between the Atlas and the PC s’“COM1 port”.

3. Turn your computer on and locate the “atlas_dl.exe” file.

4. Double left click on the “atlas_dl.exe” file.

5. When the file starts to download, the CRT will go blank on the Atlas.

NOTE: Do not use the computer while the program is downloading.

6. After down loading is complete, check all alarm settings and all user advanced configuration settings since these are RESET by this utility software download procedure.

NOTE: Stop here if you are just upgrading software on a fully functional Atlas monitor or if you have replaced the CPU board.

NOTE: If you have replaced the MAIN BOARD then you MUST continue with the next procedure (DOWNLOADING NVRAM FILES).

NOTE: Perform the following NVRAM downloading procedure if you have replaced the MAIN BOARD. The NVRAM resides on Main Board.

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28 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 2 Service

Down Loading NVRAM FilesRequired Materials.

1. Computer with Windows7 95 or higher.2. The latest Atlas repair software. Call your local Welch Allyn representative.

1. Once you have procured the latest Atlas Repair Software, you will be able to run the programs straight from the CD or copy the files to your hard drive.

NOTE: Through HyperTerminal you will need to load the following files:1. nvram_cal_init.txt2. nvram_common.txt3. model# of Atlas

3.1.You will load “nvram200.txt” if your Atlas is a model 621xx.3.2.You will load “nvram210.txt” if your Atlas is a model 622xx.3.3 You will load “nvram220.txt” if your Atlas is a model 623xx.

4. “language.txt”Any combination of or all of the following files4.1 “nvram_english.txt” for the English language4.2 “nvram_french.txt” for the French language4.3 “nvram_german.txt” for the German language4.4 “nvram_spanish.txt” for the Spanish language4.5 “nvram_potuguese.txt” for the Portuguese language4.6 “nvram_italian.txt” for the Italian language4.7 “nvram_chinese.txt” for the Chinese language4.8 “nvram_japanese.txt” for the Japanese language

5. printer.txt (if fitted with a printer), or no_printer.txt. (if not fitted with a printer)

NOTE: After loading the preceding files you, must then type the following commands atthe Pangea prompt.

1. “nvram set serial xxxxx” where xxxxx is the serial number of the Atlas monitor.2. “nvram write” writes the information to memory.3. “hw reset” performs a hardware reset.

2. Connect the serial cable between the Atlas and the PC COM1 port.

3. Open HyperTerminal program on PC.Hyper Terminal Settings are:

9600 Baud, 8 bit word, 1 stop bitno parity, no flow controlANSI character setFind HyperTerminal in Windows7 95 or higherStart !Programs ! Accessories ! Communication ! HyperTerminal

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Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 29

4. Turn Atlas on. You should see the Pangea prompt. See example in Figure 2-7.

Figure 2-7. Pangea prompt in HyperTerminal.

5. Scroll over to “Transfer” and then scroll down and choose “Send Text File”. See example in Figure 2-8.

Figure 2-8. Choosing “Send Text File” in HyperTerminal.

6. Another window will then appear and prompt you for the location of the files. Doubleleft click on that folder to open that directory. You can also run these programs from theCD. See example in Figure 2-9.

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30 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 2 Service

Figure 2-9. Choosing directory where NVRAM files are stored.

7. Once the folder is open, open the file “nvram_cal_init.txt” file by double left clicking onthat file or by high lighting the file and then click on the Open button. See example inFigure 2-10.

Figure 2-10. Choosing the nvram_cal_init.txt file.

Remember that after you have download the files in this section and you must complete this entire “Downloading NVRAM files” section, that you must perform a complete calibration on the Atlas monitor.

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NOTE: After the nvram_cal_init.txt has executed you should see a Pangea screen similar to window as shown in Figure 2-11.

Figure 2-11. Pangea screen after opening the nvram_cal_init.txt file.

8. From your pangea window choose Transfer then choose Send Text File.

9. Open the directory where the file nvram_common.txt is located or open from the CD.

10.Double left click on nvram_comm.txt file or highlight the file and then choose Open.

NOTE: After opening the nvram_common.txt file you should see a screen similar to the window shown in Figure 2-12.

Figure 2-12. Pangea screen after opening the nvram_common.txt file.

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Section 2 Service

NOTE: Next you will download the model# of the Atlas by choosing only one of the three following files.

1. If you have an Atlas model 621 then you will only download the file nvram200.txt.2. If you have an Atlas model 622 then you will only download the file nvram210.txt. 3. If you have an Atlas model 623 then you will only download the file nvram220.txt.

11.Open the directory where the model number files are located or open from CD.

12.Open the file by double left clicking on the file that represents the model number of theAtlas you are working on or highlight that file then choosing Open.

NOTE: After opening the Atlas model# file you should see a Pangea screen similar to the window as shown in Figure 2-13.

Figure 2-13. Pangea prompt after opening the model# file.

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NOTE: Next you will download the language(s) that you want the Atlas to store in it’s Advanced Configuration menu for languages. You can have one or all the languages loaded in the Atlas. Listed in Table 2-4 are the language(s) choices and the files you will need to download to have the language(s) loaded in the Atlas. Each language you want loaded in the Atlas will require that the file associated with that language be loaded.

Table 2-4. Files needed to download language(s).

13.Open the directory where the language files are located or open from CD.

14.Double left click on language.txt file or highlight the file and then choose Open.

NOTE: After you download a language.txt file you should see a Pangea screen similar to Figure 2-14.

Figure 2-14. Pangea screen after loading a language file.

Language File needed to download

English nvram_english.txt

French nvram_french,txt

Spanish nvram_spanish.txt

German nvram_german.txt

Portuguese nvram_portuguese.txt

Italian nvram_italian.txt

Chinese nvram_chinese.txt

Japanese nvram_japanese.txt

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Section 2 Service

NOTE: Next you tell the Atlas if it does or does not have a printer.1. If the Atlas has a printer you will download the file nvram_printer.txt.2. If the Atlas does not have a printer then you will download the file nvram_no_printer.txt.

15.Open the directory where the printer.txt files are located or open from CD.

16.Double left click on the printer file or the no_printer file or highlight the printer file or the no_printer file and then choose Open.

NOTE: After you have downloaded the printer or no_printer file you should see a Pangea screen similar to the window as shown in Figure 2-15.

Figure 2-15. Pangea screen after downloading the nvram_printer.txt file.

NOTE: The next three commands will require that you actually type the command at the Pangea prompt.

NOTE: XXXXX on line 17 is the Atlas 5 digit serial number. The serial number is located on the bottom of the Atlas. Make sure that you have a space between the command serial and the five numbers you are entering.

17.At the Pangea prompt type the following command “nvram set serial XXXXX”<ENTER>

NOTE: After you have typed the nvram set serial XXXXX command and hit ENTER you should see a Pangea screen similar to the example in Figure 2-16.

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Figure 2-16. Pangea screen after you have downloaded the nvram set serial command.

NOTE: To finish downloading the NVRAM files, type the next two commands at the Pangea prompt.

18.At the Pangea prompt type the command nvram write <ENTER>.

19.At the Pangea prompt type the command hw reset <ENTER>.

NOTE: The hw reset command will reboot the Atlas.

NOTE: The firmware is not up grade able on the OEM boards (SpO2 and CO2) boards. If a higher version software is needed, then you will need to replace the OEM board.

Remember that after you have download the files in this section and you must complete this entire “Downloading NVRAM files” section, that you must perform a complete calibration on the Atlas monitor.

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Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 37

NOTE: Review customer complaint and determine if it is safe to plug in the Atlas monitor into AC power and if it is safe to turn on!

Power on Self Test1. Plug in Atlas into AC power with no sensors attached. Verify that the AC~ LED indictor

is lit. Install paper in printer if fitted.

2. Turn on power and verify the following:1. Green light in power button.2. Loud beep when Power On button pressed.3. Three dashes in SYSTOLIC.4. Three dashes in DIASTOLIC.5. Two dashes in SpO2 (takes several seconds after BP dashes come on).6. Three dashes in PULSE (takes several seconds after BP dashes come on).7. Single bar at the bottom of Plethysmograph.8. No lights in TEMP.9. No lights in ALARMS OFF buttons.10. X lit on AUTO.11. CRT display may comes on slowly if cold or quickly if still warm from last use.12. May see version string in center if comes on quickly. It is not a problem if not seen because it comes on slowly.

3. On the CRT you should see:1. Three dashes for Heart Rate2. Heart symbol3. Lead select symbol4. Scale bar5. One or two lines of dashes for waveforms – depends upon settings.6. Three dashes for MAP – or blank, depending upon settings.7. Error message(s) at bottom of screen?

4. On models 622 or 623, disconnect AC cable. You should see no change except theAC~ LED indicator will not be lit. If you see warnings of a low, very low or depletedbattery, or if the system turns off by it’s self, plug the Atlas back into the AC outlet andlet the unit charge with unit turned off. Repeat test in 2 hours.

5. Plug the monitor back into AC.

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Section 3 Troubleshooting

Menu Functional Test1. Press DATE/TIME button to enter menu page. Press TREND button to access the

Advanced Configuration menu.

2. Write down all configuration settings so that they can be reset to customer preferenceslater. If you have a printer press the PRINTER button to print out customer configurationsettings.

3. Set language to your native tongue if necessary to allow you to write down the othersettings. The top item is always the language, press either SET buttons to step throughlist.

4. Press TREND button to return to idle screen. Press DATE/TIME button and verify thatdate and time are correct. Set date and time if necessary.

NOTE: An incorrect date may indicate a battery problem. If date was incorrect, turn off unit, disconnect AC power cable, wait 5 minutes then reconnect the power cable. Turn Atlas on. Check date again. If date comes back incorrect on model 621 then replace main board. On model 622 and 623, if battery was not dead then replace main board.

5. Press DATE/TIME button to return to waveform screen if needed.

6. Press DATE/TIME button then press LEAD SELECT button to access service mode

7. Version/configuration data is in lower half of menu, write it all down.

8. Press SELECT button to highlight reset to factory defaults.

9. Press BP START/CANCEL button to reset configuration.

10. Press TREND button to return to idle screen.

11. Press DATE/TIME button then press TREND button to access the Advanced Configuration menu.

12. Set language to your native tongue if necessary

NOTE: We have just reset the monitor to factory defaults. Compare settings to factorydefaults appropriate for the country in Operator manual. If the factory defaults do notmatch then that may indicate a memory problem. Changing only the language should not change any of the other factory default settings.

13. Press DATE/TIME button then press LEAD SELECT button to access service mode.

14. Press SELECT button to highlight CRT test pattern.

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15. Press BP START/CANCEL button to show test pattern. Examine display. Press any key toend display.

16. Press Select button to highlight Printer test pattern (if fitted). Press BP START/CANCELbutton to start test pattern. Printer should print a test pattern. Press any key to end display. Examine printout.

17. Press SELECT button to highlight LED test. Press AUTO button to turn on all LEDs.Press BP START/CANCEL button to show automatic test pattern. Watch for a while,look for glitches in pattern. Press SET button to go to manual mode and step through individual segments if needed to observe a problem.

18. Press SELECT button to highlight Button test. Press BP START/CANCEL button to start test. Press every button on system, press BP START/CANCEL button last. Verify that buttons match up with their names and that all buttons are functional.

NOTE: If name does not correspond to the button pushed then this may indicate memory corruption. You may need to replace the main board.

19. Press SELECT button to highlight Display A/D channels. Press SET button and writedown all values for each of the four screens for later review. Press TREND button toreturn to Idle screen.

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Section 3 Troubleshooting

BP Test1. Press DATE/TIME button then press TREND button to access the Advanced

Configuration menu. Press SELECT button to highlight Initial pressure. Press SET buttonto change Initial pressure to 280 mmHg. Press SELECT button to highlight MAP. PressSET button to change MAP to Yes. Press TREND button to return to idle screen.

2. Connect the BP port to the BP simulator. Set the simulator for a normal reading(140/80, 100BPM, NSR). Press BP START/CANCEL button. Atlas should start topump and display a manometer value in SYSTOLIC LED. This value should trackand be very close to pressure displayed by manometer on BP simulator (if fitted).Largest number shown in SYSTOLIC LED should be very close to the initial pressure setting recorded above from Advanced Configuration. System should start steppingdown pressure, showing step values in SYSTOLIC LED display. It then should displaythe correct SYSTOLIC and DIASTOLIC values. System may show MAP value dependingupon country language setting.

3. Press BP START/CANCEL button. System should start pump, display manometervalue in SYSTOLIC LED. This value should track and be very close to pressuredisplayed by manometer in BP simulator (if fitted). Largest number shown inSYSTOLIC should be very close to the Initial pressure setting of 280 mmHg. Ifpressure shown exceeds 300 mmHg then re calibrate the Atlas BP.

4. System should start to step down pressure, showing step values in SYSTOLIC LED andthen display correct SYSTOLIC and DIASTOLIC values. System should show MAPvalue. MAP value should match what is shown by simulator.

5. Set simulator to (120/70, 60 (beats per minute)bpm, NSR).

6. Press the AUTO button. The X manual BP cycle indicator will go out and the 1 minuteauto BP cycle indicator will flash for 10 seconds. 20 seconds after the 1 minute auto BPcycle indicator stops flashing, BP measurement starts.

7. Verify the BP reading. If BP measurement incorrect recalibrate.

8. No less than 30 seconds after completing the measurement another measurementshould start. While it is pumping up, press the BP START/CANCEL button.Measurement should stop immediately and pressure should be dumped (as seen onthe simulator manometer).

9. Press AUTO button and X manual BP cycle indicator should light (not flashing).

10. Disconnect the tubing from the BP port on the Atlas. Press BP START/CANCELbutton and note the time (to the second) when the Atlas aborts the BP cycle and givesyou an alarm. It should take no longer than 1 minute. Turn Atlas off.

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Static Manometer Accuracy TestRequired materials.

1. Serial interface cable 2. PC with HyperTerminal (Windows 95 or above)3. 500cc vessel with inflation system. 4. Calibrated manometer

1. Turn computer on and activate Hyper terminal.Hyper Terminal Settings are:9600 Baud, 8 bit word, 1 stop bitno parity, no flow controlANSI character setStart !Programs ! Accessories ! Communication ! HyperTerminal

2. Turn Atlas on. Refer to Figure 2.1 in Section 2 for inflation setup.

3. Enter the following commands at the PANGEA> prompt.PANGEA> bp safety off <ENTER>PANGEA> bp valve close <ENTER>

4. Pressurize the Atlas monitor to the applied pressures in Table 3-1.

5. To compare the applied pressure to the transducer readings use the following command.PANGEA> bp press <ENTER>

6. Verify that the primary transducer and secondary transducer are within the specifications listed in Table 3-1.

NOTE: The Atlas monitor will return a response to the computer screen as follows.If you tested at the 50mmHg pressure you would receive a message similar to: px = 5279,sx = 5305 x 0.01. Where px is the primary transducer and 5279 = 52.79 mmHg and sx is the secondary transducer and 5305 = 53.05 mmHg.

Table 3-1. Transducer pressure table.

Applied Pressure

Primary Transducer

Safety Transducer

0 mmHg "0.75 mmHg "1.0 mmHg

50 mmHg "1.5 mmHg "1.5 mmHg

150 mmHg "1.5 mmHg "4.5 mmHg

250 mmHg "1.5 mmHg "7.5 mmHg

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Section 3 Troubleshooting

BP Leak Test NOTE: Unit must not leak more than 5 mmHg in a 15 second interval while attached to a 100cc test cavity pressurized at 50 mmHg, 150 mmHg and 250 mmHg.

Required Materials: 100cc test vessel (+10cc/-0cc), stopwatch, squeeze bulb, calibrated manometer.

1. Connect Atlas to 100cc test vessel and calibrated manometer as shown in Section 2,Figure 2.1.

2. Turn Atlas on.

3. Press DATE/TIME button then press LEAD SELECT button to access the Service Mode.

4. Press SELECT button and choose Verify manometer.

5. Pressurize the Atlas with squeeze bulb to 50mmHg and allow reading to stabilize.

6. Observe pressure for 15 seconds.

6. Unit should not leak more than 5mmHg during this time.

7. Repeat this process at 150mmHg and 200mmHg.

Over 15 mmHg TestNOTE: Atlas hardware must detect if the pneumatic system has been pressurized greater than 15 mmHg for more than 155 seconds but less than 180 seconds.

Required Materials: 500cc test vessel (+10cc/-0cc), stopwatch, squeeze bulb, calibrated manometer.

1. Connect Atlas to 500cc test vessel and calibrated manometer as shown in Section 2,Figure 2.1.

2. Turn Atlas on. Press DATE/TIME button then press LEAD SELECT button to access theService Mode. Press SELECT button and choose Verify manometer.

3. Pressurize the Atlas with squeeze bulb to any pressure above 15 mmHg and maintainthat pressure during the test. Start the stop watch.

4. Verify that the valve opens and pressure drops between 155 seconds and 180 seconds.

5. Turn Atlas off.

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BP Dump Verification Test1. Connect the Atlas to a 500 cc vessel as shown in Section 2, Figure 2.1.

2. Turn Atlas on.

3. Press DATE/TIME button then press LEAD SELECT button to access the Service Mode.

4. Select Verify manometer.

5. Pressurize the Atlas to just over 260 mmHg.

6. Allow reading to stabilize for 15 seconds.

7. Ensure the reading is still over 260 mmHg.

8. Start the stop watch when you press the SELECT button. When the SELECT button ispressed the Atlas will start a pressure dump.

9. Verify that the pressure drops to below 15 mmHg within 10 seconds.

Hardware Fail Safe TestsNOTE: Atlas hardware must detect over pressure on unit pneumatic system between 296.0 mmHg and 330.0 mmHg.

1. Connect the Atlas for testing as shown in Section 2, Figure 2.1

2. Turn Atlas on.

3. Press CLOCK/DATE button then press LEAD SELECT button to access Service Mode.

4. Press SET button to highlight the Manometer.

5. Pump system up and record at what pressure the Atlas dumps.

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Section 3 Troubleshooting

ECG/Respiration Test

NOTE: Simulator should support ECG impedance respiration.

1. Cycle power on Atlas, connect a 5 lead ECG cable set to the simulator. Configure thesimulator for NSR, 100 bpm and set the impedance respiration rate to 20.

2. Press DATE/TIME button then press TREND button to access Advanced Configurationmenu.

3. Press SELECT button to highlight ECG lead set and press SET button to select 5 wire.

4. Set ECG gain to Automatic, ECG speed to 25mm/s, ECG bandwidth to Monitor, Secondtrace selection to ECG.

5. Press TREND button to return to idle screen.

6. Verify you see: 1. ECG cascading onto second line 2. Scale bar on top left of CRT 3. Heart rate displayed as set on simulator 4. Lead Selected = II 5. Pulse tone high pitched

7. Press LEAD SELECT button and step through each of the lead settings.(I,II,III,aVR,aVL,aVF,V)

8. Verify that you see a different ECG waveforms for each lead selected. Heart Rate will go to dashes and alarms on some leads.

9. Set lead selected to II.

10. Press DATE/TIME button then press TREND button to access Advanced Configurationmenu.

11. Change Second trace selection to Respiration. Press TREND button to return to idlescreen.

12. Verify that you see:1. ECG on top line2. Scale bar on left of top line3. Heart rate displayed as set on simulator

4. Lead Selected = II5. Pulse tone high pitched6. Respiration trace on second line and rate as set on simulator7. Respiration rate displayed on CRT as set on simulator.

13. Disconnect ECG simulator.

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SpO2 Test

1. Turn SpO2 alarms on.

2. Connect SpO2 cable to simulator.

3. Set simulator pulse rate to 60 beats/minute and verify that pulse rate is 60 ±3 beats/minute or 3%, whichever is greater.

4. Set SpO2 between 70% and 100% and verify that SpO2 is accurate ±2 digits.

Temperature Test1. Without anything connected to the temperature connector on the Atlas, verify that the

temperature LED is blank.

2. Using Table 3-2 below, connect the resistors to a 1/4 inch male mono plug and verifytemperature readings.

Table 3-2 Resistor and temperature reference.

3. Connect the temperature probe to the Atlas monitor. You should see the display readroom ambient temperature. Disconnect the probe and verify you see dashes is the display and that there are no alarms.

CO2 Functional Test

1. Press DATE/TIME button then press TREND button to access Advanced Configurationmenu

2. Set Second trace selection to CO2.

3. Press TREND button to return to idle screen.

4. Insert watertrap with tubing attached.

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Section 3 Troubleshooting

5. Verify that you: 1. Hear pump motor start. 2. See solid line waveform on lower trace. 3. See dashes in Respiration Rate. 4. See dashes in mmHg (or % or kPa, as configured).

6. Breathe gently and repeatedly over end of tubing.

7. Verify that you:1. See waveform within seconds of breathing.2. See respiration rate non zero within one minute.3. See CO2 concentration non zero within one minute.

Battery Functional Test1. System must have been plugged in for 24 hours to guarantee that the battery is fully

charged. But, for now we can do a functional test as follows.

2. Press DATE/TIME button then press LEAD SELECT button to access Service Modemenu.

3. Press SELECT button to highlight Battery test.

4. Verify that the menu reports: 1. Battery Low Time XXX 2. Battery Dead Time YYY

NOTE: These are the results from the last battery test. The Battery Low Time is the time in hours and minutes that the battery ran in the last test until the Low Battery alarm started, and the Battery Dead Time is the time from the beginning of the Low Battery Alarm until the system turned itself off when the battery voltage reached the cutoff level.

NOTE: 2:08 means 128 minutes which is the default setting indicating a battery test has never been made before.

5. Write down the Battery Low Time and Battery Dead Time.

6. Unplug AC cord to start battery test.

7. The timers will begin the moment you unplug the AC cord. Leave the system on until itpowers down by itself automatically. Plug Atlas into AC and turn the Atlas on, enter theService Mode menu, select Battery Test again, and write down the new values. Comparethese to the previous values, and to the minimum specification:

1. Battery Low Time = 1 Hour2. Battery Dead Time = 10 Minute minimums

8. Replace the battery if performance falls below specification.

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Printer Functional TestNOTE: Configuration settings for printing are different for text pages than for waveforms.

1. Connect ECG simulator to generate a sample waveform.

2. Press PRINT button and look at waveform printout. Look for darkness, thickness oflines, legibility of text, blurring, “blooming” of text.

3. If waveform or printed text needs to be darker or lighter, go to Section 2, page 10 forprinter calibration.

Print on Alarm Test1. Turn the Atlas on.

2. Press the DATE/TIME button then press the TREND button to access Advanced Configuration menu. Press the SELECT button and scroll down to Print on Alarm. Pressthe SET button and set Print on alarm to No.

3. Connect an ECG simulator to the Atlas. Set the ECG rate on the simulator to 60 bpm,normal sinus rhythm.

4. Press left SELECT button and the HI heart rate alarm parameter will flash. Set the highheart rate alarm to 110 bpm on the Atlas and press the SELECT button again and the lowheart parameter will flash. Press SELECT button one more time to return to the defaultscreen.

5. Set the ECG simulator to heart rate to 120 bpm.

6. Verify that you hear the audio alarm and that the printer is not printing.

7. Set the ECG simulator to 60 bpm and make sure that the alarm condition has cleared.

8. Press the DATE/TIME button then press the TREND button to access Advanced Configuration menu. Press the SELECT button and scroll down to Print on Alarm. Pressthe SET button and set Print on alarm to Yes.

9. Set the ECG simulator to 50 bpm.

10.Verify that the printer printed a 15 second strip.

Software/Firmware1. Review versions written down earlier and compare to latest available. Make sure that all

components are compatible with each other. See section 2, page 26, Table 2-3.

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Section 3 Troubleshooting

ECG Alarms Test1. Turn the Atlas on. Verify that you hear the power on tone.

2. Press DATE/TIME button then press TREND button to access Advanced Configurationmenu. Press SELECT button and scroll down to Second Trace. Press SET button and setthe second trace to ECG.

3. Connect ECG simulator to the Atlas. Set the ECG rate on simulator to 60 bpm,normal sinus rhythm.

4. Verify you hear the heart rate beep at a constant high pitch.

5. Press SpO2 - + button “-“ 8 times. Should get quieter and finally silent.

6. Press DATE/TIME button then press PRINT button to save settings.

7. Turn system off and back on.

8. Verify pulse tone is silent even though heart rate is shown.

9. Press SpO2 volume button “+” 8 times. Should get audible tone and then louder.

10. Disconnect ECG cable.

11. Verify you hear audio alarm and see error message “ECG Lead fault” and that you see thethree LED bars flash where the heart rate was on the CRT.

12. Press HR ALARMS Off button.

13. Verify that the audio alarm stops and that the visual alarm on the CRT remains.

14. Press HR ALARMS OFF button. Connect ECG simulator to the Atlas and set simulatorto normal sinus, 60 bpm.

15. Press left SELECT button and the HI heart rate alarm parameter will flash. Set the highheart rate alarm to 55 bpm on the Atlas and press the SELECT button again and the lowheart parameter will flash. Press SELECT button one more time to return to the defaultscreen.

16. Verify that you hear the audio alarm and that you see the numeric value flashing inthe upper right portion of the monitor.

17. Return the high alarm limit to 120 bpm and press SELECT button. Verify theaudio alarm should is silent and the numeric visual alarm is flashing.

18. Press SELECT button twice. Verify the numeric low alarm parameter is flashing.

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19.Set the LOW alarm for 65 bpm by pressing the up SET button. Press SELECTbutton.

20. Verify that you hear the audio alarm and that you see the numeric value is flashing inthe upper right portion of the monitor.

21. Turn the Atlas off.

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Section 3 Troubleshooting

Respiration Alarms Test1. Turn Atlas on.

2. Press DATE/TIME button then press TREND button to access Advanced Configurationmenu. Press SELECT button to scroll down to Second Trace. Press SET button and setsecond trace to respiration. Press TREND button to return to default screen.

3. Set respiration on simulator to 20 respirations/minute and connect to the Atlas.

4. Press left SELECT button three times and set the hi respiration alarm to less than 20.Wait 10 seconds and the CRT will return to the default screen.

5. Verify that you hear the audio alarm and that the respiration numeric value on the CRTis flashing.

6. Press CO2/RESP ALARMS off button.

7. Verify that the audio alarms are silent, the visual numeric alarm is flashing andthat the red LED in the CO2/RESP ALARM off button is lit.

9. Press left SELECT button three times to access hi respiration alarms and set hi alarm to30.

10. Wait ten seconds and the CRT will return to the default screen.

11.Press CO2/RESP ALARM off BUTTON then press left SELECT button four times toaccess low respiration alarms and set low respiration alarms to 25.

12. Wait 10 seconds and CRT will return to the default screen.

13.Verify that you hear the audio alarm and that the respiration numeric value on the CRTis flashing.

14. Press CO2/RESP ALARMS off button.

15.Verify that the audio alarms are silent, the visual numeric alarm is flashing andthat the red LED in the CO2/RESP ALARM off button is lit.

16. Turn Atlas off.

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SpO2 Alarm Test

1. Turn Atlas on.

2. Attach SpO2 to a simulator and set for 95% SpO2.

3. Verify that you hear a pulse rate beep and that it is a different pitched tone than theECG pulse beep.

4. Change SpO2% setting on the simulator. Verify that tone changes pitch up or downtracking simulator setting.

5. Press lower far right SELECT button until SpO2 LO is flashing, press right SET buttonUP to change SpO2 LO setting to 99.

6. Wait until the SpO2 LO LED stops flashing.

7. Verify that you hear the SpO2 LO limit alarm.

8. Press Alarm Volume button “-“ eight times. Verify tones gets quieter but not silent.

9. Press Alarm Volume button “+“ eight times. Verify the tone gets louder.

10.Disconnect SpO2 cable from simulator and verify that the visual alarm “SpO2 cablenot detected” is displayed on the bottom left side of CRT. Verify that you hear theaudio alarm.

11.Press SpO2 ALARMS Off button.

12.Verify that the audio alarm sound is silent, that you do not see the visual alarm message “SpO2 cable not detected” on the CRT and that the LED in the SpO2 ALARMS OFF button is on.

13.Turn Atlas off.

14.Disconnect SpO2 cable from Atlas.

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Section 3 Troubleshooting

Silence Alarm Test1. Turn Atlas on.

2. Press DATE/TIME button then press TREND button to access Advanced Configuration menu. Press SELECT button until Silence Duration is highlighted. Press SET button until 90 seconds is highlighted. Press TREND button to go todefault screen.

3. Connect ECG simulator to the Atlas. Set the ECG rate on simulator to 60 bpm, normalsinus wave.

4. Press left SELECT button once and set the HI alarm to 55 bpm.

5. Wait until you hear the audio alarm.

6. Press SILENCE button and start stopwatch. Verify that the alarm returns at 90seconds.

7. Turn Atlas off.

CO2/RESP Test

1. Turn Atlas on.

2. Press DATE/TIME button then press TREND button to access the Advanced Configuration menu.

3. Set Second trace selection to CO2. 4. Press TREND button to return to idle.

5. Insert CO2 watertrap with hose.

6. Breath into hose until a waveform is displayed.

7. Remove CO2 watertrap .

8. Verify you hear the audio alarm and that you see in the visual alarm “ CO2 watertrap notdetected” in the bottom left portion of CRT.

9. Press the “ CO2/RESP ALARMS off ” button. Verify that the audio alarm goes silent, thevisual alarm goes out and the red LED in the CO2/RESP ALARMS off button is lit.

10.Turn Atlas off.

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Blood Pressure Alarm Test1. Turn Atlas on.

2. With no hose connected to the BP port, press BP Start/Cancel button.

3. Place finger over BP port. This will block the flow causing the Atlas to detect an overpressure.

4. Verify that you hear the audio alarm, that the visual alarm “ Check Blood Pressure Cuff “appears in the lower left portion of the CRT and that the SYSTOLIC and DIASTOLICLED displays are flashing.

5. Press the BP ALARMS OFF button.

6. Verify the audio alarm is silent, the visual alarms have turned off and that the red LED inthe BP ALARMS OFF button is lit.

7. Press the BP ALARMS OFF button then press the BP START/CANCEL button twice.

8. Press BP START/CANCEL button and let Atlas run without anything attached to the BPport.

9. Verify at 60 seconds that you hear the audio alarm and that the visual alarm “ Check Blood Pressure Cuff “ appears in the lower left portion of the CRT and that the SYSOLIC

and DIASTOLIC LED displays are flashing.

10.Press the BP ALARMS OFF button.

11.Verify the audio alarm is silent, the visual alarms are still off and that the red LED inthe BP ALARMS OFF button is lit.

12.Press the BP ALARMS OFF button then press the BP START/CANCEL button twice.

13.Connect a BP simulator to the Atlas BP port. Set the simulator for a normal reading (140/80, 100 bpm, normal sinus rythym).

14.Press the right SELECT button twice and the current SYSTOLIC HI alarm value will beflashing.

15.Press the SET button to set SYSTOLIC HI alarm to 130.

16.Press BP START/CANCEL button.

17.Verify that you hear the audio alarm and that the numeric value in the SYSTOLIC LEDdisplay is flashing.

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54 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 3 Troubleshooting

18.Press the BP ALARMS OFF button.

19.Verify the audio alarm is silent, the numeric value in the SYSTOLIC LED display is stillflashing and that the red LED in the BP ALARMS OFF button is lit.

20.Reset the SYSTOLIC HI alarm to 200 (factory default). Press BP ALARMS OFF button.

21.Press the right SELECT button three times and the numeric value in the SYSTOLIC LOalarm LED display will be flashing.

22.Press the SET button to set the SYSTOLIC BP LO alarm to 160.

23.Press BP START/CANCEL button.

24.Verify that you hear the audio alarm and that the numeric value in the SYSTOLIC LEDdisplay is flashing.

25.Press the BP ALARMS OFF button.

26.Verify the audio alarm is silent, the numeric value in the SYSTOLIC LED display is stillflashing and that the red LED in the BP ALARMS OFF button is lit.

27. Reset SYSTOLIC LO alarm to 70 (Factory default). Press BP ALARMS OFF button.

28.Press right SELECT button four times and the numeric value in DIASTOLIC HI alarm LED display will be flashing.

29.Press the SET button and set DIASTOLIC HI alarm to 70.

30.Press BP START/CANCEL button.

31.Verify that you hear the audio alarm and that the numeric value in the DIASTOLIC HILED display is flashing.

32.Press the BP ALARMS OFF button.

33.Verify the audio alarm is silent, the numeric value in the DIASTOLIC LED display is stillflashing and that the red LED in the BP ALARMS OFF button is lit.

34.Reset DIASTOLIC hi alarm to 155 (Factory Default). 35.Press right SET button five times and the numeric value in the DIASTOLIC LO alarm

LED display will be flashing.

36.Press SET button and set DIASTOLIC LO alarm to 90. Press BP ALARMS OFF button.

37.Press BP START/CANCEL button.

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Troubleshooting Section 3

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 55

38. Verify that you hear the audio alarm and that the numeric value in DIASTOLIC LED display is flashing.

39. Press the BP ALARMS OFF button.

40. Verify the audio alarm is silent, the numeric value in the DIASTOLIC display is still flashing and that the red LED in the BP ALARMS BUTTON is lit.

41. Reset DIASTOLIC LO alarm to 50 (Factory Default). 42. Turn Atlas off.

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56 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 3 Troubleshooting

Table 3-3. Atlas trouble shooting.

Failures Possible Solutions

Power on:

Unit does not power up, no AC on LED, no Power on LED.

1 Check AC power cord.

2 Verify connection from power supply to main board.

3 Verify +12V output from power supply.

4 Replace Power Supply.

5 Check Cable from main board to display board.

6 Replace Display board.

Unit does not power up - AC and Power on LED on.

1 Check that the CPU board is fully seated.

2 Replace CPU board.

3 Check for conformal coating in J4 header - replace board if coating is found.

4 Replace Main board.

5 Replace Display board.

Unit powers up intermittently or Power button sticks or cannot duplicate power on problem But unit passes burn in.

1 Remove flashing on Bezel at power button.

2 Check for severely tipped power button LED on display board.

Unit powers up - but no image on CRT. 1 Check for conformal coating in J4 header - replace board if coating is found.

2 Replace CPU board.

3 Check for correct installation of connection from main board to deflection board. If installed with pin 1 in the pin 2 socket deflection board will be damaged. If installed with pin 1 out of socket deflection board will be OK.

4 Replace CPU assembly.

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Troubleshooting Section 3

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 57

Table 3-4. Atlas trouble shooting.

Failures Possible Solutions

Display:

Segment out, LED out, Buttons do not work.

1 Replace Display board.

All or most segments stay on at power up.

1 Replace CPU board.

2 Check cable from Display board to Main board.

3 Replace Power Supply.

CRT:

CRT image rotated or poor alignment. 1 Rotate yoke and/or adjust magnets.

Only see a dot in the center of the screen.

1 Check cable from yoke to CRT board.

Only see a horizontal line in the center of the screen.

1 Check cable from yoke to CRT board.

2 Replace Deflection board.

No image - CRT to Main board connection OK.

1 Check flex-cable from Deflection board to tube.

2 Check high voltage anode connection.

3 Replace Deflection board.

4 Replace tube.

5 Replace CPU board.

No image - Glow at bottom of screen. 1 Check for conformal coating in J4 header - replace board if coating is found.

2 Replace CPU board.

Dark vertical scan lines in image. 1 Replace CPU board.

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58 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 3 Troubleshooting

Table 3-5. Atlas trouble shooting.

Failures Possible Solutions

Printer:

Motor does not run. 1 Check that the unit is configured for printer. (CRT image will freeze for 10 seconds if configured for no printer.)

2 Check cable from printer PCB to motor.

3 Check cable from printer PCB to Main board.

4 Check motor gear alignment to first plastic gear.

5 Check for paper jam.

6 Replace printer PCB.

7 Replace CPU.

Motor runs or chatters - paper does not advance.

1 Check for missing dowel pin in roller.

2 Check for missing bearings/gears.

3 Replace printer PCB.

4 Replace CPU.

Light print or no print. 1 Check that paper is properly installed (thermal side visible).

2 Check cable from printer PCB to print head.

3 Check printer-strobe-width in NVRAM (could indicate error in printer thermistor circuit). If low, check printer PCB, Main board, and CPU board.

4 Check mechanical assembly for proper force of printhead on paper.

Prints gibberish. 1 Reseat CPU board.

2 Replace CPU board.

3 Replace Printer to Main board cable.

4 Replace printer PCB.

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Troubleshooting Section 3

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 59

Table 3-6. Atlas trouble shooting.

Failures Possible Solutions

Safety:

Earth resistance over limit. 1 Check ground wire from motor to power supply can.

2 Tighten screws that attach ground tabs to power supply can.

3 Tighten screws holding power supply PCB to can.

4 Tighten quick connects on AC harness to power supply.

5 Replace power supply PCB.

Blood Pressure:

Leak test - Fails Leak Specification 1 Run individual test. If unit passes repeat all tests.

2 Check seals @ tubing in BP assembly.

3 Check for lifted pins on the CPU connector JP8.

4 Replace Check valve.

Leak test - ‘Can’t pump beyond xxx.xx’. 1 Verify unit can pump beyond 300 mmHg then: Retest.

2 If pump will not reach 300 mmHg, then:A. Check for correct direction on check valve.B. Check for possible leaks.C. Check for pinched tubing.D. Replace pump.

Manometer Accuracy - ‘Can’t pump beyond xxx.xx’.

1 Verify unit can pump beyond 300 mmHg then: Retest.

2 If pump will not reach 300 mmHg, then:A. Check for correct direction on check valve.B. Check for possible leaks.C. Check for pinched tubing.D. Replace pump.

3 Check for lifted pins on the CPU connector JP8.

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60 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 3 Troubleshooting

Table 3-7. Atlas trouble shooting.

Failures Possible Solutions

Manometer Accuracy - Fails Accuracy Specification.

1 Replace Main board. Faulty transducer or amp.

Deflation Profile. 1 Replace dump valve.

2 Replace Main board. Valve drive circuitry fault.

Overpressure Limit - ‘Can’t pump beyond xxx.xx’.

1 Verify unit can pump beyond 300 mmHg then: Retest.

2 If pump will not reach 300 mmHg then:A. Check for correct direction on check valve.B. Check for possible leaks.C. Check for pinched tubing.D. Replace pump.

Overpressure Limit - Fails Accuracy Specification.

1 Replace Main board. Fault with pressure transducer, amplifier, or comparator.

2 Replace CPU board.

Dwell time. 1 Replace Main board. - Fault with 15 mmHg detect circuit.

2 Replace CPU board. - Fault with timer.

Dwell Pressure. 1 Replace Main board- If fault with 15 mmHg detect circuit.

2 Replace CPU board.

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Troubleshooting Section 3

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 61

Table 3-8. Atlas failure trouble shooting.

Failures Possible Solutions

SpO2:

No Signal - SpO2 fault message on CRT. 1 Plug in finger cuff, connect to your finger & check for function. If function is normal retest. If not continue to step 2.

2 Check cables - SpO2 board to Main board, SpO2 board to Bezel.

3 Replace Main board.

4 Replace SpO2 board.

5 Replace CPU board.

SpO2 signal accuracy. 1 If Nellcor, check ribbon cable and harness. Replace as needed.

2 Replace SpO2 board.

ETCO2:

Specification limits fail - Flow rate or Percentage.

1 Perform calibration. If that does not fix then go to step 2.

2 Replace Pryon board.

ETCO2 failure. 1 Check for broken switch in trap receptacle.

2 Verify board ID in service module.

3 Perform functional test of ETCO2. Verify pump comes on when switch in water trap receptacle is activated. If switch is intermittent replace the receptacle.

4 Replace Pryon board.

5 Replace CPU board.

Temperature:

1 Check connection - main board to temperature jack.

2 Check pins in Temperature harness for correct seating.

3 Replace Main board.

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62 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Section 3 Troubleshooting

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Disassembly and Repair Section 4

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 63

About Section 4

This section is a guide for disassembly and reassembly of the Atlas Monitor. Always refer to current revision schematics, diagrams and final safety test procedures before attempting to service this device.

Do not attempt to service this instrument unless you have received Service Training from Welch Allyn or an authorized Training Agent, and are equipped with approved processes and test equipment. For more information about training call the Welch Allyn Customer Service phone number listed in Section 1 of this manual.

General:The outside housing is removable in order to provide full access to all internal printed cir-cuit boards and other components. Most of these are held in position with the surrounding “E-Pac” foam. E-Pac foam provides shock absorption, ventilation channels, and spaces for the components and boards. Pneumatic tubing and cables must be placed correctly in E-Pac to avoid problems with pinched tubing.

Problems During Service:A Technical Support phone number is listed in Section 1 of this manual to answer questions you may have during the servicing of the Atlas Monitor.

Printer:Print-head, printer motor, and printer roller can be replaced as necessary.

Printed Circuit Boards:There are no component level repairs for the Printed Circuit Boards(PCB). These are replaced if found to be defective. During the warranty period, boards that are found to be defective should be returned to Welch Allyn.

EXERCISE EXTREME CAUTION WHEN SERVICING THE ATLAS MONITOR! THE CRT ASSEMBLY AND CRT DEFLECTION BOARD OPERATE ON APPROXIMATELY 8,000 VOLTS.

CRT:The CRT and CRT Deflection Board are aligned at the factory and as such are replaced as a matched set if one or the other should fail in service.

Electrical Shock Hazard

CAUTION

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Section 4 Disassembly and Repair

64 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

ESD: Circuit Boards are sensitive to static electric-ity. Use wrist straps, ESD mats and ESD storage bags.

1. Battery Door RemovalRemove the two screws holding the bat-tery door. Remove the battery door.

2. Battery RemovalRemove the battery connector from the main PCB. Remove battery.

Model 220 (623NP)

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Disassembly and Repair Section 4

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 65

3. Rear Housing Removal3.1 Remove the four Torx head machine screws. Use a #10 Torx driver.

3.2 Pull the rear housing away from the front panel. Take special care not to dam-age any cables.

3.3 Flip the housing forward. Take special care not to damage any cables.

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Section 4 Disassembly and Repair

66 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

NOTE: Observe how hose fits in E-Pac Foam. The hose fits over wiring keeping wiring secure.

4. Printer cable and Display Cable RemovalRemove both Printer and Display PCB cables from the Main PCB.

5. Power Supply Ground Wire RemovalRemove the two ground connectors from power supply chassis.

PrinterCable

DisplayPCB Cable

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Disassembly and Repair Section 4

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 67

6. Tie Wrap RemovalCut the tie wrap that secures the ground wires to the E-pac foam.

7. CPU RemovalRemove the CPU from the Main PCB.

8. Main PCB RemovalUse a tool T-16654 to pry the main Board away from the Deflection Board. Pull the E-pac tab to the right as you pry. Support the Main PCB while titling it away.

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Section 4 Disassembly and Repair

68 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

9. Main PCB Side Connector Removal.Remove the four connectors(power sup-ply, fan, speakers, BP pump) from the side of the main PCB.

10. Main PCB Hose and Wire Removal.Disconnect hoses and connectors. BP hose, ecg cable, temp cable (modles 622 and 623 only, SpO2 cable, CO2 cable (model 623 only)and ground wire (Nelcor SpO2 only) from main PCB.

NOTE: Notice how hoses and connectors fit on Main PCB.

11. Pump Removal.Remove the pump assembly from the E-Pac foam.

NOTE: Notice how pump fits in E-Pac Foam and how wires are routed out of pump.

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Disassembly and Repair Section 4

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 69

12. CO2 Exhaust Removal.

Remove the CO2 exhaust cover and remove the CO2 connector from the E-Pac foam.

13. Pryon PCB Removal.Remove connectors from Pryon PCB. Pull Pryon PCB from E-Pac foam.

14. E-Pac Foam Removal (Top).Remove the top E-Pac foam.

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Section 4 Disassembly and Repair

70 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

15. Power Supply Removal.Slide the power supply out from the E-Pac Foam.

16. Power Supply Fuse LocationNOTE: Notice power supply and power supply fuse location.

17. Fan RemovalSlide fan out from E-Pac foam.

Fuse

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Disassembly and Repair Section 4

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 71

18. E-Pac Removal (Lower)Remove lower E-Pac foam from unit.

19. Deflection PCB RemovalCarefully remove the small deflection PCB from the CRT.

20. CRT RemovalRemove the two machine screws holding CRT to the front panel.

NOTE: Notice how the ground wire is attached and is located along the side of CRT.

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Section 4 Disassembly and Repair

72 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

NOTE: The CRT and deflection PCB are factory tuned as a unit and are sold only together as a unit.

21. Display PCB RemovalRemove all 9 self tapping screws that hold the Display PCB to the Bezel.

NOTE: Notice the correct orientation of CRT screw and washer.

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Disassembly and Repair Section 4

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 73

22. Printer Door Button RemovalUse a small screwdriver to push the door button tab up and away from the pin that locks it onto the printer frame.

NOTE: Notice how the printer button is being removed.

.

23. Printer Assembly Locking Tab Release.Pull the locking tab down and towards the front of the rear housing assembly.

Locking Tab

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Section 4 Disassembly and Repair

74 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

24. Printer Positioning Slot RemovalMake sure printer door is open. Begin to pull the positioning slots towards the front of the rear housing and then out from the rear housing.

25. Printer Assembly Removal.After printer positioning slots have cleared the front rear housing, pull the printer down and out of the rear housing.

26. Printer Lip Assembly.

Observe how the printer assembly fits into the lip of the rear housing.

PositioningSlots

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Disassembly and Repair Section 4

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 75

27. Printer Cable Routing.

Observe how the printer cable lies over the printer PCB.

Page 86: Atlas Patient Monitor - Henry Schein
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Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 77

Power Supply Circuits

Model 621Atlas Model 621 uses a 50W, medical grade, offline switcher which provides 12VDC from a universal AC input (85VAC to 264VAC – 50/60Hz). The model 621 can only be powered from external AC.

The following supplies are generated on the Atlas Main Board:+12V DC CRT, input to isolated power supply, misc. analog circuits.6V DC NIBP Pump and Valve, input to 5V and 3V regulators (5.7V nom).+5V DC Front panel LED’s, misc. logic.+3.3V DC CPU board.Vbackup: On/Off circuits.

Note: Additional electrically isolated supplies are generated for patient connected circuits.

Figure A-1. Model 621 DC/DC circuit block diagram.

On/Off Circuits – Backup Regulator and Micro-ControllerA 3.3V regulator, U304, provides power to the On/Off circuits. This voltage is diode OR’d (D304) with the lithium backup battery to provide power to the real time clock on the CPU board. The On/Off circuitry is controlled by the micro controller U305. This controller per-forms the following functions:

AC Present

AC/DCConverter

5.7V BuckConverter

BackupRegulator

+6V

+3.3V

LithiumBattery

+5VDCRegulator

+12V

On/Off

Vbackup

Model 621DC/DC CircuitsBlock Diagram

AC+12V

+5V

On/OffControlCircuits

+3.3VDCRegulator

Vb

Q301

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78 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

1. Monitors the status of the front panel ON-OFF key. If the unit is off and the ON-OFF key is pressed, the controller will drive U10-6 high, which will enable power to the remainder of the instrument.

2. At power up, the micro controller will drive the beeper for about 1 second.

3. At power up, the micro controller will reset Shift Register U2. This will cause the follow-ing:

a. The front panel LED's are blanked. b. The NIBP pump drive is placed in the off state.

4. When the unit is ON the micro controller will communicate with the system CPU. When the front panel ON-OFF key is pressed, the CPU will store away current operating condi-tions, then issues a command to the micro controller to shut instrument power off. U10-6 is driven low which will remove power from the remainder of the instrument.

The instrument is powered on as follows: U305-6 is driven high, which turns transistor Q302 on (output low) Q301 (P-channel MOSFET) ON when the gate is pulled low, then +12V active. Q306 is turned off, allowing the 5.7V buck converter to power on. As 5.7V becomes active, the 5V and 3.3V supplies also become active.

Figure A-2. On/Off Control Circuits.

Buck ConverterA buck converter is used to generate 6V from the 12VDC output of the offline switcher. The UC3843A (U301), normally a current mode controller, is configured for voltage mode feed-back. The UC3843A has an under-voltage lockout for Vcc<8.5V. The controller operates such that with Vcc less than 8.5V, the reference out is 0V, and will be at 5V with Vcc>8.5V.

Vb

D

Q301

MTP23P06V

2

1

34

U305

D620361-MX10000

2

5

7

4

3

6

1 14

8

9

10

11

12

13ClkIn/Osc1/RB5

TC5/TOCK1

RC3

Vpp/MCLR/RB3

Clkout/Osc2/RB4

RC4

Vdd

Vss

RC2

RC1

RC0

RB2

RB1

RB0

+C3011000uF

R30151.1K

Q302-B

On/Off Switch

VBackup

Speaker-Audio

D

R316100

+ C304330uF

D

+C3281uF

D

Q30

1-G

filt+12V

SwitcherShutdown

+ C3234.7uF

+ C3244.7uF

Lithium

d304-1

R3201.62K

Q3062N7002

3

1

2

BackupBattery

R302100K

On/Off-Key

C303.01uF

D

R314100

U301-comp

R30310K

R31810K

C305.01uF

C325.047uF

U2-Reset

+12V

d304-2

D304MMBD354LT1

1

3

2

PIC-Clk

Q302MMBT3904L

3

1

2

AC+12V

U304

LP2951CD-3.3

873

62

15

4

VINFDBKSHTDN

TAPSENS

VOUTERR

GN

D

On-Off

C322.047uF

PIC-Data

L30147uH

PIC-audio

+ C3021uF

u304-fb

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Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 79

Then, the reference out (pin 14) can be used as an AC-ON detection signal. The switching transistor for the buck converter is a P-Channel MOSFET (Q305). The output drive of the controller is the wrong polarity for driving a P-Channel MOSFET in a step down mode. Therefore, transistor Q303 is added to invert the PWM out signal. Fast turn-on of Q305 is provided when Q303 is low, fast turn-off is though Q304 (configured as an emitter follower). The PWM controller includes an internal 2.5V reference. Voltage regulation is controlled with sampling resistor R304 and R305 such that Vout = 2.5V*(1+R304/R305) = 5.68V. At power down pin U301-1 (comp pin) is pulled low. This will cause U301-10 to go low, which turns Q305 off and disables power to +6V.

Figure A-3. Model 621 Buck converter.

5Vref

U301-fb

U301-5

ACON

U30

1-ou

t

Q303MMBT3904L

3

1

2C309.047uF

R3077.5K

+6V Buck(5.68V nominal)

R31110K

LC FilteredAC/DC converteroutput

Q304-e

filt+12V

U301UC3843A

3

57

14

1

10

812

911

VFB

ISENSERT/CT

VREF

COMP

OUT

PW

R-G

ND

Vcc

GN

DV

c

U301-osc

Q305MTP23P06V

2

1

34

C327.047uF

D303

MBRS340

C326.047uF

C313.047uF

Q303-c

U301-comp

C3112200pF

R304127K

C3102200pF

Q305-s

R3121.96K

R30910K

R30610K

R3101.96K

Q305-g

C311-1

Q304MMBT3904L3

1

2

L30247uH

D301BAV99L

1

3

2

+ C314330uF

R31310

R30827.4K

Q30

3-b

+6V

R305100K

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80 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Linear Regulators – 5VDC and 3.3VDCThree terminal linear regulators, U302 and U303, are used to develop regulated 5V and 3V. The regulators are powered by the output of the 6V PWM converter. These regulators do not include a power down mode, but the voltage will collapse as the input voltage shuts down.

Figure A-4. Model 621 linear regulation.

Model 622 and Model 623Atlas Model 622 and 623 can be powered either from AC or battery. A 50W, medical grade, offline switcher provides 12VDC from a universal AC input (85VAC to 264VAC – 50/60Hz). The battery is a rechargeable 6-Volt, 6.5 Amp-Hour, Sealed Lead Acid Battery, and will pro-vide about 1.5 hours on a fully charged battery (Battery Life depends on usage, especially printer usage, NIBP cycles, and CO2 operation).

The unit will operate from AC when the unit is plugged in, and switches to battery opera-tion when AC is removed. The battery is automatically charged whenever AC is connected.

The following supplies are generated on the Atlas Main Board:

+12V DC CRT, CO2, input to isolated power supply, misc. analog circuits.+5V DC Front panel LED’s, misc. logic.+3.3V DC CPU board.3.3V Backup: Real time clock and On/Off circuits.Battery Charger: Charges SLA battery.

Note: Additional electrically isolated supplies are generated for patient connected circuits.

+3.3V

U302LM2940CT-5.0

1 3

2

IN OUT

GN

D

+6V

+ C31610uF

D

C320.047uF

+5V

+ C319100uF

+ C3151uF

D

DDD

D

C317.047uF

D

U303LF33CV

1 3

2

IN OUT

GN

D

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Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 81

Figure A-5. DC/DC circuit diagram.

On/Off Circuits

Backup Regulator and Micro-ControllerA 3.3V low current regulator, U307, provides power to the On/Off circuits and to the real time clock on the CPU board. The On/Off circuitry is controlled by the micro controller U10.

This controller performs the following functions:

1. Monitors the status of the front panel ON-OFF key. If the unit is off and the ON-OFF key is pressed, the controller will drive U10-6 high, which will enable power to the remainder of the instrument.

2. At power up, the micro controller will drive the beeper for about 1 second.

3. At power up, the micro controller will reset Shift Register U2. This will cause the follow-ing: a. The front panel LED's are blanked. b. The NIBP pump drive is placed in the off state.

4. When the unit is powered on the micro controller will communicate with the system CPU. When the front panel ON-OFF key is pressed, the CPU will store away present operat-ing conditions, then issues a command to the micro controller to shut instrument power off. U10-6 is driven low which will remove power from the remainder of the instrument.

+12V

AC Not Present

+5V

+3.3V

On/Off

AC Present

AC+12V

Battery

On/OffControlCircuits

+12VDCRegulator

BatteryCharger

+5VDCRegulator

+3.3VDCRegulator

AC/DCConverter

DC/DC CircuitsBlock Diagram

D310

Q311

Q303

BackupRegulator

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82 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

18V boost converter and FET ON/OFF switchThe PWM controller, U301, is configured as an 18V boost-converter. An N-Channel MOS-FET transistor, Q303, is used to switch power to the 12V regulator. As Q303 is configured as a high side switch, it is necessary to develop a gate voltage of proper magnitude to turn Q303 on. Then, to enable power to the 12V regulator, the following takes place:

1. The micro controller drives U10-6 high, turning transistor Q302 on.

2. Transistor Q301 is switched on, supplying power to the PWM controller, U301.

3. The boost regulator develops 18VDC, which will switch transistor Q303 On.

Figure A-6. Boost converter and off/on switch.

D D

D

D

U301-comp

u307-6

Q301-b

U301-sw

Q302-c

Q302-B

U301-pwr

U301-7

U301-ct

VBackup

AC+12V

Battery

+Vfuse

V

U2-Reset

On/Off-Key

PIC-Data

On/Off

Vbackup

PIC-audio

PIC-Clk

+18V

+ C301330uF

+ C304100uF

HS301

6078

R3051

+C3021uF

Q303MTP30N06VL

2 3

1

4

D301MBR2535CTL

1

324

+ C3324.7uF

U307

LP2951CD-3.3

873

62

15

4

VINFDBKSHTDN

TAPSENS

VOUTERR

GND

Q301MPSW51A

3

2

1

C303470pf

D302BAV99L

1

3

2

R3021.96K

F303

4Amp

U301MC34063AD

53

78

1

26

4

COMPTCAP

IPKIDC

ISWC

ISWEVcc

GN

D

+ C3391uF

R30351.1K

R304100K

Q302MMBT3904L

31

2

+ C3314.7uF

R30110K

R3074.64K

L3011mH

R30661.9K

C42.047uF

U10

D620361-MX10000

2

5

7

4

3

6

1 14

8

9

10

11

12

13ClkIn/Osc1/RB5

TC5/TOCK1

RC3

Vpp/MCLR/RB3

Clkout/Osc2/RB4

RC4

Vdd

Vss

RC2

RC1

RC0

RB2

RB1

RB0

R2210K

On/Off Circuit18V Boost - Mosfet Gate Voltage

On/Off Switch

Heatsinkfor D301

(Front Panel Key)

(pg 1)

(pg 3)

(To U2)

Page 93: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 83

+12V Boost Converter

The +12V boost circuit provides regulated 12VDC. The input to the 12V converter is either battery or 12V from the AC/DC converter. The circuit is configured as a boost PWM using current mode feedback. The PWM controller is a UC3843A. The controller includes an internal 2.5V, 2% reference, and an external 5V, 2% reference. Nominal output voltage for the boost converter is Vout = [2.5V*(1 + 173.8K/4.64K)] = 12.1V.

The UC3843A requires 8.5V minimum to power on. The maximum voltage allowed on the switching transistor, Q305, is 15V. To meet both these requirements, the UC3843A is pow-ered from 12.9V (+18V – 5.1V zener diode D303)

When operating from battery, the converter will run at duty cycles over 50%, which requires slope compensation for a current mode controller. Slope compensation is achieved by summing in part of the oscillator signal (pin 4) with the current sense line.

The PWM controller is current limited on a cycle to cycle basis by monitoring the voltage on the Isense line, U302-5. Current limit is activated when the voltage at the sense line reaches 1V. The nominal DC voltage at Isense is about 0.5V when operating from battery only, and 0.7V when operating from AC. Then, current limit is set to 5Amps when Atlas in operating on battery and 3Amps when operating on AC.

Figure A-7. Boost converter.

Q30

5-s

D304-C

Q30

5-gU302-comp

U302-pwr

U302-fb

U30

2-ou

t

D312-c

C305-1

Q304-e

L302

-1

U302-sense

Q305-d

U302-ct

Q303-s

AC+12V-fuse

+12V

5VRef

+18V

+V

L305Bead

C307.047uF

R315196

D304MBRS340T3

L303Bead

+ C3061uF

D3035.1V

13

U302UC3843A

3

57

14

1

10

812

911

VFB

ISENSERT/CT

VREF

COMP

OUT

PW

R-G

ND

Vcc

GN

DV

c

R3123.83K

R30817.8K

+ C3111000uF

R31110K

C3095600pF

R31410

C3082200pF

+ C3121000uF

R3177.5K

R3131.96K

R31010K

C336.047uF

D312BAV99L

1

3

2

R3160.1

+ C313330uF

+ C3101000uF

R3094.64K

C3055600pF

C335.047uF

Q304MMBT3904L

3

1

2

L30222uH

Q305

MTP30N06VL

23

1

4

+12V Boost(12.1V nominal)

Page 94: Atlas Patient Monitor - Henry Schein

84 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Battery ChargerThe battery charger is a PWM buck converter. The input to the battery charger is 12VDC from the offline switcher. The UC3843A, normally a current mode controller, is configured for voltage mode feedback. The UC3843A has an under-voltage lockout for Vcc<8.5V. The controller operates such that with Vcc less than 8.5V, the reference out is 0V, and will be at 5V with Vcc>8.5V. Then, the reference out (pin 14) can be used as an AC-ON detect signal.

The switching transistor for the buck converter is a P-Channel MOSFET (Q308). The output drive of the controller is the wrong polarity for driving a P-Channel MOSFET in a step down mode. Therefore, transistor Q306 is added to invert the PWM out signal. Fast turn-on of Q308 is provided when Q306 is low, fast turn-off is though Q307 (configured as an emitter follower).

The battery charger is a current limited - temperature compensated charger. Current limit is set to 1.5Amps. Current through the 0.1Ohm sense resistor R327 is measured with Diff-Amp U305B. When the charger current is at 1.5Amps, feedback is controlled by Op-Amp U304A. When the current drops below 1.5Amps, the output of U304A goes low, reverse biasing Diode D308, and feedback will be controlled by Op-amp U304B.

Battery charge voltage is temperature compensated using Thermistor RT301, a 10K negative temperature coefficient resistor. Voltage over temperature follows the following charge pro-file:

Table A-1. Temperature coefficient.

For optimum battery life, the float voltage (25C, full charge) should be set to 6.85V +/- 50mV (6.85V +/- 0.7%). To accomplish this tight tolerance, charge voltage at room temperature will be adjusted with potentiometer R328. Nominal charge voltage at room temperature is:Vcharge = 5V * (1 + RA/RB) where,5V is the reference in U303.RA is the series/parallel combination of R335, R336, and RT301 (nominal 3.465K @ 25C).RB is the series combination of R337and R338 (nominal 936 Ohms)

It is necessary to minimize current out of the battery when the unit is off. To reduce off cur-rent, transistor Q309 disconnects the battery from the battery sense resistors when AC in off. In addition, diode D307 is added to prevent current from flowing from the battery into the battery current sense circuit, and to the output of the AC/DC converter.

Temperature Voltage Thermistor0C 7.05V 26.9K10C 7.0V 20.7K25C 6.85V 10K40C 6.7V 5.17K50C 6.65V 3.45K

Page 95: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 85

Figure A-8. Battery charging.

Linear Regulators – 5VDC and 3.3VDCA series pass 5V regulator is built using transistor Q312 and op amp U305A. A 5V reference from U302 PWM IC) is used as the control voltage for the regulator. The output of the 5V regulator is turned off when the unit is turned off. When the 18V-boost circuit is shut down, power is removed to U302, then the U302 reference is driven to 0V. Setting the reference to 0V will cause op amp U305 to turn the series pass transistor Q312 off. When operating from AC, transistor Q310 is turned on, which will turn transistor Q311 off. Power to the 5V regulator is then provided through Diode D310 from the output of the bat-tery charger circuit. Note that this voltage tap is before the current sense resistor, then load current on +5V does not affect the battery charger current limit circuit. When AC is removed, the AC-On signal goes low, and Q310 turns off. The gate of Q311 is then pulled up to 11.4V (12V – Vdiode). Transistor Q311 then turns on, and the 5V regulator is powered from the battery.

3.3VDC is derived using a three terminal regulator. The output of the 5V regulator is used to power the 3.3V regulator. The 3.3V regulator does not have an independent shutdown, but powers down as the 5V regulator shuts down.

+12V

Ref-Batcharge

ACON

ACON

Ref-Batcharge

Ref-Batcharge

AC+12V-fuse

AC+12V-fuse

U305-pwr

AC+12V

Battery

To Linear Regulators

U30

4-1

Q30

6-b

U305-6

Q307-e

Q308-d

U304-5

U304-3

Bat-Adj

U303-ct

RT

301-1

U303-5

R339-2

U304-7

Q306-c

D307-A

Bat-fuse

Q308-g

Q309-3

U304-6

C319-1

Q309-b

U305-5

U30

3-ou

t

U304-2

Batt-fb

U303-cp

Q310-b

F302-2 AC+12V-fuse

R343-1

U303-fb

+

-

U304AMC34072

3

21

84

D305BAV99L

1

3

2

R34410K

Q308MTP23P06V

2

1

34

R33319.6K

R32610

R331

33.2K

R3207.5K

+ C318330uF

Q309MMBT3906L3

12

R323 1.96K

R32410K

Q307MMBT3904L

3

1

2

C3162200pF

R3251.96K

Q310MMBT3904L

31

2

D307MBRS340T3

R34110K

C315.047uF

+

-

U304BMC34072

5

67

84

R3354.32K

R34010K

R33219.6K

Q306MMBT3904L

31

2

L30447uH

R34219.6K

C322.047uF

+

-

U305BMC34072

5

67

84

R3378.87K

R3291K

D308 BAV99L

1

3

2

C321.01uF

C314.047uF

R32210K

R33419.6K

D306MBRS340T3

R3281K

R33919.6K

R33033.2K

R34510K

t

RT30110K

R32127.4K

F3014Amp

F3024Amp

R3270.1

U303UC3843A

3

57

14

1

10

812

911

VFB

ISENSERT/CT

VREF

COMP

OUT

PW

R-G

ND

Vcc

GN

DV

c

R338

1K

13

2

R3367.5K

+C3191000uF

R34310K

R31810K

R31919.6K

C320.01uF

C337.047uF C338

.047uF

D309BAV70L

1

3

2

L306BeadC340

.047uF

Float Voltage

Current Limit(1.5 Amp)

BatteryCharger Input to 5V and

3.3V linearregulators.

Page 96: Atlas Patient Monitor - Henry Schein

86 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Figure A-9. Linear regulator.

A/D – grounded circuits

The A/D converter is designed by building a pulse width modulator (PWM) and a timer cir-cuit. The PWM runs at a 1.2KHz rate, synchronized by the A/D sync signal (NIBP-ADC-Clock). A/D sync is low for 52.1uSec, high for 781.25uSec. Component values are selected such that the integrator will ramp down 4.7V, and ramp up 7.83V. The voltage at the integra-tor output (U601-1) is limited to about 5V [5V*(73.2/83.2) + Vdiode)]. Then, the integrator starts at 5V and ramps linearly down to 0.3V.

The analog input voltage to be digitized and the integrator output are the inputs to compar-ator U210. The output of the comparator is low at the start of an A/D cycle, and switches high as the integrator ramp drops below the input voltage being digitized (see the timing diagram below). A/D conversion is accomplished by measuring the width of the PWM out-put signal. The A/D timer runs at 25.175MHz, then the A/D resolution is about 21000 counts (over 14 bits). Note that since the output of the comparator is low at the start of the A/D cycle, a resistor divider is formed at the comparator input. This divider reduces the Analog-In signal by 0.75% [464K/(464K+3.48K)].

Figure A-10. NIBP PWM A/D converter.

DDD

+12V

D

+12V

+Vpump

+3.3V

5VRef

AC+12V-fuse

+5V

ACON

Battery

Batt Charger input

To Q309

U305-3

C324-2

U30

5-1

U30

5-2

Q312-g

Q310-b

R343-1

U306LF33CV

1 3

2

IN OUT

GN

D

C326.01uF

D310MBRS340T3

C3241000pF

R34710K

R346100

+ C323100uF

HS302

6078

Q311MTP30N06VL

23

1

4

R350

10K

D311BAV70L

1

3

2

+ C329100uF

C327.047uF

C330.047uF

+ C325100uF

R34910K

Q312

MTP30N06VL

2 3

1

4

C328.047uF

R34810K

+

-

U305AMC34072

3

21

84

R34310K

R34510K

Q310MMBT3904L

31

2

R34219.6K

D309BAV70L

1

3

2

R34410K

R34110K

+5V LinearLowDropout

HeatsinkforQ312

From BateryCharger Circuit.

NIBP-PWM-ADC

P+5V

P+5V

NIBP-ADC-Clock

P+5V

Analog-Input

U207-3

U210-3

U210-7

U208-3

U208-2

U208-1

D201-C

U209-Out U210-2

A

AA

A

P+12V

A

A

A

A

A

R237464K

C221.047uF

C220

.01uF

+C2184.7uF

C2241000pF

R23173.2K

R23210K

R2353.48K

C225.047uF

U207B74HCT00

4

56

14

7

R2333.48K

+

-U210MAX941

2

36

1 4

7

5

R2343.48K

C219.047uF

+

-

U208AMC34072

3

21

84

R23010K

U207A74HCT00

1

23

14

7

D201MMBD1503A

1

3

2

NIBPPWM A/DConverter

PWM A/DConverter

Page 97: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 87

Figure A-11. PWM timing.

A/D Mux – grounded circuitsAnalog signals are switched to the A/D converter through MUX U209. Control of the multi-plexer is through a serial communication channel from the main CPU. The following signals are digitized:

+5V/2 Sampled version of the 5V supply. Used to verify A/D operation.SafetyPres Safety Pressure TransducerPrimaryPres Primary Pressure TransducerP.75V Reference voltage for A/D calibration. 0mmHg pressure for Primary Transducer.P4.25V Reference voltage for A/D calibration. 300mmHg pressure for Primary Transducer.Print-Temp Printhead Temperature, used to compensate printer strobe width.Model 622/623: Vbatt Battery Voltage, used to warn of low battery condition Model 621: Not Used.Model 622/623 BattCurrent: Battery charger current, used in service mode verification. Model 621 LithMeas Backup Battery voltage (Lithium Battery) Used to warn user of low backup battery condition.

NIBP Circuits

Overview - Safety:Two pressure transducers are used, a primary and safety transducer. The primary is used to make all BP measurements. Hardware circuits monitor the output of the primary transducer, looking for overpressure faults. In addition, Software monitors the digitized outputs of the primary transducer, and detects overpressure faults. The following overpressure faults are detected in software (monitored once per second):

>=10mmHg pressure for 295 seconds>=15mmHg pressure for 175 seconds>295mmHg pressure for 0.5 seconds.

Analog In

(U207-3) 781uSec

52uSec

0.31V

PWM-timer

ComparatorInputs

PWM-Out(U207-6)

+5V

IntegratorInput -f=1.2KHz

Page 98: Atlas Patient Monitor - Henry Schein

88 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Software detected overpressure faults are considered application faults. The user is warned of a fault with an audible alarm and a ‘Check blood pressure cuff’ message on the CRT dis-play. NIBP is not disabled for this type of fault. In the event of a fault, the drive signals to the NIBP pump and valve are opened.

Two hardware faults are detected, pressure over 330mmHg (nominal trip point 314mmHg, and pressure over 15mmHg for three minutes (13.3mmHg nominal trip point). These faults are considered more serious (since software should have detected and corrected this condi-tion). The user is notified with a ‘BP SYSTEM FAULT’ message, and NIBP is disabled. A redundant safety transistor is opened to ensure the NIBP pump is off and the valve is open.

The primary and safety transducer outputs are continuously digitized. The outputs of the transducers are checked vs. each other, and if they disagree, an ‘NIBP Fault Message’ is declared and the NIBP system is disabled. The outputs of the transducers are linearly pro-portional to the supply voltage (supply current for the safety transducer). The transducers use unique reference voltages to ensure that a fault in one reference will not cause an equiv-alent gain error in both transducers.

The A/D also has redundant checks. Two reference voltages (derived from the primary transducer reference supply) are measured, and the A/D gain and zero is checked. In addi-tion, a unique reference is digitized, and compared vs. expected results. An error in any of these A/D measurements will again cause an ‘NIBP Fault Message’, and the NIBP system will be disabled.

Primary Transducer - Amplifier:The primary pressure transducer is a fully calibrated and compensated transducer with built in voltage amplification. The output of the transducer is proportional to the supply voltage. With a 5V supply, the output of the transducer is:0mmHg = 0.5V.300mmHg = 4V.Op amp U204A is used to level shift the output of the transducer such that the nominal volt-age for 0mmHg is set to 0.75V. The CPU monitors the digitized zero pressure voltage, and any offset is corrected. This correction comes from the summation of an error correction sig-nal through op amp U204B. The CPU will output a pulse width modulated signal at 76.8KHz. This signal is RC filtered to provide ad DC voltage at U204-5. This signal can adjust the offset seen at the A/D converter by +/-20mmHg.

Page 99: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 89

Figure A-12. Primary transducer amplifier.

Safety Transducer - AmplifierThe safety transducer is compensated for temperature drift, but gain and zero are not cali-brated. The safety transducer does not include built in voltage amplification. The safety transducer output is a differential voltage, proportional to the supply current through the device.

The initial accuracy of the safety transducer is very loose, in the order of +/-50%. However, the drift over time and temperature is very good. Then, it is necessary to calibrate the output of the safety transducer. This is done my measuring a know pressure, measuring the output of the safety transducer, and storing calibration constants in NVRAM. A two-point calibra-tion procedure is used. Calibration is done at the factory, and can be recalibrated in the field if necessary.

Current Source:Op amp U205A is configured as a current source for the Pressure Transducer, with the cur-rent through the transducer set to 1.5mA. Nominal gain for the transducer is 300mmHg = 75mV.

Differential Amplifier and Offset Centering:The output of the safety transducer is a differential voltage, with a nominal gain of 0.25mV/mmHg, and a zero pressure offset voltage of +/-25mV. The A/D converter has an input volt-age range of 0.5V to 5V. It is necessary to both add both signal gain and offset centering to the transducer output before digitalization.

Op amp U206A/B is configured as a differential amplifier, with a voltage gain of 22.5. The output of the differential amplifier is offset by 1.2V (U205B).

P+5V

P+.75V

+3.3V

NIBP-Offset-DAC

PrimaryPres

P201-Out

U204-5

U204-2

U204-7

U204-3

P201-pwr

P201-6

U204-1

C207-1

A

P+12V

A

A

A

A

A

A

A A

A

P+12V

A

A

C232.047uF

C227680pF

C209.047uF

C228.047uF

R2175.62K

R213237K

L202

Bead

C226.047uF

R2363.83K

R21823.7K

+

-

U204BMC34072

5

67

84

C231.01uF

R24421.5K

C206.047uF

R215100K

R21256.2K

+

-

U204AMC34072

3

21

84

+C2081uF

R2191.96K

GainandComp

XFPM-050KPGR-P1P201

1

2

3

6

R21619.6K

R21410K

+ C2071uF

PWM D/A76.8KHz

0mmHG = 0.5V 300mmHG = 4.0V

PrimaryTransducer

Zero Adjust+/-20mmHg range

Page 100: Atlas Patient Monitor - Henry Schein

90 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Figure A-13. Safety transducer amplifier.

Hardware Overpressure:The output of the primary transducer is monitored for two overpressure conditions; pres-sures in excess of 13.3mmHg (nominal) and 314mmHg (nominal) are detected. These error conditions are transmitted to the gate array on the CPU board, and if the error conditions are present for a long enough time period, a fault message is displayed, and NIBP is disabled (see above for safety performance operation).

The output of the Primary Transducer drives the two comparators U203A/B. The compari-son voltage is derived through a resistor divider chain from a 5V regulator (U201). This reg-ulator is the supply voltage for the primary transducer, and sense the primary output is proportional to the supply voltage, tolerance errors in the regulator are not critical.

5VRef

SafetyPres

P202-5

P202-Out+U206-1

U206-2

U206-7

U205-7

P202-Out-

P202-2U205-3

A

A

P+12V

P+12V

P+12V

A

A

A

A

A

A

A

P+12V

A

C212680pF

+

-

U205AMC34072

3

21

84

R22621.5K

R2251K

-+

FPNS-07PGRP2022

13

5

6

C216.047uF

+

-

U206BMC34072

5

67

84

+

-

U206AMC34072

3

21

84

+

-

U205BMC34072

5

67

84

C215.047uF

R2213.16K

R2221K

C211

.047uF

C213.01uF

TP226

R22321.5K

C214.047uF

R220806

C217

.047uF

R2275.11K

R2241K

ZeroOffset

SafetyTransducer

Page 101: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 91

Figure A-14. Over pressure fault circuit.

Pump and Relay Drive:Two independent dual transistor switches, Q202 and Q203 control the pump and valve. Q202 is controlled by logic circuits on the CPU board, and is normally in the on state. Q202 is only opened in a fault condition (over pressure, A/D calibration error, or transducer mis-match). Once a fault is detected, Q202 will remain open until power is cycled. Under nor-mal operation, dual transistor Q203 is used to switch the pump on and close the valve. The pump-on and valve-close commands are controlled by software. Note that the valve is nor-mally open. Then, in the case of no power, the valve will be in the open state.

Figure A-15. Pump relay circuit.

Note: Model 621 uses a single Mosfet for transistor Q202, with the drain connected to +6V, and the source connected to nets ‘Pump+’ and ‘Valve+’ through a series diode.

P+12V+12V P+5V

P+.75V

NIBP-Overpressure

NIBP-15mmHg

P+4.25V

PrimaryPres

U203-5

U202-3

U202-5

U203-6

U203-3

U203-2

A

A

P+12V

A

A

+3.3V

A

A

A

P+12V

A

A

P+12V

A

AA

A

+3.3V

A

P+12V

+

- U203BLM393

5

67

84

R2111.96K

C203

.047uF

L201220uH

+C22910uF

R2081.96K

R207464K

R202174

+

-

U202AMC34072

3

21

84

C223.01uF

R2061K

+ C2024.7uF

C205

.047uF

+

-

U202BMC34072

5

67

84

C222.01uF

U20178L05

8 1

2 3 6 7

IN OUT

GN

D

GN

D

GN

D

GN

D

C201.047uF

R204150

C204.047uF

R201576

R2091K

+

- U203ALM393

3

21

84

R210464K

R205750

R2033.32K

Over PressureFault Circuit

NIBP-Pump-OnNIBP-Valve-Close

NIBP-Safety

+5V +Vpump

Pump-

Valve-

Pump+

Valve+

Q201-B

Q202-G

D20

1-A

+12V

Q203MMDF2N02E

81

2

5 67

3

4

R246

31.6

Q201MMBT3904L

31

2R243100K

R24110K

R24210K

D202BAV99L

1

3

2

R2481K

J201

CON5

12345

R2471K

R24010K

Q202MMDF2N02E

81

2

5 67

3

4

Page 102: Atlas Patient Monitor - Henry Schein

92 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

CRT Deflection Board

Overview:

Atlas uses a 5-inch monochrome CRT display. This CRT will display Waveform Data (ECG and Respiration or SpO2 or ETCO2), plus Text Data (Heart Rate, Alarm Values, Trend Data, setup, and service menus). The CRT Deflection board performs the following functions:1. Vertical Deflection.2. Horizontal Deflection.3. CRT Grid Voltages.4. Video Amplifier.CRT Deflection is magnetic, vertical and horizontal deflection is controlled by regulating current through the vertical and horizontal coils of the CRT Yoke. The Deflection board is designed to the following specifications:

Resolution: VGA (640X480) Dot Clock: 39.7nSec (1/25.175Mhz) Display Size: 100mm (Horizontal) X 68mm (Vertical)

Vertical: Scan Rate: 60Hz Reset Time: 750uSec Blanking Time:1.2mSec

Horizontal: Scan Rate: 31.5Khz Reset Time: 5uSec Blanking Time: 5.7uSec

Vertical Amplifier:

Ramp Generator:

Figure A-16. Ramp generator circuit.

A ramp generator is built from the integrator (U1A, C1, and R3). The slope of the integrator

+12V+5V

VsyncRampU4.2

U1.2

d6.c

U1.3

C3.047uF

U4A

74HCT04

1 2

R43

5.11K

R521.96K

R27.50K

R11K

R323.7K

C1.1uF

D11N4148

12

D61N4148

12

+

- U1ATLC272

3

21

84

Ramp Generator

750uSec

16.7mSec

Vertical Sync

VerticalSync

16.7mSec

750uSec

3.95Vpp

5.0V

Page 103: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 93

is: V = (I*T)/C. The integrator is designed so that it ramps up 6.97V in 750uS and ramps down 3.95V in 15.9mS. Diode D1 clips the output voltage at about 5.0V (U1-pin3 + Vdiode). Then the ramp resets at 5.0V each cycle, and integrates down 3.95V.

Figure A-17. Vertical amplifier circuit

Vertical Amplifier:

The Vertical amplifier will generate a linear current ramp of +/-200mA. The vertical ampli-fier is an H-Bridge type driver. Positive current flow (deflecting the beam above the center-line) is defined as current from +12V to Q1 to Rsense through the coil to Q4 to Ground. The negative current path is from +12V to Q3 through the Coil to Rsense to Q2 to Ground.

The input to the vertical amplifier is the ramp voltage generated above. The objective of the vertical amp is to match the current through the vertical coil with the input ramp control voltage. Current through the vertical coil is monitored through the sense resistor, formed from R15, R16, and R17. Voltage across the sense resistor is measured with the differential amplifier U1B. This voltage is then used as the feedback voltage to the control opamp, U2A.

Zero Adjust:The output voltage from the ramp generator is a ramp from 5.0V to 1.05V (nominal). The center of this ramp is 3.0V. Then, the output of the current sense diff amp must be offset by 3.0V. This is accomplished with the Zero Adjust Network, Resistors R9, R10, and R11. Verti-cal centering is then accomplished by writing a pattern to the CRT, and adjusting R10 to center the display.

+5V

+5V

Ramp

q4.b

q3.b

u2.6

u1.5

u2.7

q1.b

vadj

q1.e

u1.6

u1.7

vcadj

vcadj-vcadj+

q2.b

u2.2

+12V+12V

+12V

+12V

Q1MPSW01A

32

1

R17 10

R15 38.3R20169+

-U2A

MC34072

3

21

8

4

R641.2K

R9

1.47K

+ C522uF

R410K

+

-U2BMC34072

5

67

8

4

Q4MPSW51A

32

1

R11

1.96K

C4.047uF R19

562

R18562

R741.2K

R2310K

R13169

+

-

U1BTLC272

5

67

8

4

R841.2K

C2100pf

R2210K

R10 1K

R542.2K

R21562

Q2MPSW51A

32

1

R16 10

Q3MPSW01A

32

1

R12562

R14562

L

Vertical Yoke

Vertical Amplifier

Size Adjust

Zero Adjust

Page 104: Atlas Patient Monitor - Henry Schein

94 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Size Adjust:

Adjusting the current through the Vertical Coil changes vertical deflection. The voltage across the sense resistor is:Vsense = (Vramp-Voffset) / 1.02 (1.02 is the gain of the current sense diff amp) Current through the coil is equal to current through the sense resistor network.coil = Isense = Vsense / RsenseThen, adjusting the value of the sense resistor will change the current through the vertical coil. Vertical gain is then accomplished by writing a pattern to the CRT, and adjusting R16 to set vertical deflection.

Horizontal Amplifier:

Current through the transformer increases linearly as Transistor Q6 is On (I = VdT/L). When the transistor opens, the drain voltage kicks up, and the current through the Transformer coil flows through C9, L2, L3, and the Horizontal Coil to Ground The transformer quickly loses flux (reset time < 5uSec). Current continues to flow in load inductance, from Ground through Q6-diode, C9, L2, L3, and the Horizontal Coil to Ground. This current flow charges capacitor C9. The current decreases linearly to 0, then changes directions. This is due to the AC coupling capacitor C9 being charged to a negative voltage. Current flow is then from Ground through the Horizontal Coil, L2, L3, C9, and Q6 to Ground. The drive to MOSFET Q6 is AC coupled. This will prevent Q6 to be driven high in the event of a faulty driver on the CPU board.

In order to get adequate deflection current (about +/-2.3Amps), 18.5V across the transformer coil is necessary. A “boost” winding is added to the transformer, then when the voltage on the transistor drain flys up, current flows into capacitor C11. C11 charges to a voltage deter-mined by the turns ratio in the transformer.

Horizontal Gain:Horizontal deflection is adjusted by changing the current through the Horizontal coil. Changing the series inductance in the Horizontal Deflection Path modifies the current. Increasing Horizontal gain is then accomplished by writing a pattern to the CRT, and adjust-ing the “width coil”, L3.

Horizontal Centering: Horizontal centering is accomplished by rotating magnets mounted on the CRT Yoke assembly.

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Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 95

Grid Voltages:

The following voltages are developed to bias the grids on the CRT:Grid 1: 10V to -50V DC (Brightness Adjust)Grid 2: 350VDCGrid 4: 0V to 350VDC (Focus Adjust)Anode: 7.5KV

These voltages are derived from additional windings on the FBT. In addition, the supply voltage for the video amplifier (+36VDC) is generated from a tap on the FBT.

Figure A-18. Horizontal amplifier grid voltage circuit.

Video Amplifier:

The CRT tube turns a dot on when video out is low (near 0V), and off when video out is high (+Vvid = 28V). The input to the video amplifier is a digital signal (3.3V logic level) from the uProcessor. An input of 0V turns the dot off, an input of 3.3V turns the dot on. Transistor Q7 amplifies and inverts this signal. Video out is driven low through D7, and driven high through emitter follower Q8. .

+12V

+12V

+12V

+Vvid

Grid 2

Intensity

Hsync

Focus

+B

hwide

Vg2

d5.c

q5.c

C22-2

Vd

q6.d

Vg1

+12filt

Hor

Grid1

hlin

q5.b

d4.a

Boost

Q6IRF640

2

1

34

C15.01uF

R2710

L215uH

LHorizontal Yoke

D51N4937

1 2

U4B

74HCT04

3 4

C22.022uF

D31N4935

1 2

+ C1222uF

L1

47uH

Q52N3904

32

1

R2410K

C8.022uF

D2

MUR120

1 2

R30100K

C14.01uF

+C101000uF

C16.01uF

R29 100K

R25215

+ C13

22uF

To CRTAnodeT1

CRT-FBT

10

9

7

1

3

5

2

8

R261K

+C111000uF

R2819.6K

R501.96K

R322.5Meg

C96.8uF

D41N4935

12

C17.01uF

L315- 35uH

31.7uSec

Horizontal AmplifierGrid Voltages

5.5uSec

FocusAdjust

Horizontal Sync

BrightnessAdjust

Page 106: Atlas Patient Monitor - Henry Schein

96 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Figure A-19. Video amplifier circuit.

Recorder Electronics

Overview:Atlas includes a thermal strip chart printer (optional on Model 200 and 210, standard on model 220). The user can print either annotated waveform data or Patient trend informa-tion.

The printer specifications are: Paper Size: 56 or 58mm (2 1/4 inches) Printhead Width: 54mm (2 1/8 inches) Resolution: Vertical: 8 dots/mm, (200 dots/inch) Horizontal: 12 dots/mm (300 dots/inch) Chart Speed: 25mm/sec (1 inch/second)

The main CPU controls the printer. Data timing, clock signals, and strobe widths are all gen-erated by the FPGA on the CPU board. These signals are buffered on the recorder board (inverter U5), before transmission to the printhead.

Power Supply – 24 SwitcherIt is necessary to generate 24VDC for the print head and motor. The input to the 24V switcher is either 12V from the AC/DC converter, or Battery voltage on the model 210/220 when AC is not present. The circuit is configured as a boost PWM using current mode feedback. The PWM controller is a UC3843A. The controller includes an internal 2.5V, 1% reference, and an external 5V, 1% reference. Nominal output voltage for the boost converter is Vout = [2.5V*(1 + 84.5K/10K)] = 23.6V.

The converter will run at duty cycles over 50%, which requires slope compensation for a current mode controller. Slope compensation is added by summing in part of the oscillator signal with the current sense line.

+Vvid

+5V

VideoIn

VideoOut

q8-b

q7-g

q8-e

u4-6

C19.01uFR37

1.96K

Q82N3904

32

1

R361.96K

R5119.6K

U4E

74HCT04

11 10

R48100

D71N4148

12

Q7BS170

1

2

3

R41681

Video Amplifier

Page 107: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 97

The PWM current limits on a cycle to cycle basis. The supply will be in current limit when the Isense line reaches 1V. Current limit is set to about 3.5 Amps from 12VDC or 5Amps from battery.

Two control signals exist for the 24V switcher, n24Von and Rec-Supply-On. The 24V switcher is disabled when n24Von is high. This signal is controlled by the on board PIC pro-cessor. The switcher is held off at power up, and allowed to start after 50mSec. This is done to reduce inrush current at power up. The signal Rec-Supply-On enables power to the print head, and is controlled by the main CPU. Power is only applied to the print head when the recorder is running.

Figure A-20. Recorder power supply circuit.

Motor Driver:Atlas uses a stepper motor to drive the paper. The microcontroller (U3) is programmed to apply the appropriate phased signal to the motor. A quad darlington switch (U6) amplifies the signal from the controller to signal levels needed to drive the motor. Motor speed timing is derived from the main CPU, and transmitted to U3 on signal line U3-clk (U2-pin2).

Figure A-21. Printer motor drive circuit.

RecVdc

RecVdc

+24V

n24VOn

+24V-switch

U2-

Isen

se

U2-Ref

U2-RT

Q6-e

U2-

out

Q4-

GU2-comp

Rec-Supply-On Q2-b

Q4-D

U2-fb

Q4-s

A+5V

A

A

A

A

A

A

A

A

A

+12V

A

A

A A

R193.16K

+ C41000uF

TP8

C11.047uF

TP14

L122uH

TP17

R1619.6K

C7.01uF

R224.22K

R1310

C135600pF

Q4MTP30N06VL

23

1

4R1410K

R170.1

R610K

TP10

Q32N7002

3

1

2

R1210K

TP19

+ C61uF

TP21

C142200pF

R115.11K

R18no-load

Q6MMBT3904L

3

1

2

R15147

TP23

Q2MMBT3904L

31

2

R910K

R1010K

TP9

D2MBRS340T3

U2UC3843A

3

57

14

1

10

812

911

VFB

ISENSERT/CT

VREF

COMP

OUT

PW

R-G

ND

Vcc

GN

DV

cR7

84.5K

+ C81800uF

Q1MTP30P06V

2

1

34

R310K

PrintheadPowerSwitch

SwitcherDisable

ToPrinthead

ToMotorRecorder

PowerSupply

U3-clk J3-1

u6-11

u6-clmp

J3-3

d6-c

U3-8

U3-10

n24Von u6-14 J3-4

J3-6

U3-9u6-3u6-6

U3-7

A

A

+24V+24V

+5V

DA

D627V

13

R331.47K

U6ULN2065

36

1114

27916

18

1B2B3B4B

1C2C3C4C

CLMP1CLMP2

C19.047uF

TP26

R351.47K

TP29

C18.047uF

TP1

J3

CON6

123456

R361.47K

TP67

+C2047uF

R341.47K

D127V

13

TP28

TP27

U3

PIC16C505

2

5

7

4

3

6

1 14

8

9

10

11

12

13ClkIn/Osc1/RB5

RC5/TOCK1

RC3

Vpp/MCLR/RB3

Clkout/Osc2/RB4

RC4

Vdd

Vss

RC2

RC1

RC0

RB2

RB1

RB0

+

4

Connector Pin #

+

43

+

1

+1phase +23

+

6

++

Page 108: Atlas Patient Monitor - Henry Schein

98 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Temperature Amplifier:The printer will print darker as temperature is increased. Print darkness can adjusted by controlling the time a dot is turned on. A thermistor is included on the printhead. This ther-mistor is nominally 30K, and decreases as temperature increases. The output of the temper-ature amplifier is a function of the thermistor voltage, Temp = .755*(1+R8/Rtherm). This voltage is digitized (on the main board), and the CPU can compensate dot width in order to maintain consistent printing over temperature.

Figure A-22. Print head temperature circuit.

Patient Isolated Circuits

Isolated PowerIsolated power is provided to the ECG, SpO2, Temperature, and Impedance Respiration cir-cuits using an Isolation Transformer T401 (temperature and respiration on models 622 and 623 only). The power supply is a PWM controlled flyback converter. The PWM controller is an LM3524. Output voltage f+V is sampled and compared with a 5V reference voltage. An error voltage is generated, and this voltage returned via opto U410. Voltage f+V is regulated to 7.4V. A second tap on transformer T401 provides f-V (-7.4V). The switcher operates at 76.8KHz, controlled by a sync signal from the CPU board. The power supply is synchro-nized with the A/D converter used to digitize ECG, Temperature and Respiration signals.

Thermistor1

Thermistor2

Temp

U1-1

U1-2

U1-3

A A

+5V

+5V

+5V

A

A

A

R151.1K

TP6

D3

BAV99L

1

3

2

C1.047uF

R21K

TP3

C5 .01uF

TP54

C3.01uF

R8 23.7K

R49.09K

C2.01uF

R51K

+

- U1AMC34072

3

21

84

ThermistorInput

PrintheadTemperatureAmplifier

Page 109: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 99

Figure A-23. Patient isolation circuit.

Linear Regulators and Filtering – Model 621From the raw f+V and f-V voltages (labeled fVcc and fVee on model 621), the following sup-plies are generated for the various patient isolated circuits:iso+5dig: Regulated 5V supply. This voltage is used to power the opto-isolators and digital control logic. This is also the reference voltage used in the regulation of f+V.f+5V: Regulated +5V supply: Filtered and buffered from iso+5dig, this voltage is used for the A/D reference.fVcc: This voltage is used to power the Op-Amps used in the ECG and A/D circuits. This voltage also powers the Nonin SpO2 electronics.fVee: This voltage is used to power the Op-Amps used in the ECG and A/D circuits.

Figure A-24. Model 621 line regulation and filtering.

S

S

S

S

S

SS

ED SE

S

FE-Pwr-Sync

+5V

+12V

+12V

f+V

s+5V

f-V

f+V

U402-1

C409-1

T401-4

Q40

1-g

U402-sen

opto-fb

iso401-a

Q40

2-e

Q401-s

U401-1

C408-2

U401-2iso401-b

U402-e

U402-ref

U402-rt

U401-3

f+V T401-1

T401-8

R419-2

U402-ct

R405215

C409470pf

R4031K

+C405100uF

+C407100uF

R40710

D405BAV99L

1

3

2

R4095.11K

R408100

C410.01uF

R4060.2 R410

7.5K

Q402MMBT3906L 3

12

C414.047uF

R4115.11K

U402

LM3524DM

12

16

15

945

10

67

12111314

3

8

V-V+

VREF

VIN

COMP+SENSE-SENSE

SHTDWN

RTCT

CAEACBEB

OSCOUT

GN

D

+ C41210uF

U4104N25

1 6

2

5

4

C408.01uf

R40210K

R404196K

C402.047uF

C404.047uF

C420.047uF

C4112200pF

R42210K

+

- U401ALM358

3

21

84

D403

MBRS130T3

D401MBRS130T3

R4235.11K

R40110K

C433470pf

R419215

Q401MTD3055V

23

1

4

R41710K

TP459

TP462

TP464TP463

TP450

TP449

TP453

TP454

TP456

TP458

TP451

TP455

TP457

TP466

T401

IsoXfmr

5

8

1

2

3

4

IsolationBarrier

PatientIsolatedCircuits

GroundedCircuits

R41610K

SS

C417680pf

C401.047uF

fVcc

U403LP2951C

873

62

15

4

VINFDBKSHTDN

TAPSENS

VOUTERR

GN

D

S

iso+5Vdig

U401-7

S

+

-

U401BMC34072

5

67

84

R415100

C416.047uF

+C406100uF

+C4184.7uF

S

fVcc

U403-7

S

S

+C4151uF

S

C403.047uF

U401-5

f+5V

Page 110: Atlas Patient Monitor - Henry Schein

100 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Linear Regulators and Filtering – Model 622 and 623From the raw f+V and f-V voltages, the following supplies are generated for the various patient isolated circuits:iso+5dig: Regulated 5V supply. This voltage is used to power the opto-isolators, digital con-trol logic, and 5V digital supply for the Nellcor SpO2 board.s+5V: Regulated +5V supply: Analog 5V supply for the Nellcor SpO2 board. This is also the reference voltage used in the regulation of f+V.f+5V: Regulated +5V supply: Filtered and buffered from s+5V, this voltage is used for the A/D reference.s-5V: Regulated –5V supply: Analog –5V supply used for the Nellcor SpO2 board.fVcc: LC Filtered voltage, derived from f+V. This voltage is used to power the Op-Amps used in the ECG, Respiration, Temperature, and A/D circuits.fVee: LC Filtered voltage, derived from f-V. This voltage is used to power the Op-Amps used in the ECG, Respiration, Temperature, and A/D circuits.

Figure A-25. Model 622/623 line regulation and filtering.

S

S

S

S

S

S

S

S

S

S

S

S

SS

S

S SS

fVcc

iso+5Vdig

s+5V

fVee

s-5V

f+V

f-V

f+5V

f+V

U40

3-fb

U401-7U401-5

+

C421

1uF

C401.047uF

TP468

L401 220uH

U40479L05

2 1367

5

IN OUTINININ G

ND

+ C43110uF

TP452

+ C4151uF

+ C43210uF

+ C406100uF

C403.047uF

C430.047uF

U40778L05

8 1

2 3 6 7

IN OUT

GN

D

GN

D

GN

D

GN

D

+ C43410uF

C424.047uF

+ C43510uF

U403LP2951C

873

62

15

4

VINFDBKSHTDN

TAPSENS

VOUTERR

GND

L402 220uH

+C4184.7uF

C417680pF

TP461TP460

+

-

U401BLM358

5

67

84

R41610K

TP465

R415100

C416.047uF

Isolated Supply VoltagesRegulation and Filtering

Page 111: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 101

A/D Circuits

M A/D

A pulse width modulator is used as an A/D converter. The PWM runs at a 1.2KHz rate, syn-chronized by the A/D sync signal. A/D sync is low for 52.1uSec, high for 781.25uSec. Using the values shown, the integrator will ramp down 10.01V, and ramp up 25V. The voltage at the integrator output (U601-1) is limited to about 5V [5V*(73.2/83.2) + Vdiode)]. Then, the integrator starts at 5V and ramps linearly down to –5V.

The analog input voltage to be digitized and the integrator output are the inputs to a com-parator. The output of the comparator is low at the start of an A/D cycle, and switches high as the integrator ramp drops below the input voltage being digitized (see the timing diagram below). A/D conversion is accomplished by measuring the width of the PWM output signal. The A/D timer runs at 25.175MHz, then the A/D resolution is about 21000 counts (over 14 bits). Hysteresis is added to the comparator to avoid oscillations during switching. Note that since the output of the comparator is low at the start of the A/D cycle, a resistor divider is formed at the comparator input. This divider reduces the Analog-In signal by 0.75% [464K/(464K+3.48K)].

Figure A-26. A/D converter circuit.

EfVee

fVcc

E

f+5V

fVee

fVcc

E

iso+5Vdig

f+5V

Analog In

PWM-Out

U60

2-7

U601-2

U604-10

D601-2

U60

2-5

U60

2-2

U601-3

U601-1 U602-3

R607464K

R6081K

R60110K

R60346.4K

R6063.48K

C601

1000pF

C603680pF

D601MMBD1503A

1

3

2

R60410K

+

-

U601AMC34072

3

21

84

R60273.2K

+

- U602LM311

2

37

5 64 1

8

R6053.48K

U604D74HCT04

9 8

14

7

PWM-Out

IntegratorInput

+5V

-5V

(U604-10)

PWM A/DConverter

833uSec

52uSec

Analog In

ComparatorInputs

(U604-8)

f+5V

E

A/D-sync

U604E74HCT04

11 10

14

7

PWM-timer

Page 112: Atlas Patient Monitor - Henry Schein

102 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

A/D MultiplexerThe model 621 uses an 8-channel multiplexer, the model 622/623 uses a 16-channel multi-plexer, to select the analog signal to be digitized. Control of the multiplexer is through a serial communication channel from the main CPU. The following signals are digitized:

Ground Ground Reference for digitized signals, used in calibrating the A/D converterECG Amplified ECG signalV Buffer Output of the V-lead buffer, used to determine leads offLL Buffer Output of the LL-lead buffer, used to determine leads offLA Buffer Output of the LA-lead buffer, used to determine leads offRA Buffer Output of the RA-lead buffer, used to determine leads offf1.24V Reference Voltage, used in calibrating the A/D converterRL Output Output of the RL amplifierPatient Temp Analog voltage representing patient Temperature (model 622/623 only)Respiration Amplified Respiration signal (model 622/623 only)Resp Leads Off DC impedance for respiration, used to determine respiration Leads off (model 622/623 only).

Figure A-27. A/D multiplexer circuit. Note: U609 not used in model 621.

fVcc

fVee

fVeefVcc

E

E

E

E

LA

vRL

V+

RA

LL

Analog ECG

f+1.24V

Resp-LdsOffAn-Resp

Patient-Temp

Mux B

Mux A

Analog In

Mux-A/D-AMux-A/D-BMux-A/D-C

U6034051

131415121524

611109

3

168 7

X0X1X2X3X4X5X6X7

INHABC

XVD

DV

SS

VEE

U6094051

131415121524

611109

3

168 7

X0X1X2X3X4X5X6X7

INHABC

XVD

DV

SS

VEE

MuxA

MuxB

Page 113: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 103

Serial CommunicationSerial data is transmitted to the isolated circuits through Optical Isolators. The following signals are transmitted from the CPU board to the isolated circuits:

1. FE-Serial-Data: Serial Data transmitted from the CPU board to the Isolated circuits.2. FE-Data-Clk: Serial Data Clock.3. A/D Clk: Serial Data latch. Also used as clock for PMW A/D converter.

Serial Data is converted to a parallel format using Shift Register U605 and U606. The follow-ing Data is transmitted from the CPU board to the isolated circuits: 1. Mux-A/D-A Control bit A for A/D Mux2. Mux-A/D-B Control bit B for A/D Mux3. Mux-A/D-C Control bit C for A/D Mux4. Mux-Lds-A Control bit A for ECG Lead Select Mux5. Mux-Lds-B Control bit B for ECG Lead Select Mux6. Mux-Lds-C Control bit C for ECG Lead Select Mux7. Sw-RLD-RA Switch Reference Electrode to RA8. Sw-RLD-LA Switch Reference Electrode to LA9. Sw-RLD-LL Switch Reference Electrode to LL10. Sw-RLD-RL Switch Reference Electrode to RL11. MonBW Select 0.5Hz ECG high pass pole (used to restore ECG baseline).12. MuxB 0 – Select A/D Mux B; 1 - Select A/D Mux A13. Sw-RLD-V Switch Reference Electrode to V14. Sw-RespReset Switch Respiration High Pass Pole, used to restore baseline

(model 622/623)15. SpO2Reset Reset Nellcor SpO2 board (model 622/623 only)16. Resp-Off Turn respiration off when respiration not used (shuts down drive signal)

(model 622/623 only).

Page 114: Atlas Patient Monitor - Henry Schein

104 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Figure A-28. Serial communication circuit.

Signal IsolationOptocouplers are used to electrically isolate signals. The following signals are transmitted across the isolation barrier through the optocouplers:1. SpO2 out: SpO2 serial data, waveform and status information. Opto U411 Data from the SpO2 board to the CPU board.2. Serial Data: Serial Control data for isolated circuits. Opto U613 Data from the CPU board to isolated circuits.3. Serial Data Clock:Data clock for serial control data. Opto U612 Clock from the CPU board to isolated circuits. 4. ADC Clock Clock for PWM A/D converter, also used to latch control shift registers. Opto U611 Clock from the CPU board to isolated circuits.5. PWM A/D dataA/D Pulse width data. Opto U610 Pulse width data from isolated circuits to CPU board.6. Respiration ClockClock for Respiration drive circuit (same signal as power supply sync) U710 Clock from the CPU board to isolated circuits (model 622/623 only).

ECG Circuits

OverviewAtlas provides a 5-wire front end, and will be compatible with both a 3-wire and 5-wire cable. Monitor (0.5Hz to 40Hz) Extended (0.05Hz to 100Hz) bandwidth are provided. The ECG amplifier always transmits 0.05Hz to 100Hz data to the CPU board (unless in baseline restore mode), additional filtering for Monitor Bandwidth is implemented in software.

ED

ED

iso+5Vdig

SW-RLD-LL

SW-RLD-RASW-RLD-LA

SW-RLD-RL

SpO2-Reset

Mux-Lds-C

Resp-Off

Sw-RespReset

Mux-Lds-BMux-Lds-AMux-A/D-CMux-A/D-BMux-A/D-A

Sw-RL-VMuxB

MonBW

FE-Serial-Data

FE-Data-Clk

A/D-Clk

U605-out

U606

74HCT595

14

1110

1213

151234567

9

16

8

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

VCC

GND

U605

74HCT595

14

1110

1213

151234567

9

16

8

SER

SRCLKSRCLR

RCLKG

QAQBQCQDQEQFQGQH

QH

VCC

GND

Page 115: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 105

Defib Protect, RFI FilteringThe ECG lead set includes a 1K resistor for current limiting. The neon bulbs act as a voltage clamp, limiting voltage to about 100V. Neons are chosen for their low capacitance and high DC impedance when off. Series resistors and diode clamps are used as a second set of pro-tection circuits for the front-end amplifiers. Resistors R506, R507 and Diodes D506, D507, are used to reverse bias the lead clamp diodes (D501 to D505). Two passive RC filters are used to reduce susceptibility to RFI and ESU.

Figure A-29. Defib protect and RFI filtering circuit.

Note: Typical protection for each lead wire. Model 621 uses a dual silicon series diode in place of zener diodes D506 and D507.

Front End Buffer - 1st Gain StageGain of the first stage is 9.26 (1+10K/1.21K). Bias current for each input buffer is set to 1.25V/44Meg = 28nA (VldsOff = 1.25V). On a leads-off condition, the two 22Meg resistor drives the input of the buffer to 1.25V (VldsOff), and the amplifier output saturates high (at about 5.5V). The voltage out of each buffer is monitored to detect a leads-off condition.

Figure A-30. Input buffer circuit.

fVcc

S

fVee E

E E

RA

+clamp

D501-3

-clamp

N501LAMP NEON C506

220pF

D5075.1V

1 3

R50710K

C501220pF

D5065.1V

13

D501MMBD1503A

1

3

2

R50610K

R50810K

R50151.1K

Defib ProtectRFI Filtering

To Buffer Amp

fVcc

fVee

E

VLdsOff

OutIn

U501-3

U501-2

R509-1

+

-

U501AMC34002

3

21

84 C510

220pF

R5181.21K

R51710K

R55722Meg

R50922Meg

0.1%

0.1%

Input BuffersGain = 9.26

Page 116: Atlas Patient Monitor - Henry Schein

106 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Wilson Network - Lead Select MuxA 5 wire front end must be able to render the following vectors:I LA - RAII LL - RAIII LL - LAaVR RA - 1/2*(LA + LL)aVL LA - 1/2*(RA + LL)aVF LL - 1/2*(LA + RA)V V - 1/3*(RA + LA + LL)A resistor divider network (Wilson Network) is used to create the terms above. These vec-tors are then switched though the two Lead Select Mux’s and into the differential amplifier.

Figure A-31. Lead select circuit.

Differential Amplifier and Slew rate limitA traditional 3-opamp gain stage (U507 and U508) is used to construct the differential amplifier. The topology is modified slightly with the addition of slew rate limiting (U509). The ECG signal is slew rate limited to about 100V/sec. This is done to minimize distortion of the ECG trace in the presence or large pace pulses. The differential outputs of this ampli-fier stage are used as input to the Right Leg Drive amplifier.

E

fVee

E

E

fVee

fVcc

fVcc

E

V+

RA

LA

LL

RA

V-

LL

aVL

RA

aVF

LAaVR

LA

V+

LA mux+

LL

mux-

RA

R533 10K

R536 10K

R530 10K

R529 10K

R532 10K

U5064051

13141512

1524

61110

9

3

168

7

X0X1X2X3X4X5X6X7

INHABC

X

VD

DV

SS

VEE

R534 10K

R535 10K

R537 10K

R531 10K

U5054051

13141512

1524

61110

9

3

168

7

X0X1X2X3X4X5X6X7

INHABC

X

VD

DV

SS

VEE

Lead Select

WilsonNetwork

Page 117: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 107

Figure A-32. Differential amp/slew rate amp circuit.

Right Leg Drive AmplifierThe right leg amplifier performs two functions. First is to provide bias current to the input buffer amplifiers. Second, to reduce 60Hz interference (increase CMR). Patient Common mode signals are amplified and inverted, and this resultant signal used to drive the patient. Gain of the RLD amplifier at 60Hz is maximized, while keeping the system gain stable. The RLD output is mux’d to the appropriate wire depending on the chosen input vector. For example, when looking at Lead I (LA-RA), the RLD signal is switched to the LL buffer.

Figure A-33. Right leg drive circuit.

High Pass and Gain StageThe signal from the output of the differential amplifier is AC coupled before a final stage of amplification. The High Pass Pole is set to 0.05Hz (a 3.3 second time constant). Large DC signals are sometimes present, for example, following a Leads Off condition. In order to quickly restore the ECG baseline, a transistor switch (Q504, Q505) is used to change the AC pole time constant to 0.33 seconds. Op Amp U508 provides the final amplification prior to the A/D converter.

fVcc

fVee

E

fVee

fVcc

fVcc

E

fVcc

E

fVee

fVee

mux+

mux-

SingEnd Out

u508-2

diff-

u509

-4

U508-3

u501

-8

diff+

C5451000pF

+

-

U507AMC34002

3

21

84

R565121K

C543.047uF

R54610K

R54510K

C542220pF

R54410K

+

- U508AAD712

3

21

84

+

-

U507BMC34002

5

67

84

C5441000pF

R54710K

-

+ U509LMC7101

4

31

25

0.1% 0.1%

0.1%

Diff Amp and Slew Rate LimitDC Gain = 1

0.1%

E

fVcc

E

fVeefVcc

fVee

Sw-RLD-LA

Sw-RLD-RA

Sw-RLD-RL

Sw-RLD-LL

To RL

To LL

To LA

To RADiff+

Diff-

RL-mux

C514-2

U503-2

U504

DG202CSE

31

1416

119

68

1345

2

15

10

7

S1IN1

S2IN2

S3IN3

S4IN4

V+V-GND

D1

D2

D3

D4

TP551

R52510K

+

-

U503AMC34002

3

21

84

R52851.1K

R5271K

TP552

C5140.1uF

R52610K

R51610K

RLD Amp

RLD Mux

Page 118: Atlas Patient Monitor - Henry Schein

108 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Figure A-34. High pass and gain stage circuit.

Temperature Amplifier (Model 622/623 only)The temperature option of Atlas is designed to operate with YSI-400 series probes. This probe has a negative temperature coefficient, R@30C = 1815Ohms, R@40C = 1200Ohms. The temperature amplifier is configured as a non-inverting gain stage. The positive input to the amplifier is a 1.25V reference. The output of the temperature amplifier is V = Ref*(1+Rfb/Rthermistor).

The A/D converter will digitize the An-Temp input, along with the reference voltage and ground. The gain of the A/D is calibrated from the reference voltage measurement, and any drifts in the reference voltage or A/D gain are continuously compensated during monitoring.

Figure A-35. Temperature amplifier circuit.

E

fVcc

E

E

fVeeE

An-ECG

Sw-MonBw

Diff-out U508-5

Q504-d

U508-6

Q504-g

ecg-hp

Q504-s

+

-

U508BAD712

5

67

84

Q5042N7002

3

1

2R55173.2K

R553100K

R549110K

R5521K

C516.047uF

Q5052N7002

3

1

2

C5153.3uF

R55019.6K

R5481Meg C517

.01uF

High Pass (0.05Hz or 0.5Hz)2-pole low pass

Gain StageGain = 74

E

E

fVee

fVcc

f+1.24V

+Clamp-Clamp

Patient-Temp

U608-3U608-1

Temp-In

D602BAV99L

1

3

2

C633.01uF

J601

CON2

12

R627 1.21K

R62451.1K

C635 .01uF

C634 .01uF

R6261K

R6251K

C6362200pF

+

-

U608AAD712

3

21

84

TemperatureAmplifier

TemperatureThermistor

0.1%

Page 119: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 109

Impedance Respiration (Model 622/623 only)

OverviewImpedance respiration is accomplished by measuring a change of resistance across the patient’s chest during breathing. The RA and LA electrodes (Lead I) are uses to acquire the respiration signal. A current source is driven through the patient, and the voltage developed across the patient is measured. The change in resistance caused by respiration is small, in the order of 1 Ohm. This small change must be measured on top of a large baseline imped-ance, typically 100 to 1000 Ohms.

Signal Source – Current DriveAn AC current source is used as the input signal, a 34.8KHz square wave. The Power supply sync signal, at 76.8KHz, is transmitted across opto isolator U710. Flip Flop U701, config-ured as a divide by 2, converts this signal to a 34.8KHz. Current through the patient is about 150uA Pk-Pk, set by the output of U710 (5V) and the circuit series impedance, 69K includ-ing cable resistance. The impedance of the patient is small (<2K) compared to the series impedance and has minimal affect on the magnitude of the drive current. Diode clamps are used to protect the respiration circuits in the event of a Defibrillation pulse.

Figure A-36. Respiration drive circuit.

Differential Amplifier and Peak DetectorThe AC current driven though the patient develops a voltage across the RA to LA electrodes. This signal is measured and amplified with the Differential Amplifier formed by U702A/B. This amplifier converts the differential voltage across the patient to single ended signal, with a gain of 16.8. Inverting this signal (U703A), and summing the original signal and inverted signal through the dual Diode D705 then forms a synchronous peak detector. Then, the voltage on C711 is the DC resistance seen across the RA to LA buffer. This baseline resis-tance is digitized, and if the signal is too large (>2.5K), a Respiration Lead Fault message is displayed. Note that this circuit measurement includes the two 1K resistors in the EKG cable set. This 2K resistance is subtracted in software before determining a leads off condi-tion.

E

E

f+5V

Resp-Off

Right-Arm

+Clamp

Left-Arm

-Clamp

Resp-Clk

RespDr+

D702-3

D701-3 C701-1

RespDr-C702-1

+ C7194.7uF

D701MMBD1503A

1

3

2

C7021000pF

D702MMBD1503A

1

3

2R70431.6K

R70331.6K

C7011000pF

R7011.96K

R7021.96K

U701A74HC74

2

3

5

6

144

7

1

D

CLK

Q

Q

VCC

PR

GND

CL

RespirationDriveCircuit

Page 120: Atlas Patient Monitor - Henry Schein

110 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix A Theory of Operation

Figure A-37. Respiration diff amp circuit.

Gain and FilteringThe DC content (baseline resistance) of the respiration signal is not needed, so the signal is next AC coupled, and additional gain applied before digitization. Low pass filtering is per-formed at this stage to reduce high frequency noise outside the respiration signal band-width. A baseline-reset circuit (transistor switch Q701) is used to quickly restore the high pass pole if excessive DC voltage is present, for example following a Leads-Off condition.

Figure A-38. Gain and filter circuit.

SpO2 CircuitsThe SpO2 transducer senses oxygen content of functional arteriolar hemoglobin through the use of light (red and infrared) passed through the sensor. The reflective characteristics of hemoglobin at the wavelengths used allow the pulse oximetry circuits to obtain changing saturation levels. This data is then processed to obtain the oxygen saturation percentage and pulse rate.

E

fVee

fVcc

E

fVee

E

fVee

fVcc

fVcc

E

EE

E

Resp-DC

Left-Arm

Right-Arm

D605-C

+Clamp-Clamp

U702-6

D70

3-1U70

3-2

U702-1

U702-2

U702-5D704-3

U702-3D703-3

U702-7

R7163.16K

+

-

U702B

AD7125

67

84

R7153.16K

R710464K

+

-

U703AAD712

3

21

84

R7121K

R71415.8K

D704MMBD1503A

1

3

2

R71115.8K

C707330pF

C706330pF

D703MMBD1503A

1

3

2

D705MMBD354LT1

1

3

2

R7131K

R7081.96K

+

- U702AAD712

3

21

84

R709464K

R7071.96K

C7110.1uF

R7173.16K

C720.047uF

R724196KRespiration

Diff Amp

E

E

fVee

E

fVcc

E

E

Resp-Reset

An-Resp

Q701-d

Resp-AC

Q70

1-g

U703-6

U703-5

R722316

+

- U703BAD712

5

67

84

D706MMBD1503A

1

3

2

R720100K

C714.047uF

C7123.3uF

R71951.1K

R7231Meg

Q701MMBF4393L

23

1

C7130.1uF

R721316K

R718825K

B.W. = .06Hz to 16 Hz Gain =1000B.W. = 10Hz

D605-C

Page 121: Atlas Patient Monitor - Henry Schein

Theory of Operation Appendix A

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 111

Nellcor or Nonin Medical provides the SpO2 board (Nonin only for the model 621). The SpO2 board includes amplifiers and processing, and transmits serial data to the CPU board (Waveform data, SpO2%, and pulse rate). The Atlas monitor provides electrical isolation (power and data) to the SpO2 board. Note that you must use Nonin probes with the Nonin SpO2 board, and Nellcor probes with Nellcor SpO2 board.

Page 122: Atlas Patient Monitor - Henry Schein
Page 123: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 113

Table B-1. Atlas 621N0 repair parts.

Part# Description

620001-503 MAIN PCB ASSY - LOW END

620004-502 ATLAS CPU PCB ASSY

620007-501 FRONT PANEL DISPLAY PCB ASSY.

620038 NELLCOR LABEL (CARTON)

6200-43E SERVICE MANUAL (ATLAS)

620089 BATTERY, 3V LITHIUM

620105-3 BATTERY DOOR

620119 LATCH SPO2

620125-502 MAIN CASE/HANDLE SET W/PANEL

620126-4 BEZEL SET - HEAT TRANSFER

620131-1 MAIN FOAM

620132-2 TOP FOAM

620133 BP FOAM

620141 METAL HOUSING - TOP

620142-1 METAL HOUSING-BOTTOM (LG)

620144 BRACKET SPO2

620150-1 AC/DC POWER SUPPLY

620156 PUMP

620157 STEPPER VALVE

620158 CHECK VALVE

620163 CABLE ASSY -PUMP/PNEUMATIC VLV

620165 CABLE-CONN TO MAIN BD,ECG

620167 CABLE-MAIN BD TO DISPLAY BD

620168-2 CABLE ASSY POWER SUPPLY

620170 CABLE ASSY NELLCOR

620171 CABLE ASSY SPEAKER

620172-2 CABLE ASSY AC

620178 CABLE ASSY SP02

620181-1 LABEL,BOTTOM,LOW END

620187-501 PNEUMATIC SUB ASSY

620189 4-20 X 5/16 SLT/TORX PN PL ZIN

620192-1 PNEUMATIC CONNECTOR

620193 NUT, HEX 5/16-32 X.095 PNEUM

Page 124: Atlas Patient Monitor - Henry Schein

114 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

620194 WASHER,FLT.33 X.62 X.049 PNEUM

620197 BUSHING, SPLIT NYLON

620198 FOOT

620200-501 CRT SUB ASY

620205 4-40 X .31 TX PN MC ST ZN

620214-1 TUBING, SILICONE, 1/16 .50

620215-1 TUBING, SILICONE 1/8 X1.00

620215-2 TUBING, SILICONE 1/8 X 2.125

620215-3 TUBING, SILICONE 1/8 X 7.50

620215-4 TUBING, SILICONE 1/8 X.750

620216 FITTING ““Y”” 1/8 X 1/8 X 1/8

620217 FITTING, ““T””, 1/8 X 1/16X 1/8

620377-1 NELLCOR WORKS HERE” LABEL

620377-2 NELLCOR PATENT LABEL

620378-1 ATLAS KEYPAD(BP START/CANCEL)

620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)

620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)

620378-4 ATLAS KEYPAD(4 ALARMS)

620378-5 ATLAS KEYPAD(SILENCE ALARM)

620378-6 ATLAS KEYPAD(SILENCE BELL)

620379-501 MONITOR BOX W/INSERTS

620384-2C LOW LABEL W/FREEZE (CHINESE)

620384-2E DISPLAY LABEL-LOW/FREEZE/ENG

620384-2F DISPLAY LABEL-LOW/FREEZE/FR.

620384-2G LOW LABEL W/FREEZE (GERMAN)

620384-2I LOW LABEL W/PRINTER (ITALIAN)

620384-2J LOW LABEL W/FREEZE (JAPANESE)

620384-2P LOW LABEL W/FREEZE (PORT)

620384-2S LOW LABEL W/FREEZE (SPANISH)

620385 SUB-LABEL DISPLAY

620386 FASTON TAB

620388-2 LABEL, NELLCOR SENSOR

620393 PWR SUPPLY INSULATOR LABEL

620394-1 “WASHER, SHOULDER PLATED

Table B-1. Atlas 621N0 repair parts.

Part# Description

Page 125: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 115

620403 FLAT TIE HOLDER

620432 ATLAS MONITOR CALIBRATION CERT

620494-501 ATLAS FAN KIT

620530 D CONN.LOCATOR\NELLCOR MP506

620531 CABLE ASSY,NELLCOR MP506 SEN.

620532 NELLCOR MP506 SPO2 PCB

761077-1 WIRE TIE

Table B-1. Atlas 621N0 repair parts.

Part# Description

Page 126: Atlas Patient Monitor - Henry Schein

116 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

Table B-2. Atlas 621NP repair parts.

Part# Description

620001-503 MAIN PCB ASSY - LOW END

620004-502 ATLAS CPU PCB ASSY

620007-501 FRONT PANEL DISPLAY PCB ASSY.

620013-502 PRINTER PCB

620038 NELLCOR LABEL (CARTON)

6200-43E SERVICE MANUAL (ATLAS)

620089 BATTERY, 3V LITHIUM

620105-3 BATTERY DOOR

620117 PRINTER DOOR BUTTON

620119 LATCH SPO2

620125-501 MAIN CASE/HANDLE SET

620126-4 BEZEL SET - HEAT TRANSFER

620131-1 MAIN FOAM

620132-2 TOP FOAM

620133 BP FOAM

620134-501 GEAR ASSY

620138-501 PRINTER DOOR ASSY

620139-501 PRINTER FRAME ASSE

620140-501 MAIN PRINTER ASSY

620140-502 PRINTER ASSY W/STATIC BAG

620141 METAL HOUSING - TOP

620142-1 METAL HOUSING-BOTTOM (LG)

620144 BRACKET SPO2

620150-1 AC/DC POWER SUPPLY

620156 PUMP

620157 STEPPER VALVE

620158 CHECK VALVE

620163 CABLE ASSY -PUMP/PNEUMATIC VLV

620165 CABLE-CONN TO MAIN BD,ECG

620167 CABLE-MAIN BD TO DISPLAY BD

620168-2 CABLE ASSY POWER SUPPLY

620170 CABLE ASSY NELLCOR

620171 CABLE ASSY SPEAKER

Page 127: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 117

620172-2 CABLE ASSY AC

620176 CABLE ASSY - PRINTER

620177 CABLE ASSY - PRINT HEAD

620178 CABLE ASSY SP02

620181-1 LABEL,BOTTOM,LOW END

620187-501 PNEUMATIC SUB ASSY

620189 4-20 X 5/16 SLT/TORX PN PL ZIN

620192-1 PNEUMATIC CONNECTOR

620193 NUT, HEX 5/16-32 X.095 PNEUM

620194 WASHER,FLT.33 X.62 X.049 PNEUM

620197 BUSHING, SPLIT NYLON

620198 FOOT

620200-501 CRT SUB ASY

620205 4-40 X .31 TX PN MC ST ZN

620207 NUT, M3-.5 HEX KEPS ST ZN

620214-1 TUBING, SILICONE, 1/16 .50

620215-1 TUBING, SILICONE 1/8 X1.00

620215-2 TUBING, SILICONE 1/8 X 2.125

620215-3 TUBING, SILICONE 1/8 X 7.50

620215-4 TUBING, SILICONE 1/8 X.750

620216 FITTING ““Y”” 1/8 X 1/8 X 1/8

620217 FITTING, ““T””, 1/8 X 1/16X 1/8

620377-1 NELLCOR WORKS HERE LABEL

620377-2 NELLCOR PATENT LABEL

620378-1 ATLAS KEYPAD(BP START/CANCEL)

620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)

620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)

620378-4 ATLAS KEYPAD(4 ALARMS)

620378-5 ATLAS KEYPAD(SILENCE ALARM)

620378-6 ATLAS KEYPAD(SILENCE BELL)

620379-501 MONITOR BOX W/INSERTS

620384-1C LOW LABEL W/PRINTER (CHINESE)

620384-1E DISPLAY LABEL/LOW/PRINTER-ENG

620384-1F LOW LABEL W/PRINTER (FRENCH)

Table B-2. Atlas 621NP repair parts.

Part# Description

Page 128: Atlas Patient Monitor - Henry Schein

118 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

620384-1G LOW LABEL W/PRINTER (GERMAN)

620384-1I LOW LABEL W/PRINTER (ITALIAN)

620384-1J LOW LABEL W/PRINTER (JAPANESE)

620384-1P LOW LABEL W/PRINTER (PORT)

620384-1S LOW LABEL W/PRINTER (SPANISH)

620385 SUB-LABEL DISPLAY

620386 FASTON TAB

620388-2 LABEL, NELLCOR SENSOR

620393 PWR SUPPLY INSULATOR LABEL

620394-1 WASHER, SHOULDER PLATED

620403 FLAT TIE HOLDER

620494-501 ATLAS FAN KIT

620530 D CONN.LOCATOR\NELLCOR MP506

620531 CABLE ASSY,NELLCOR MP506 Sen.

620532 NELLCOR MP506 SPO2 PCB

761077-1 WIRE TIE

Table B-2. Atlas 621NP repair parts.

Part# Description

Page 129: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 119

Table B-3. Atlas 621S0 repair parts.

Part# Description

620001-503 MAIN PCB ASSY - LOW END

620004-502 ATLAS CPU PCB ASSY

620007-501 FRONT PANEL DISPLAY PCB ASSY.

6200-43E SERVICE MANUAL (ATLAS)

620089 BATTERY, 3V LITHIUM

620105-3 BATTERY DOOR

620119 LATCH SPO2

620125-502 MAIN CASE/HANDLE SET W/PANEL

620126-4 BEZEL SET - HEAT TRANSFER

620131-1 MAIN FOAM

620132-2 TOP FOAM

620133 BP FOAM

620141 METAL HOUSING - TOP

620142-1 METAL HOUSING-BOTTOM (LG)

620144 BRACKET SPO2

620150-1 AC/DC POWER SUPPLY

620156 PUMP

620157 STEPPER VALVE

620158 CHECK VALVE

620163 CABLE ASSY -PUMP/PNEUMATIC VLV

620165 CABLE-CONN TO MAIN BD,ECG

620167 CABLE-MAIN BD TO DISPLAY BD

620168-2 CABLE ASSY POWER SUPPLY

620171 CABLE ASSY SPEAKER

620172-2 CABLE ASSY AC

620181-1 LABEL,BOTTOM,LOW END

620187-501 PNEUMATIC SUB ASSY

620189 4-20 X 5/16 SLT/TORX PN PL ZIN

620192-1 PNEUMATIC CONNECTOR

620193 NUT, HEX 5/16-32 X.095 PNEUM

620194 WASHER,FLT.33 X.62 X.049 PNEUM

620197 BUSHING, SPLIT NYLON

620198 FOOT

Page 130: Atlas Patient Monitor - Henry Schein

120 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

620200-501 CRT SUB ASY

620205 4-40 X .31 TX PN MC ST ZN

620214-1 TUBING, SILICONE, 1/16 .50

620215-1 TUBING, SILICONE 1/8 X1.00

620215-2 TUBING, SILICONE 1/8 X 2.125

620215-3 TUBING, SILICONE 1/8 X 7.50

620215-4 TUBING, SILICONE 1/8 X.750

620216 FITTING ““Y”” 1/8 X 1/8 X 1/8

620217 FITTING, ““T””, 1/8 X 1/16X 1/8

620373-501 NONIN SUB ASSEMBLY

620378-1 ATLAS KEYPAD(BP START/CANCEL)

620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)

620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)

620378-4 ATLAS KEYPAD(4 ALARMS)

620378-5 ATLAS KEYPAD(SILENCE ALARM)

620378-6 ATLAS KEYPAD(SILENCE BELL)

620379-501 MONITOR BOX W/INSERTS

620384-2C LOW LABEL W/FREEZE (CHINESE)

620384-2E DISPLAY LABEL-LOW/FREEZE/ENG

620384-2F DISPLAY LABEL-LOW/FREEZE/FR.

620384-2G LOW LABEL W/FREEZE (GERMAN)

620384-2I LOW LABEL W/PRINTER (ITALIAN)

620384-2J LOW LABEL W/FREEZE (JAPANESE)

620384-2P LOW LABEL W/FREEZE (PORT)

620384-2S LOW LABEL W/FREEZE (SPANISH)

620385 SUB-LABEL DISPLAY

620386 FASTON TAB

620388-1 LABEL, NONIN SENSOR

620393 PWR SUPPLY INSULATOR LABEL

620394-1 WASHER, SHOULDER PLATED

620403 FLAT TIE HOLDER

620494-501 ATLAS FAN KIT

761077-1 WIRE TIE

Table B-3. Atlas 621S0 repair parts.

Part# Description

Page 131: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 121

Table B-4. Atlas 621SP repair parts.

Part# Description

620001-503 MAIN PCB ASSY - LOW END

620004-502 ATLAS CPU PCB ASSY

620007-501 FRONT PANEL DISPLAY PCB ASSY.

620013-502 PRINTER PCB

6200-43E SERVICE MANUAL (ATLAS)

620089 BATTERY, 3V LITHIUM

620105-3 BATTERY DOOR

620117 PRINTER DOOR BUTTON

620119 LATCH SPO2

620125-501 MAIN CASE/HANDLE SET

620126-4 BEZEL SET - HEAT TRANSFER

620131-1 MAIN FOAM

620132-2 TOP FOAM

620133 BP FOAM

620134-501 GEAR ASSY

620138-501 PRINTER DOOR ASSY

620139-501 PRINTER FRAME ASSE

620140-501 MAIN PRINTER ASSY

620140-502 PRINTER ASSY W/STATIC BAG

620141 METAL HOUSING - TOP

620142-1 METAL HOUSING-BOTTOM (LG)

620144 BRACKET SPO2

620150-1 AC/DC POWER SUPPLY

620156 PUMP

620157 STEPPER VALVE

620158 CHECK VALVE

620163 CABLE ASSY -PUMP/PNEUMATIC VLV

620165 CABLE-CONN TO MAIN BD,ECG

620167 CABLE-MAIN BD TO DISPLAY BD

620168-2 CABLE ASSY POWER SUPPLY

620171 CABLE ASSY SPEAKER

620172-2 CABLE ASSY AC

620176 CABLE ASSY - PRINTER

Page 132: Atlas Patient Monitor - Henry Schein

122 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

620177 CABLE ASSY - PRINT HEAD

620181-1 LABEL,BOTTOM,LOW END

620187-501 PNEUMATIC SUB ASSY

620189 4-20 X 5/16 SLT/TORX PN PL ZIN

620192-1 PNEUMATIC CONNECTOR

620193 NUT, HEX 5/16-32 X.095 PNEUM

620194 WASHER,FLT.33 X.62 X.049 PNEUM

620197 BUSHING, SPLIT NYLON

620198 FOOT

620200-501 CRT SUB ASY

620205 4-40 X .31 TX PN MC ST ZN

620207 NUT, M3-.5 HEX KEPS ST ZN

620214-1 TUBING, SILICONE, 1/16 .50

620215-1 TUBING, SILICONE 1/8 X1.00

620215-2 TUBING, SILICONE 1/8 X 2.125

620215-3 TUBING, SILICONE 1/8 X 7.50

620215-4 TUBING, SILICONE 1/8 X.750

620216 FITTING “Y” 1/8 X 1/8 X 1/8

620217 FITTING, “T”, 1/8 X 1/16X 1/8

620373-501 NONIN SUB ASSEMBLY

620378-1 ATLAS KEYPAD(BP START/CANCEL)

620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)

620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)

620378-4 ATLAS KEYPAD(4 ALARMS)

620378-5 ATLAS KEYPAD(SILENCE ALARM)

620378-6 ATLAS KEYPAD(SILENCE BELL)

620379-501 MONITOR BOX W/INSERTS

620384-1C LOW LABEL W/PRINTER (CHINESE)

620384-1E DISPLAY LABEL/LOW/PRINTER-ENG

620384-1F LOW LABEL W/PRINTER (FRENCH)

620384-1G LOW LABEL W/PRINTER (GERMAN)

620384-1I LOW LABEL W/PRINTER (ITALIAN)

620384-1J LOW LABEL W/PRINTER (JAPANESE)

620384-1P LOW LABEL W/PRINTER (PORT)

Table B-4. Atlas 621SP repair parts.

Part# Description

Page 133: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 123

620384-1S LOW LABEL W/PRINTER (SPANISH)

620385 SUB-LABEL DISPLAY

620386 FASTON TAB

620388-1 LABEL, NONIN SENSOR

620393 PWR SUPPLY INSULATOR LABEL

620394-1 WASHER, SHOULDER PLATED

620403 FLAT TIE HOLDER

620494-501 ATLAS FAN KIT

761077-1 WIRE TIE

Table B-4. Atlas 621SP repair parts.

Part# Description

Page 134: Atlas Patient Monitor - Henry Schein

124 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

Table B-5. Atlas 622N0 repair parts.

Part# Description

620004-502 ATLAS CPU PCB ASSY

620007-501 FRONT PANEL DISPLAY PCB ASSY.

620016-503 MAIN PCB ASSY-MID/HIGH END

620038 NELLCOR LABEL (CARTON)

6200-43E SERVICE MANUAL (ATLAS)

620105-1 BATTERY DOOR

620105-3 BATTERY DOOR

620119 LATCH SPO2

620125-502 MAIN CASE/HANDLE SET W/PANEL

620126-5 BEZEL SET/MID PRINTED

620131-1 MAIN FOAM

620132-2 TOP FOAM

620133 BP FOAM

620141 METAL HOUSING - TOP

620142-1 METAL HOUSING-BOTTOM (LG)

620143 NUT TEMPERATURE

620144 BRACKET SPO2

620150-1 AC/DC POWER SUPPLY

620156 PUMP

620157 STEPPER VALVE

620158 CHECK VALVE

620163 CABLE ASSY -PUMP/PNEUMATIC VLV

620165 CABLE-CONN TO MAIN BD,ECG

620167 CABLE-MAIN BD TO DISPLAY BD

620168-2 CABLE ASSY POWER SUPPLY

620170 CABLE ASSY NELLCOR

620171 CABLE ASSY SPEAKER

620172-2 CABLE ASSY AC

620173 CABLE-TEMP SENSOR TO MAIN BD

620175 CABLE ASSY - FAN

620178 CABLE ASSY SP02

620181-2 LABEL,BOTTOM,MID END

620182 LABEL - RS232

Page 135: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 125

620187-501 PNEUMATIC SUB ASSY

620189 4-20 X 5/16 SLT/TORX PN PL ZIN

620192-1 PNEUMATIC CONNECTOR

620193 NUT, HEX 5/16-32 X.095 PNEUM

620194 WASHER,FLT.33 X.62 X.049 PNEUM

620197 BUSHING, SPLIT NYLON

620198 FOOT

620200-501 CRT SUB ASY

620205 4-40 X .31 TX PN MC ST ZN

620214-1 TUBING, SILICONE, 1/16 .50

620215-1 TUBING, SILICONE 1/8 X1.00

620215-2 TUBING, SILICONE 1/8 X 2.125

620215-3 TUBING, SILICONE 1/8 X 7.50

620215-4 TUBING, SILICONE 1/8 X.750

620216 FITTING “Y” 1/8 X 1/8 X 1/8

620217 FITTING, “T”, 1/8 X 1/16X 1/8

620377-1 NELLCOR WORKS HERE LABEL

620377-2 NELLCOR PATENT LABEL

620378-1 ATLAS KEYPAD(BP START/CANCEL)

620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)

620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)

620378-4 ATLAS KEYPAD(4 ALARMS)

620378-5 ATLAS KEYPAD(SILENCE ALARM)

620378-6 ATLAS KEYPAD(SILENCE BELL)

620379-501 MONITOR BOX W/INSERTS

620384-4C MID LABEL W/FREEZE (CHINESE)

620384-4E DISPLAY LABEL-MID/FREEZE/ENG

620384-4F MID LABEL W/FREEZE (FRENCH)

620384-4G MID LABEL W/FREEZE (GERMAN)

620384-4I LOW LABEL W/FREEZE (ITALIAN)

620384-4J LOW LABEL W/FREEZE (JAPANESE)

620384-4P LOW LABEL W/FREEZE (PORT)

620384-4S LOW LABEL W/FREEZE (SPANISH)

620385 SUB-LABEL DISPLAY

Table B-5. Atlas 622N0 repair parts.

Part# Description

Page 136: Atlas Patient Monitor - Henry Schein

126 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

620386 FASTON TAB

620388-2 LABEL, NELLCOR SENSOR

620393 PWR SUPPLY INSULATOR LABEL

620394-1 WASHER, SHOULDER PLATED

620395-501 REPLACEMENT BATTERY SUB ASSY

620403 FLAT TIE HOLDER

620530 D CONN.LOCATOR\NELLCOR MP506

620531 CABLE ASSY,NELLCOR MP506 SEN.

620532 NELLCOR MP506 SPO2 PCB

761077-1 WIRE TIE

Table B-5. Atlas 622N0 repair parts.

Part# Description

Page 137: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 127

Table B-6. Atlas 622NP repair parts.

Part# Description

620004-502 ATLAS CPU PCB ASSY

620007-501 FRONT PANEL DISPLAY PCB ASSY.

620013-502 PRINTER PCB

620016-503 MAIN PCB ASSY-MID/HIGH END

620038 NELLCOR LABEL (CARTON)

6200-43E SERVICE MANUAL (ATLAS)

620105-3 BATTERY DOOR

620117 PRINTER DOOR BUTTON

620119 LATCH SPO2

620125-501 MAIN CASE/HANDLE SET

620126-5 BEZEL SET/MID PRINTED

620131-1 MAIN FOAM

620132-2 TOP FOAM

620133 BP FOAM

620134-501 GEAR ASSY

620138-501 PRINTER DOOR ASSY

620139-501 PRINTER FRAME ASSE

620140-501 MAIN PRINTER ASSY

620140-502 PRINTER ASSY W/STATIC BAG

620141 METAL HOUSING - TOP

620142-1 METAL HOUSING-BOTTOM (LG)

620143 NUT TEMPERATURE

620144 BRACKET SPO2

620150-1 AC/DC POWER SUPPLY

620156 PUMP

620157 STEPPER VALVE

620158 CHECK VALVE

620163 CABLE ASSY -PUMP/PNEUMATIC VLV

620165 CABLE-CONN TO MAIN BD,ECG

620167 CABLE-MAIN BD TO DISPLAY BD

620168-2 CABLE ASSY POWER SUPPLY

620170 CABLE ASSY NELLCOR

620171 CABLE ASSY SPEAKER

Page 138: Atlas Patient Monitor - Henry Schein

128 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

620172-2 CABLE ASSY AC

620173 CABLE-TEMP SENSOR TO MAIN BD

620175 CABLE ASSY - FAN

620176 CABLE ASSY - PRINTER

620177 CABLE ASSY - PRINT HEAD

620178 CABLE ASSY SP02

620181-2 “LABEL,BOTTOM,MID END “

620182 LABEL - RS232

620187-501 PNEUMATIC SUB ASSY

620189 4-20 X 5/16 SLT/TORX PN PL ZIN

620192-1 PNEUMATIC CONNECTOR

620193 NUT, HEX 5/16-32 X.095 PNEUM

620194 WASHER,FLT.33 X.62 X.049 PNEUM

620197 BUSHING, SPLIT NYLON

620198 FOOT

620200-501 CRT SUB ASY

620205 4-40 X .31 TX PN MC ST ZN

620207 NUT, M3-.5 HEX KEPS ST ZN

620214-1 TUBING, SILICONE, 1/16 .50

620215-1 TUBING, SILICONE 1/8 X1.00

620215-2 TUBING, SILICONE 1/8 X 2.125

620215-3 TUBING, SILICONE 1/8 X 7.50

620215-4 TUBING, SILICONE 1/8 X.750

620216 FITTING ““Y”” 1/8 X 1/8 X 1/8

620217 FITTING, ““T””, 1/8 X 1/16X 1/8

620377-1 NELLCOR WORKS HERE”” LABEL

620377-2 NELLCOR PATENT LABEL

620378-1 ATLAS KEYPAD(BP START/CANCEL)

620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)

620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)

620378-4 ATLAS KEYPAD(4 ALARMS)

620378-5 ATLAS KEYPAD(SILENCE ALARM)

620378-6 ATLAS KEYPAD(SILENCE BELL)

620379-501 MONITOR BOX W/INSERTS

Table B-6. Atlas 622NP repair parts.

Part# Description

Page 139: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 129

620384-3C MID LABEL W/PRINTER(CHINESE)

620384-3E DISPLAY LABEL-MID/PRINTER/ENG

620384-3F MID LABEL W/PRINTER (FRENCH)

620384-3G MID LABEL W/PRINTER (GERMAN)

620384-3I MID LABEL W/PRINTER (ITALIAN)

620384-3J MID LABEL W/PRINTER (JAPANESE)

620384-3P MID LABEL W/PRINTER (PORT)

620384-3S LOW LABEL W/PRINTER (SPANISH)

620385 SUB-LABEL DISPLAY

620386 FASTON TAB

620388-2 LABEL, NELLCOR SENSOR

620393 PWR SUPPLY INSULATOR LABEL

620394-1 WASHER, SHOULDER PLATED

620395-501 REPLACEMENT BATTERY SUB ASSY

620403 FLAT TIE HOLDER

620530 D CONN.LOCATOR\NELLCOR MP506

620531 CABLE ASSY,NELLCOR MP506 SEN.

620532 NELLCOR MP506 SPO2 PCB

761077-1 WIRE TIE

Table B-6. Atlas 622NP repair parts.

Part# Description

Page 140: Atlas Patient Monitor - Henry Schein

130 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

Table B-7. Atlas 622S0 repair parts.

Part# Description

620004-502 ATLAS CPU PCB ASSY

620007-501 FRONT PANEL DISPLAY PCB ASSY.

620016-503 MAIN PCB ASSY-MID/HIGH END

6200-43E SERVICE MANUAL (ATLAS)

620105-3 BATTERY DOOR

620119 LATCH SPO2

620125-502 MAIN CASE/HANDLE SET W/PANEL

620126-5 BEZEL SET/MID PRINTED

620131-1 MAIN FOAM

620132-2 TOP FOAM

620133 BP FOAM

620141 METAL HOUSING - TOP

620142-1 METAL HOUSING-BOTTOM (LG)

620143 NUT TEMPERATURE

620144 BRACKET SPO2

620150-1 AC/DC POWER SUPPLY

620156 PUMP

620157 STEPPER VALVE

620158 CHECK VALVE

620163 CABLE ASSY -PUMP/PNEUMATIC VLV

620165 CABLE-CONN TO MAIN BD,ECG

620167 CABLE-MAIN BD TO DISPLAY BD

620168-2 CABLE ASSY POWER SUPPLY

620171 CABLE ASSY SPEAKER

620172-2 CABLE ASSY AC

620173 CABLE-TEMP SENSOR TO MAIN BD

620175 CABLE ASSY - FAN

620181-2 LABEL,BOTTOM,MID END

620182 LABEL - RS232

620187-501 PNEUMATIC SUB ASSY

620189 4-20 X 5/16 SLT/TORX PN PL ZIN

620192-1 PNEUMATIC CONNECTOR

620193 NUT, HEX 5/16-32 X.095 PNEUM

Page 141: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 131

620194 WASHER,FLT.33 X.62 X.049 PNEUM

620197 BUSHING, SPLIT NYLON

620198 FOOT

620200-501 CRT SUB ASY

620205 4-40 X .31 TX PN MC ST ZN

620214-1 TUBING, SILICONE, 1/16.50

620215-1 TUBING, SILICONE 1/8 X1.00

620215-2 TUBING, SILICONE 1/8 X 2.125

620215-3 TUBING, SILICONE 1/8 X 7.50

620215-4 TUBING, SILICONE 1/8 X.750

620216 FITTING “Y” 1/8 X 1/8 X 1/8

620217 FITTING, “T”, 1/8 X 1/16X 1/8

620373-501 NONIN SUB ASSEMBLY

620378-1 ATLAS KEYPAD(BP START/CANCEL)

620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)

620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)

620378-4 ATLAS KEYPAD(4 ALARMS)

620378-5 ATLAS KEYPAD(SILENCE ALARM)

620378-6 ATLAS KEYPAD(SILENCE BELL)

620379-501 MONITOR BOX W/INSERTS

620384-4C MID LABEL W/FREEZE (CHINESE)

620384-4E DISPLAY LABEL-MID/FREEZE/ENG

620384-4F MID LABEL W/FREEZE (FRENCH)

620384-4G MID LABEL W/FREEZE (GERMAN)

620384-4I LOW LABEL W/FREEZE (ITALIAN)

620384-4J LOW LABEL W/FREEZE (JAPANESE)

620384-4P LOW LABEL W/FREEZE (PORT)

620384-4S LOW LABEL W/FREEZE (SPANISH)

620385 SUB-LABEL DISPLAY

620386 FASTON TAB

620388-1 LABEL, NONIN SENSOR

620393 PWR SUPPLY INSULATOR LABEL

620394-1 WASHER, SHOULDER PLATED

620395-501 REPLACEMENT BATTERY SUB ASSY

Table B-7. Atlas 622S0 repair parts.

Part# Description

Page 142: Atlas Patient Monitor - Henry Schein

132 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

620403 FLAT TIE HOLDER

761077-1 WIRE TIE

Table B-7. Atlas 622S0 repair parts.

Part# Description

Page 143: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 133

Table B-8. Atlas 622SP repair parts.

Part# Description

620004-502 ATLAS CPU PCB ASSY

620007-501 FRONT PANEL DISPLAY PCB ASSY.

620013-502 PRINTER PCB

620016-503 MAIN PCB ASSY-MID/HIGH END

6200-43E SERVICE MANUAL (ATLAS)

620105-3 BATTERY DOOR

620117 PRINTER DOOR BUTTON

620119 LATCH SPO2

620125-501 MAIN CASE/HANDLE SET

620126-5 BEZEL SET/MID PRINTED

620131-1 MAIN FOAM

620132-2 TOP FOAM

620133 BP FOAM

620134-501 GEAR ASSY

620138-501 PRINTER DOOR ASSY

620139-501 PRINTER FRAME ASSE

620140-501 MAIN PRINTER ASSY

620140-502 PRINTER ASSY W/STATIC BAG

620141 METAL HOUSING - TOP

620142-1 METAL HOUSING-BOTTOM (LG)

620143 NUT TEMPERATURE

620144 BRACKET SPO2

620150-1 AC/DC POWER SUPPLY

620156 PUMP

620157 STEPPER VALVE

620158 CHECK VALVE

620163 CABLE ASSY -PUMP/PNEUMATIC VLV

620165 CABLE-CONN TO MAIN BD,ECG

620167 CABLE-MAIN BD TO DISPLAY BD

620168-2 CABLE ASSY POWER SUPPLY

620171 CABLE ASSY SPEAKER

620172-2 CABLE ASSY AC

620173 CABLE-TEMP SENSOR TO MAIN BD

Page 144: Atlas Patient Monitor - Henry Schein

134 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

620175 CABLE ASSY - FAN

620176 CABLE ASSY - PRINTER

620177 CABLE ASSY - PRINT HEAD

620181-2 LABEL,BOTTOM,MID END

620182 LABEL - RS232

620187-501 PNEUMATIC SUB ASSY

620189 4-20 X 5/16 SLT/TORX PN PL ZIN

620192-1 PNEUMATIC CONNECTOR

620193 NUT, HEX 5/16-32 X.095 PNEUM

620194 WASHER,FLT.33 X.62 X.049 PNEUM

620197 BUSHING, SPLIT NYLON

620198 FOOT

620200-501 CRT SUB ASY

620205 4-40 X .31 TX PN MC ST ZN

620207 NUT, M3-.5 HEX KEPS ST ZN

620214-1 TUBING, SILICONE, 1/16 .50

620215-1 TUBING, SILICONE 1/8 X1.00

620215-2 TUBING, SILICONE 1/8 X 2.125

620215-3 TUBING, SILICONE 1/8 X 7.50

620215-4 TUBING, SILICONE 1/8 X.750

620216 FITTING ““Y”” 1/8 X 1/8 X 1/8

620217 FITTING, ““T””, 1/8 X 1/16X 1/8

620373-501 NONIN SUB ASSEMBLY

620378-1 ATLAS KEYPAD(BP START/CANCEL)

620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)

620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)

620378-4 ATLAS KEYPAD(4 ALARMS)

620378-5 ATLAS KEYPAD(SILENCE ALARM)

620378-6 ATLAS KEYPAD(SILENCE BELL)

620379-501 MONITOR BOX W/INSERTS

620384-3C MID LABEL W/PRINTER(CHINESE)

620384-3E DISPLAY LABEL-MID/PRINTER/ENG

620384-3F MID LABEL W/PRINTER (FRENCH)

620384-3G MID LABEL W/PRINTER (GERMAN)

Table B-8. Atlas 622SP repair parts.

Part# Description

Page 145: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 135

620384-3I MID LABEL W/PRINTER (ITALIAN)

620384-3J MID LABEL W/PRINTER (JAPANESE)

620384-3P MID LABEL W/PRINTER (PORT)

620384-3S LOW LABEL W/PRINTER (SPANISH)

620385 SUB-LABEL DISPLAY

620386 FASTON TAB

620388-1 LABEL, NONIN SENSOR

620393 PWR SUPPLY INSULATOR LABEL

620394-1 WASHER, SHOULDER PLATED

620395-501 REPLACEMENT BATTERY SUB ASSY

620403 FLAT TIE HOLDER

761077-1 WIRE TIE

Table B-8. Atlas 622SP repair parts.

Part# Description

Page 146: Atlas Patient Monitor - Henry Schein

136 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

Table B-9. Atlas 622NP repair parts.

Part# Description

620004-502 ATLAS CPU PCB ASSY

620007-501 FRONT PANEL DISPLAY PCB ASSY.

620013-502 PRINTER PCB

620016-503 MAIN PCB ASSY-MID/HIGH END

620032-1 ETCO2 PCB ASSY

620034 ETCO2 CONNECTOR & CABLE

620038 NELLCOR LABEL (CARTON)

6200-43E SERVICE MANUAL (ATLAS)

620105-3 BATTERY DOOR

620117 PRINTER DOOR BUTTON

620119 LATCH SPO2

620125-501 MAIN CASE/HANDLE SET

620126-6 BEZEL SET/HIGH HEAT TRANSFER

620131-1 MAIN FOAM

620132-2 TOP FOAM

620133 BP FOAM

620134-501 GEAR ASSY

620138-501 PRINTER DOOR ASSY

620139-501 PRINTER FRAME ASSE

620140-501 MAIN PRINTER ASSY

620140-502 PRINTER ASSY W/STATIC BAG

620141 METAL HOUSING - TOP

620142-1 METAL HOUSING-BOTTOM (LG)

620143 NUT TEMPERATURE

620144 BRACKET SPO2

620148 GASKET CO2 EXHAUST

620149 FITTING,1/16 X 1/8-27 NPT

620150-1 AC/DC POWER SUPPLY

620156 PUMP

620157 STEPPER VALVE

620158 CHECK VALVE

620163 CABLE ASSY -PUMP/PNEUMATIC VLV

620165 CABLE-CONN TO MAIN BD,ECG

Page 147: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 137

620167 CABLE-MAIN BD TO DISPLAY BD

620168-2 CABLE ASSY POWER SUPPLY

620170 CABLE ASSY NELLCOR

620171 CABLE ASSY SPEAKER

620172-2 CABLE ASSY AC

620173 CABLE-TEMP SENSOR TO MAIN BD

620175 CABLE ASSY - FAN

620176 CABLE ASSY - PRINTER

620177 CABLE ASSY - PRINT HEAD

620178 CABLE ASSY SP02

620181-3 LABEL,BOTTOM,HIGH END

620182 LABEL - RS232

620187-501 PNEUMATIC SUB ASSY

620189 4-20 X 5/16 SLT/TORX PN PL ZIN

620192-1 PNEUMATIC CONNECTOR

620193 NUT, HEX 5/16-32 X.095 PNEUM

620194 WASHER,FLT.33 X.62 X.049 PNEUM

620197 BUSHING, SPLIT NYLON

620198 FOOT

620200-501 CRT SUB ASY

620205 4-40 X .31 TX PN MC ST ZN

620207 NUT, M3-.5 HEX KEPS ST ZN

620214-1 TUBING, SILICONE, 1/16 .50

620215-1 TUBING, SILICONE 1/8 X1.00

620215-2 TUBING, SILICONE 1/8 X 2.125

620215-3 TUBING, SILICONE 1/8 X 7.50

620215-4 TUBING, SILICONE 1/8 X.750

620216 FITTING “Y” 1/8 X 1/8 X 1/8

620217 FITTING, “T”, 1/8 X 1/16X 1/8

620377-1 NELLCOR WORKS HERE”” LABEL

620377-2 NELLCOR PATENT LABEL

620378-1 ATLAS KEYPAD(BP START/CANCEL)

620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)

620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)

Table B-9. Atlas 622NP repair parts.

Part# Description

Page 148: Atlas Patient Monitor - Henry Schein

138 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

620378-4 ATLAS KEYPAD(4 ALARMS)

620378-5 ATLAS KEYPAD(SILENCE ALARM)

620378-6 ATLAS KEYPAD(SILENCE BELL)

620379-501 MONITOR BOX W/INSERTS

620384-5C HIGH LABEL (CHINESE)

620384-5E DISPLAY LABEL-HIGH/PRINTER/ENG

620384-5F HIGH LABEL (FRENCH)

620384-5G HIGH LABEL (GERMAN)

620384-5I HIGH LABEL (ITALIAN)

620384-5J HIGH LABEL (JAPANESE)

620384-5P HIGH LABEL (PORT)

620384-5S HIGH LABEL (SPANISH)

620385 SUB-LABEL DISPLAY

620386 FASTON TAB

620388-2 LABEL, NELLCOR SENSOR

620393 PWR SUPPLY INSULATOR LABEL

620394-1 WASHER, SHOULDER PLATED

620395-501 REPLACEMENT BATTERY SUB ASSY

620403 FLAT TIE HOLDER

620411-1C PRYON CO2 CAUTION LABEL (Chinese)

620411-1E PRYON CO2 CAUTION LABEL (English)

620411-1F PRYON CO2 CAUTION LABEL (French)

620411-1G PRYON CO2 CAUTION LABEL (German)

620411-1J PRYON CO2 CAUTION LABEL (Japanese)

620411-1P PRYON CO2 CAUTION LABEL (Port)

620411-1S PRYON CO2 CAUTION LABEL (Spanish)

620524 CABLE-CO2 TO MAIN BD

620530 D CONN.LOCATOR\NELLCOR MP506

620531 CABLE ASSY,NELLCOR MP506 SEN.

620532 NELLCOR MP506 SPO2 PCB

623NP-ACCKT ATLAS ACC KIT/HIGH/NEL-W/PRNT

761077-1 WIRE TIE

Table B-9. Atlas 622NP repair parts.

Part# Description

Page 149: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 139

Table B-10. Atlas 623SP repair parts.

Part# Description

620004-502 ATLAS CPU PCB ASSY

620007-501 FRONT PANEL DISPLAY PCB ASSY.

620013-502 PRINTER PCB

620016-503 MAIN PCB ASSY-MID/HIGH END

620032-1 ETCO2 PCB ASSY

620034 ETCO2 CONNECTOR & CABLE

6200-43E SERVICE MANUAL (ATLAS)

620105-3 BATTERY DOOR

620117 PRINTER DOOR BUTTON

620119 LATCH SPO2

620125-501 MAIN CASE/HANDLE SET

620126-6 BEZEL SET/HIGH HEAT TRANSFER

620131-1 MAIN FOAM

620132-2 TOP FOAM

620133 BP FOAM

620134-501 GEAR ASSY

620138-501 PRINTER DOOR ASSY

620139-501 PRINTER FRAME ASSE

620140-501 MAIN PRINTER ASSY

620140-502 PRINTER ASSY W/STATIC BAG

620141 METAL HOUSING - TOP

620142-1 METAL HOUSING-BOTTOM (LG)

620143 NUT TEMPERATURE

620144 BRACKET SPO2

620148 GASKET CO2 EXHAUST

620149 FITTING,1/16 X 1/8-27 NPT

620150-1 AC/DC POWER SUPPLY

620156 PUMP

620157 STEPPER VALVE

620158 CHECK VALVE

620163 CABLE ASSY -PUMP/PNEUMATIC VLV

620165 CABLE-CONN TO MAIN BD,ECG

620167 CABLE-MAIN BD TO DISPLAY BD

Page 150: Atlas Patient Monitor - Henry Schein

140 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

620168-2 CABLE ASSY POWER SUPPLY

620171 CABLE ASSY SPEAKER

620172-2 CABLE ASSY AC

620173 CABLE-TEMP SENSOR TO MAIN BD

620175 CABLE ASSY - FAN

620176 CABLE ASSY - PRINTER

620177 CABLE ASSY - PRINT HEAD

620181-3 LABEL,BOTTOM,HIGH END

620182 LABEL - RS232

620187-501 PNEUMATIC SUB ASSY

620189 4-20 X 5/16 SLT/TORX PN PL ZIN

620192-1 PNEUMATIC CONNECTOR

620193 NUT, HEX 5/16-32 X.095 PNEUM

620194 WASHER,FLT.33 X.62 X.049 PNEUM”

620197 BUSHING, SPLIT NYLON

620198 FOOT

620200-501 CRT SUB ASY

620205 4-40 X .31 TX PN MC ST ZN

620207 NUT, M3-.5 HEX KEPS ST ZN

620214-1 TUBING, SILICONE, 1/16 .50

620215-1 TUBING, SILICONE 1/8 X1.00

620215-2 TUBING, SILICONE 1/8 X 2.125

620215-3 TUBING, SILICONE 1/8 X 7.50

620215-4 TUBING, SILICONE 1/8 X.750

620216 FITTING “Y” 1/8 X 1/8 X 1/8

620217 FITTING, “T”, 1/8 X 1/16X 1/8

620373-501 NONIN SUB ASSEMBLY

620378-1 ATLAS KEYPAD(BP START/CANCEL)

620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)

620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)

620378-4 ATLAS KEYPAD(4 ALARMS)

620378-5 ATLAS KEYPAD(SILENCE ALARM)

620378-6 ATLAS KEYPAD(SILENCE BELL)

620379-501 MONITOR BOX W/INSERTS

Table B-10. Atlas 623SP repair parts.

Part# Description

Page 151: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 141

620384-5C HIGH LABEL 620384-5E DISPLAY LABEL-HIGH/PRINTER/ENG

620384-5F HIGH LABEL (FRENCH)

620384-5G HIGH LABEL (GERMAN)

620384-5I HIGH LABEL (ITALIAN)

620384-5J HIGH LABEL (JAPANESE)

620384-5P HIGH LABEL (PORT)

620384-5S HIGH LABEL (SPANISH)

620385 SUB-LABEL DISPLAY

620386 FASTON TAB

620388-1 LABEL, NONIN SENSOR

620393 PWR SUPPLY INSULATOR LABEL

620394-1 WASHER, SHOULDER PLATED

620395-501 REPLACEMENT BATTERY SUB ASSY

620403 FLAT TIE HOLDER

620411-1C PRYON CO2 CAUTION LABEL (Chinese)

620411-1E PRYON CO2 CAUTION LABEL (English)

620411-1F PRYON CO2 CAUTION LABEL (French)

620411-1G PRYON CO2 CAUTION LABEL (German)

620411-1I PRYON CO2 CAUTION LABEL (Italian)

620411-1J PRYON CO2 CAUTION LABEL (Japanese)

620411-1P PRYON CO2 CAUTION LABEL (Port)

620411-1S PRYON CO2 CAUTION LABEL (Spanish)

620524 CABLE-CO2 TO MAIN BD

761077-1 WIRE TIE

Table B-10. Atlas 623SP repair parts.

Part# Description

Page 152: Atlas Patient Monitor - Henry Schein

142 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

Table B-11. Atlas 623NP repair parts.

Part# Description

620004-502 ATLAS CPU PCB ASSY

620007-501 FRONT PANEL DISPLAY PCB ASSY.

620013-502 PRINTER PCB

620016-503 MAIN PCB ASSY-MID/HIGH END

620032-1 ETCO2 PCB ASSY

620034 ETCO2 CONNECTOR & CABLE

620038 NELLCOR LABEL (CARTON)

6200-43E SERVICE MANUAL (ATLAS)

620105-3 BATTERY DOOR

620117 PRINTER DOOR BUTTON

620119 LATCH SPO2

620125-501 MAIN CASE/HANDLE SET

620126-6 BEZEL SET/HIGH HEAT TRANSFER

620131-1 MAIN FOAM

620132-2 TOP FOAM

620133 BP FOAM

620134-501 GEAR ASSY

620138-501 PRINTER DOOR ASSY

620139-501 PRINTER FRAME ASSE

620140-501 MAIN PRINTER ASSY

620140-502 PRINTER ASSY W/STATIC BAG

620141 METAL HOUSING - TOP

620142-1 METAL HOUSING-BOTTOM (LG)

620143 NUT TEMPERATURE

620144 BRACKET SPO2

620148 GASKET CO2 EXHAUST

620149 “FITTING,1/16 X 1/8-27 NPT “

620150-1 AC/DC POWER SUPPLY

620156 PUMP

620157 STEPPER VALVE

620158 CHECK VALVE

620163 CABLE ASSY -PUMP/PNEUMATIC VLV

620165 “CABLE-CONN TO MAIN BD,ECG “

Page 153: Atlas Patient Monitor - Henry Schein

Repair Parts Lists Appendix B

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 143

Part# Description

620167 CABLE-MAIN BD TO DISPLAY BD

620168-2 CABLE ASSY POWER SUPPLY

620170 CABLE ASSY NELLCOR

620171 CABLE ASSY SPEAKER

620172-2 CABLE ASSY AC

620173 CABLE-TEMP SENSOR TO MAIN BD

620175 CABLE ASSY - FAN

620176 CABLE ASSY - PRINTER

620177 CABLE ASSY - PRINT HEAD

620178 CABLE ASSY SP02

620181-3 “LABEL,BOTTOM,HIGH END “

620182 LABEL - RS232

620187-501 PNEUMATIC SUB ASSY

620189 4-20 X 5/16 SLT/TORX PN PL ZIN

620192-1 PNEUMATIC CONNECTOR

620193 “NUT, HEX 5/16-32 X.095 PNEUM “

620194 “WASHER,FLT.33 X.62 X.049 PNEUM”

620197 “BUSHING, SPLIT NYLON “

620198 FOOT

620200-501 CRT SUB ASY

620205 4-40 X .31 TX PN MC ST ZN

620207 “NUT, M3-.5 HEX KEPS ST ZN “

620214-1 “TUBING, SILICONE, 1/16.50”” “

620215-1 “TUBING, SILICONE 1/8 X1.00”” “

620215-2 “TUBING, SILICONE 1/8 X 2.125”” “

620215-3 “TUBING, SILICONE 1/8 X 7.50”” “

620215-4 “TUBING, SILICONE 1/8 X.750”” “

620216 “FITTING ““Y”” 1/8 X 1/8 X 1/8 “

620217 “FITTING, ““T””, 1/8 X 1/16X 1/8 “

620377-1 “““NELLCOR WORKS HERE”” LABEL “

620377-2 NELLCOR PATENT LABEL

620378-1 ATLAS KEYPAD(BP START/CANCEL)

620378-2 ATLAS KEYPAD(TREND/LEAD/PRINT)

620378-3 ATLAS KEYPAD(SP02/CLOCK/POWER)

Table B-11. Atlas 623NP repair parts.

Page 154: Atlas Patient Monitor - Henry Schein

144 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix B Repair Parts List

Part# Description

620378-4 ATLAS KEYPAD(4 ALARMS)

620378-5 ATLAS KEYPAD(SILENCE ALARM)

620378-6 ATLAS KEYPAD(SILENCE BELL)

620379-501 MONITOR BOX W/INSERTS

620384-5C HIGH LABEL (CHINESE)

620384-5E DISPLAY LABEL-HIGH/PRINTER/ENG

620384-5F HIGH LABEL (FRENCH)

620384-5G HIGH LABEL (GERMAN)

620384-5I HIGH LABEL (ITALIAN)

620384-5J HIGH LABEL (JAPANESE)

620384-5P HIGH LABEL (PORT)

620384-5S HIGH LABEL (SPANISH)

620385 SUB-LABEL DISPLAY

620386 FASTON TAB

620388-2 “LABEL, NELLCOR SENSOR “

620393 PWR SUPPLY INSULATOR LABEL

620394-1 “WASHER, SHOULDER PLATED “

620395-501 REPLACEMENT BATTERY SUB ASSY

620403 FLAT TIE HOLDER

620411-1C PRYON CO2 CAUTION LABEL (Chinese)

620411-1E PRYON CO2 CAUTION LABEL (English)

620411-1F PRYON CO2 CAUTION LABEL (French)

620411-1G PRYON CO2 CAUTION LABEL (German)

620411-1J PRYON CO2 CAUTION LABEL (Japanese)

620411-1P PRYON CO2 CAUTION LABEL (Port)

620411-1S PRYON CO2 CAUTION LABEL (Spanish)

620524 CABLE-CO2 TO MAIN BD

620530 D CONN.LOCATOR\NELLCOR MP506

620531 “CABLE ASSY,NELLCOR MP506 SEN. “

620532 NELLCOR MP506 SPO2 PCB

623NP-ACCKT ATLAS ACC KIT/HIGH/NEL-W/PRNT

761077-1 WIRE TIE

Table B-11. Atlas 623NP repair parts.

Page 155: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor, Service Manual 6200-43E Rev E 145

Figure C-1. Atlas Interconnect Diagram.

Page 156: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 146

Page 157: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 147

Figure D-1. Atlas model 200 main board.

AC/DC Power

Connector

Front Panel

DisplayConnector

Main PCA

Connector

Backup

Battery

RecorderBoard

Connector

CRT Board

Connector

3V Lithium

Speaker Drive

Serial

Data Out

4Vpp max.

NIBP - Page 2

Serial I/O

connector

Model 200 Serial I/O

(manufacturing testonly)

Fan

Connector

Page3

Page2

Page1

Rick Myers

Rick Myers

3/05/99620002.dsn

5-39118 JAC 3/15/99 LPP

L.Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/17/99

B See ECN worksheet

AC

minimum

loadC

Improvements for ESD

and Fast Transients

5-39456 4/27/99LPP LPP

5-39822 LPP LPP6/23/99

DMods to U2 clock line,

NVRAM pullup

(pg 3)

(pg 3)

(pg 3)

LPP5-39934 7/9/99LPP

F

Add Nellcor SpO2 cabability.

Modify RLD to reduce V-lead noise.

Improve ESU rejection.

3/05/99

Add 330uF bypass for Nellcor 506

board.G

5-44460 LPP 3/26/02 JK

JK5-44857 LPP 7/18/02

U7-wc

FE-Data

R17-1

Power-Sync

Spare-3

NIBP-15mmHg

Spare-2

FE-Data

ETCO2-Tx

SCD

SPO2-Tx

NIBP-Safety

SCD

HRESET

NIBP-OP

Video-VSync

Video-HSync

Video-VSync

Video-HSync

NIBP-PWM-ADC

NIBP-Valve-Close

NIBP-Offset-DAC

ETCO2-Rx

Batt-ID

Power-Sync

EKG-PWM-ADC

Q1-e

PIC-Clk

PIC-Data

NIBP2-PW-ADC

Q2-c

q4-d

Q2-b

Nurse-Call

LED-Latch-b

SPO2-Rx

U8-6

RS232-RX

SM

FE-Clock

U9-3

LED-Data-b

Audio-Shutdown

Rec-Data

NIBP-Data

RS232-Rx

U8-5

LED-Latch

LED-Latch

Rec-Strobe

Audio-Shutdown

Key-Data

Tx

Rec-Data-Latch

Rec-Supply-On

U9-4

Rec-Motor-Step

Rec-Clock

SP

Rec-Motor-Step

EKG-Data-Clock

RS232-Tx

Rx

U8-4

Rec-Strobe

Rec-Data

Key-Latch-n-b

Key-Clock-b

SPO2-Rx

AC

ON

-LED

U8-2

U8-1

Rec-Clock

SPI-data-in

Rec-Data-Latch

U8-3

EROM-wr

LED-On

Speaker-Audio

SCL

Key-Latch-n

Key-Clock

SPI-Data-Out

LED-Data

SPI-Clock

Key-Latch-n

LED-On

Video-Data

EKG-ADC-Clock

Video-Data

ADC-Clock

+3.3V

Vbackup

1

2

3

4

5

6

7

3 4

4

5

6

56

3

4

1 672

8

5

3

1

2

11

33

55

77

99

1111

1313

1515

1717

1919

2121

2323

2525

2727

2929

3131

3333

3535

3737

3939

4141

4343

4545

4747

4949

5151

5353

5555

5757

5959

22

44

66

88

1010

1212

1414

1616

1818

2020

2222

2424

2626

2828

3030

3232

3434

3636

3838

4040

4242

4444

4646

4848

5050

5252

5454

5656

5858

6060

9

10

8

+1

+3

+5

+7

+9

+11

+13

+2

+4

+6

+8

+10

+12

+14

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

1

2

3

4

5

6

1

2

3

3

1

2

12

12

13

11

1

2

1

2

3

1

2

3

4

5

6

7

8

13 12

1

2

R1OUT12

R2OUT9

T1IN11

T2IN10

C+1

C1-3

C2+4

C2-5

V+2

V-6

R1IN13

R2IN8

T1OUT14

T2OUT7

3

1

2

1

2

9 8

11 10

A01

A12

A23

SCL6

WC7

SDA5

3

1

2

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

J1

CON7

U1B

74HCT04

C37

0.1uF

C32

0.1uF

R22

10K

U3B

74HCT08

U1C

74HCT04

C4

330uF+

C7

330uF+ U9

TPA301

+

-

C33

0.1uF

Q3

2N7002

TP8

R21

10K

TP7

J4

Socket 30x2

U3C

74HCT08

R2

1.96K

R19

19.6K

TP18

R4

10K

J8

CON14AP

TP9

J7

CON24B

U2

74HCT595

TP10

C22

.047uF

TP17

J6

CON6

C39

.047uF

C8

.047uF

TP23

U3A

74HCT08

C36

4.7uF

+

C3

220pF

Q2

MMBT3904L

C14

.047uF

TP16

U1A

74HCT04

C20

.047uF

R15

1.96K

U3D

74HCT08

J5

CON2

R16

3.48K

C29

.047uF

BT1

BR-2/3A

C23

.047uF

TP19

TP15

TP14

TP1

J11

CON3

TP2

TP13

TP22

TP20

TP3

TP12

J10

RJ-45

R3

10K

C34

0.1uF

TP21

TP4

TP11

R1

10K

R5 1.21K

U1F

74HCT04

J3

CON2

R6 1.21K

C38

220pF

U8

SP232ACN

Q1

MMBT3906L

J2

CON2

R23

10K

U1D

74HCT04

C6

100uF+

C30

10uF

+

U1E

74HCT04

C5 .047uF

U7

AT24C02N-10SC-2.7

TP25

Q4

2N7002

R7

150

C35

4.7uF

+

TP5

R18

619

R17

19.6K

C2

.047uF

C31

0.1uF

R20

215

TP24

TP6

+5V

+5V

+5V

+5V

+3.3V

A

D

D

D

D

D

D

D

D

D D

D

D

D

D

D

DD

D

D

DD

+12V

+5V

D

D

D

D

D

D

D

D

+3.3V

D

D

+5V

D

+5V

+5V

+5V

+5V

+5V+5V

+5V

+5V

+5V

+5V

D

+3.3V

D

D

Vbackup

Rec+12V

FE-PWM-ADC

FE-ADC-Clock

FE-Data-In

+12V

+12V

Print-Temp

Rec-GND

filt+12V

ACON

NIBP-15mmHg

NIBP-Safety

NIBP-PWM-ADC

NIBP-Offset-DAC

NIBP-ADC-Clock

NIBP-Overpressure

NIBP-A/D-SelA

SpO2Out

NIBP-Valve-Close

NIBP-Pump-On

NIBP-A/D-SelB

NIBP-A/D-SelC

FE-Pwr-Sync

PIC-Clk

ac-on

+12V

+3.3V

U2-Reset

BackupBattery

AC+12V

Rec+12V

Rec-GND

PIC-Data

PIC-Vprog

Rec-clock

Rec-Data

On/Off-Key

ac-on

+5V

Speaker-Audio

FE-Data-Clock

ADC-Clock

LithMeas

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620002 G

Main Board - Model 200

C

1 6Monday, August 05, 2002

Page 158: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 148

Figure D-2. Atlas model 200 NIBP electronics.

A/D Mux

Zero Adjust

+/-20mmHg range

0mmHG = 0.5V

300mmHG = 4.0V

PWM D/A

76.8KHz

Primary

Transducer

NIBP PWM

A/D Converter

Zero

Offset

Safety

Transducer

Over Pressure

Fault Circuit

7/9/99

Rick Myers

Improvements for ESD

and Fast Transients

Add Nellcor SpO2 cabability.

Modify RLD to reduce V-lead noise.

Improve ESU rejection.

5-39822

See ECN worksheet

LPP

JAC

4/27/99

J. Bello

Z. Psenicnik

5-39934

3/17/99

LPP3/15/99

5-39456

C

3/05/99

5-39118

3/16/99

LPP

3/16/99

F

Mods to U2 clock line,

NVRAM pullup

B

Rick Myers

LPP

LPP

L.Phillips

LPP

620002.dsn

3/05/99

6/23/99LPP

D

Add 330uF bypass for Nellcor 506

board.G 7/18/02

3/26/025-44460

5-44857

LPP

LPP

JK

JK

D201-C

U208-2

U210-7

U204-7

U204-5

U203-3

U203-5

C207-1

U204-3

U204-2

U205-7

U206-6

U206-1

P202-Out-

U206-7

U206-2

U202-3

P202-2

P202-5

Q202-G

Q202-D

U202-5

U208-1

PrimaryPres

P4.25V

SafetyPres

U208-3

P201-Out

P201-6

U204-1

U208-7

U209-Out

U203-6

P202-Out+

U210-2

U210-3

U203-2

Pump+

D20

1-A

Q201-B

Valve-

Valve+

Pump-

P.75V

u207-9

+5V/2

U205-3

U207-3

P201-pwr

3

2

1

84

3

2

1

84

3

2

1

84

23

1

4

3

1

2

5

6

7

84

5

6

7

84

1

3

2

5

6

7

84

1

3

2

1

2

3

6

5

6

7

84

4

5

6

2

3

61 4

7

5

1

2

3

5

6

7

84

IN8

OUT1

GN

D2

GN

D3

GN

D6

GN

D7

3

2

1

84

5

6

7

84

1

2

3

4

5

9

10

8

12

13

11

3

2

1

84

2

1

3

5

6

3

2

1

84

8

1

2

5 67

3

4

X013

X114

X215

X312

X41

X55

X62

X74

INH6

A11

B10

C9

X3

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

C215

.047uF

U203A

LM393

+

-

U202A

MC34072

+

-

C224

1000pF

C225

.047uF

R233

3.48K

TP214

R221

3.16K

TP206

U208A

MC34072

+

-

R232

10K

Q202MMFT2N02EL

C213

.01uF

R230

10K

R242

10K

C2024.7uF

+

C222

.01uF

Q201

MMBT3904L

TP217

R231

73.2K

U205B

MC34072

+

-

TP225

C223

.01uF

U206B

MC34072

+

-

R235

3.48K

R240

10K

D202

BAV99L

U203B

LM393

+

-

R229

1.96K

R237

464K

R241

10K

D201

MMBD1503A

R243

100K

C220

.01uF

TP228

XFPM-050KPGR-P1

P201

Gain

and

Comp

U202B

MC34072

+

-

TP207

TP210

TP231

U207B

74HCT00

U210

MAX941

+

-

TP211

TP201

C201

.047uF

C212

680pF

TP237

C229

10uF+

TP232

TP240

TP204

C221

.047uF

TP234

C205

.047uF

R214

10K

C209

.047uF

C228

.047uF

TP226

R219

1.96K

C232

.047uF

R246

31.6

C211

.047uF

C216

.047uF

C226

.047uF

R215

100K

U207A

74HCT00

TP221

C204

.047uF

C227

680pF

TP222

R216

19.6K

C208

1uF+ U204B

MC34072

+

-

U201

78L05

R239

1K

R201

576

U204A

MC34072

+

-

TP235

C203

.047uF

R203

3.32K

TP224

C231

.01uF

R205

750

L201

220uH

C210

.047uF

TP212

TP208

R244

38.3K

TP213

C206

.022uF

TP215

R248

1K

R249

1K

TP220

R227

5.11K

U208B

MC34072

+

-

L202

Bead

R236

3.83K

J201

CON5

TP219

R223

21.5K

U207C

74HCT00

R222

1K

R224

1K

R228

1.96K

C230

.047uF

R225

1K

TP236

U207D

74HCT00

R211

1.96K

TP202

U205A

MC34072

+

-

R226

21.5K

R208

1.96K

FPNS-07PGR

P202

-+

C217

.047uF

C218

4.7uF+

C219

.047uF

R204

150

TP209

R218

23.7K

R202

174

R234

3.48K

R212

56.2K

R217

5.62K

C207

1uF+

U206A

MC34072

+

-

R213

237K

R209

1K

Q203

MMDF2N02E

TP216

TP227

R207

464K

TP229

R210

464K

R220

806

TP233

U209

4051

R206

1K

TP203

TP238

TP218

TP230

C214

.047uF

P+12V

P+12V

P+12V

P+12V

P+12V

+5V

+5V

P+12V

P+12V

P+12V

P+12V

P+12V

P+12V

+12V

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

P+12V

P+5V

NIBP-Offset-DAC

NIBP-Pump-On

NIBP-ADC-Clock

P+5V

P+5V

P+5V

P+.75V

NIBP-Safety

P+5V

P+5V

P+5V

NIBP-PWM-ADC

NIBP-Valve-Close

P+12V

5VRef

P+5V

NIBP-Overpressure

NIBP-15mmHg

NIBP-A/D-SelB

P+5V

+12V

+5V

P+.75V

+6V

NIBP-A/D-SelA

NIBP-A/D-SelC

LithMeas

P+5V

Print-Temp

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620002 G

NIBP Electronics

C

2 6Monday, August 05, 2002

Page 159: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 149

Figure D-3. Atlas model 200 power supply

+6V Buck

(5.68V nominal)

On/Off Switch

Page 1

7/9/99

Rick Myers

Improvements for ESD

and Fast Transients

Add Nellcor SpO2 cabability.

Modify RLD to reduce V-lead noise.

Improve ESU rejection.

5-39822

See ECN worksheet

LPP

JAC

4/27/99

J. Bello

Z. Psenicnik

5-39934

3/17/99

LPP3/15/99

5-39456

C

3/05/99

5-39118

3/16/99

LPP

3/16/99

F

Mods to U2 clock line,

NVRAM pullup

B

Rick Myers

LPP

LPP

L.Phillips

LPP

620002.dsn

3/05/99

6/23/99LPP

D

Add 330uF bypass for Nellcor 506

board.G

JK

JK

LPP

LPP

5-44460

5-44857

3/26/02

7/18/02

U3

01

-ou

t

Q3

03

-b

U301-fb

Q303-c

C311-1

Q304-e

U3

01

-osc

U301-5

U301-comp

Q305-g

u304-fb

U2-Clk

PIC-audio

Q305-s

d304-1

d304-2Q3

01

-G

C328-1

On-Off

Q302-B

IN1

OUT3

GN

D2

IN1

OUT3

GN

D2

1

3

2

1

3

2

3

1

2

3

1

2

3

1

2

3

1

2

2

1

3

4

VFB3

ISENSE5

RT/CT7

VREF14

COMP1

OUT10

PW

R-G

ND

8V

cc1

2

GN

D9

Vc

11

VIN8

FDBK7

SHTDN3

TAP6

SENS2

VOUT1

ERR5

ClkIn/Osc1/RB52

TC5/TOCK15

RC37

Vpp/MCLR/RB34

Clkout/Osc2/RB43

RC46

Vd

d1

Vss

14

RC28

RC19

RC010

RB211

RB112

RB013

2

1

3

4

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

R313

10

U302LM2940CT-5.0

TP312

U303LF33CV

C305

.01uF

R309

10K

C316

10uF+

D304

MMBD354LT1

D301

BAV99L

C3234.7uF

+

C320

.047uF

Q306

2N7002

C3244.7uF

+

TP308

C306

330uF+

R310

1.96K

Q304

MMBT3904L

C314

330uF+

C319100uF

+

C307

.047uF

TP315

TP301

TP304

R302

100K

C322

.047uF

R316

100

C302

1uF+

R301

51.1K

R314

100

Q302

MMBT3904L

TP306

TP302

TP313

C304

330uF+

L302

47uH

Q303

MMBT3904L

C303

.01uF

Q305

MTP23P06V

TP309

U301

UC3843AC311

2200pF

TP317

R305

100K

TP316

U304

LP2951CD-3.3

TP305

R318

10K

R307

7.5K

R320 1.62K

R312

1.96K

D303

MBRS340

R304

127K

C321

.047uF

TP26

R311

10K

U305

D620361-MX10000

TP303

C325

.047uF

R303

10K

R306

10K

C315

1uF+

TP320

Q301

MTP23P06V

C313

.047uF

TP27

TP321

R319 19.6K

C317

.047uF

TP310

C310

2200pF

TP318

R308

27.4K

L301

47uH

TP319

C326

.047uF

C301

1000uF

+

TP307

C327

.047uF

C309

.047uF

C328

1uF+

D

D

D

D D

D

D

D

D

D

D

D

ACON

5Vref

+5V

+6V

+3.3V

filt+12V

+12V

Vb

VBackup

BackupBattery

PIC-Clk

Speaker-Audio

ADC-Clock

U2-Reset

PIC-Vprog

Rec-Data

Rec-Clock

On/Off-Key

PIC-Data

AC+12V

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620002 G

Power Supply - DC/DC

C

3 6Monday, August 05, 2002

Page 160: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 150

Figure D-4. Atlas Power isolation /SpO2 interface.

Isolation

Barrier

Isolated SpO2Circuits

Grounded SpO2Circuits

SpO2 ESD

Ground

Nellcor SpO2Connector

Nonin SpO2Connector

7/9/99

Rick Myers

Improvements for ESD

and Fast Transients

Add Nellcor SpO2 cabability.

Modify RLD to reduce V-lead noise.

Improve ESU rejection.

5-39822

See ECN worksheet

LPP

JAC

4/27/99

J. Bello

Z. Psenicnik

5-39934

3/17/99

LPP3/15/99

5-39456

C

3/05/99

5-39118

3/16/99

LPP

3/16/99

F

Mods to U2 clock line,

NVRAM pullup

B

Rick Myers

LPP

LPP

L.Phillips

LPP

620002.dsn

3/05/99

6/23/99LPP

D

Add 330uF bypass for Nellcor 506

board.G 7/18/02

3/26/02 JK

JK

LPP

LPP

5-44460

5-44857

T401-8

U402-1

C409-1

T401-4

T401-1

Q40

1-g

U402-sen

iso401-a

Q40

2-e

Q401-s

U401-1

U401-2

U401-7

sSpO2tx

Q403-e

sSpO2tx

U401-5

U402-e

U402-ref

U402-ct

U402-rt

iso402-a

U403-7

U401-3

C408-2

iso401-b

opto-fb

u411-6

C421-1

f+V

f-V

1

2

23

1

4

1

2

3

4

5

6

7

84

3

2

1

84

IN8

OUT1

GN

D2

GN

D3

GN

D6

GN

D7

+1

+3

+5

+7

+9

+11

+13

+2

+4

+6

+8

+10

+12

+14

1

3

2

VIN8

FDBK7

SHTDN3

TAP6

SENS2

VOUT1

ERR5

IN2

OUT1

IN3

IN6

IN7

GN

D5

1 6

2

5

4

V-1

V+2

VREF16

VIN

15

COMP9

+SENSE4

-SENSE5

SHTDWN10

RT6

CT7

CA12

EA11

CB13

EB14

OSCOUT3

GN

D8

3

1

2

5

8

1

2

3

4

3

1

22

3

8

6

5

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

C423

1000pF

C43110uF

+

TP424

J403

Tab-.187

C432

10uF

+

TP402

R405

215

C409

470pf

C404

.047uF

TP408

R414

6.19K

C411

2200pF

TP406

TP419

TP452

C401

.047uF

TP421

TP413

Q401

MTD3055V

J401

CON4

C406

100uF+

C418

4.7uF

+

TP412

C429

.047uF

C437

330uF+

TP407

C427

.047uF

C415

1uF+

C416

.047uF

R415

100

U401B

MC34072

+

-

R419

215

TP409

TP422

C433

470pf

R417

10K

C407

100uF

+R412

511

R404

316K

U401A

MC34072

+

-

TP401

U407

78L05

D401

MBRS130T3

TP420

TP415

C405

100uF+

R421

10K

TP404

D403

MBRS130T3

C43410uF

+

L401

220uH

L402

220uH

TP468

C403

.047uF

TP405

J402

CON14AP

C402

.047uF

R407

10

R411

5.11K

C420

.047uF

C430

.047uF

R403

1K

D405

BAV99L

U403

LP2951C

TP416

R409

5.11K

R401

10K

C417

680pf

C41910uF

+

TP411

C424

.047uF

R408

100

R418

5.11K

C410

.01uF

TP423

R406

0.2

C413

.047uF

U404

79L05

C435

10uF

+

C414

.047uF

C422

.047uF

R410

10K

TP403

U410

4N25

TP414

U402

LM3524DM

Q402

MMBT3906L

C41210uF

+

C408

.01uf

T401

IsoXfmr

R402

10K

Q403

MMBT3904L

R420

10K

R416

10K

U411

HCNW4503

TP417

C42810uF

+

C421

1uF

+

S

S

S

S

iso+5Vdig

S

S

S

S

S

S

S

EED

ED

ED

S

SS

S

S

S

S S

S

SS

S SS

S

S

SS

S S

S S

S

FE-Pwr-Sync

SpO2Out

+5V

filt+12V

+12V

s+5V

fVcc

fVcc

f+5V

+5V

s+5Vs+5V

fVcc

SpO2-Reset

s+5V

iso+5Vdig

s-5V

iso+5Vdig

s-5V

fVee

fVcc

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620002 G

Isolated Power and SpO2 interface

C

4 6Monday, August 05, 2002

Page 161: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 151

Figure D-5. Atlas model 200 ECG amp.

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

0.1%

Input Buffers

Gain = 9.26

Wilson

Network

Lead Select

Diff Amp

Gain = 1

High Pass (0.05Hz or 0.5Hz)

Low Pass (150Hz)

Gain Stage

Gain = 74

RLD Amp

A/D Inputs

Leads Off

Shield0.1% 0.1%

U506 U508U505U502 U504U501 U507U503

V-Lead Defib Protect,

Diodes internal to U504

protect other inputs.

No Load,

Allows RLD switch

to V-Lead, not used.

ESU filter

7/9/99

Rick Myers

Improvements for ESD

and Fast Transients

Add Nellcor SpO2 cabability.

Modify RLD to reduce V-lead noise.

Improve ESU rejection.

5-39822

See ECN worksheet

LPP

JAC

4/27/99

J. Bello

Z. Psenicnik

5-39934

3/17/99

LPP3/15/99

5-39456

C

3/05/99

5-39118

3/16/99

LPP

3/16/99

F

Mods to U2 clock line,

NVRAM pullup

B

Rick Myers

LPP

LPP

L.Phillips

LPP

620002.dsn

3/05/99

6/23/99LPP

D

Add 330uF bypass for Nellcor 506 board.

G 5-44857

5-44460 LPP

LPP

3/26/02

7/18/02

JK

JK

U501-6

U502-3

aVR

aVLaVF

LL

LL

LL

V+

RA

RA

ecg-hp

U501-2

U503-5

R511-1

R513-1

R515-1

Left-Arm

Left-Leg

V-Lead

Right-Leg

U501-3

Q504-s

Q504-g

Q504-d

U502-2

V-

U508-5

U508-6

C514-2

C503-1

C502-1

C505-1

C539-1

C537-1

U50

8-1

diff-out

mux+

u509-4

mux-

LA

LA

U502-6

U508-2

U503-2

diff-

U502-5

LA

U508-3

diff+

C541-1

C501-1Right-Arm

C504-1

U501-5C538-1

C540-1

Q50

1-S

RL-mux

R509-1

Q501-G

5

6

7

84

3

2

1

84

3

1

23

1

2

3

2

1

84

5

6

7

84

5

6

7

84

4

3

1

25

1

3

2

3

1

2

1

2

3

4

5

6

S13

IN11

S214

IN216

S311

IN39

S46

IN48

V+13

V-4

GND5

D12

D215

D310

D47

3

2

1

84

5

6

7

84

5

6

7

84

3

2

1

84

3

2

1

84

3

1

2

X013

X114

X215

X312

X41

X55

X62

X74

INH6

A11

B10

C9

X3

X013

X114

X215

X312

X41

X55

X62

X74

INH6

A11

B10

C9

X3

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

C505

330pF

C520

.047uF

R517

10K

R559

22Meg

TP542

R555

30.1K

C538

220pF

C525

.047uF

C530

.047uF

TP505

C506

100pF

R556

10K

C526

.047uF

U507B

TL072

+

-

TP539

U507A

TL072

+

-

N501

LAMP NEON

C528

.047uF

R544

10K

Q504

2N7002

C532

.047uF

R501

19.6K

TP559

R563

73.2K

C501

330pF

C527

.047uF

R547

10K

TP538

R508

10K

C531

.047uF

R549

110K

C536

.01uF

TP524

TP540

C533

.047uF

R552

1K

TP530

TP518

R560

22Meg

TP509

C529

.047uF

R551

73.2K

R509

22Meg

TP551

N502

LAMP NEON

R526

10K

TP517

TP533

R502

19.6K

TP521

C517

.01uF

C544

1000pF

Q506

2N7002

C504

330pF

R510

10K

U501A

TL072

+

-

C539

220pF

TP562

TP513

R519

10K

C509

100pF

TP511

TP558

R562

73.2K

U502B

TL072

+

-

R520

1.21K

TP543

U508B

AD712

+

-

R511

22Meg

R548

1Meg

N503

LAMP NEON

C515

3.3uF

TP534

TP550

R550

19.6K

R557

22Meg

TP514

R564

73.2K

TP560

R503

19.6K

TP549

TP541

TP515

C542

220pF

U509

LMC7101

-

+

TP503

D505

MMBD1503A

TP531

R512

10K

TP537

R567

NL

TP527

C535

4.7uF

+

TP544

TP512

R561

73.2K

C534

4.7uF+

C523

.047uF

Q502

NL

R521

10K

TP519

C519

.047uF

R545

10K

TP545

R513

22Meg

TP510

TP523

R523

10K

R553

100K

TP536

J501

CON6 TP504

C503

330pF

C508

100pF

C540

220pF

U504

DG202CSE

R565

121K

R524

1.21K

TP508

R515

22MegN504

LAMP NEON

TP535

R518

1.21K

TP520

R514

10K

R504

19.6K

U503A

TL072

+

-

R522

1.21K

C543

.047uF

TP522

TP547

TP557

C510

220pF

TP526

U501B

TL072

+

-

U503B

TL072

+

-

C511

220pF

C537

220pF

N505

LAMP NEON

C512

220pF

C513

220pF

TP507

U508A

AD712

+

-

R516

10K

C507

100pF

U502A

TL072

+

-

R505

19.6K

R530 10K

C541

220pF

C502

330pF

R566

73.2K

R531 10K

TP532

C545

1000pF

C546

NL

R533 10K

R558

22Meg

R527

1K

TP501

R535 10K

C514

0.1uF

TP506

R536 10K

TP525

Q501

NL

R528

51.1K

C516

.047uF

R537 10K

TP552

R525

10K

TP516

R532 10K

TP548

C518

.047uF

R529 10K

R534 10K

C522

.047uF

C521

.047uF

TP529

U505

4051

R546

10K

C524

.047uF

TP528

U506

4051

fVcc

fVcc

fVee

fVcc

fVee

fVee

fVcc

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

S

S

S

S

S

E

E

E

E

E

E

E

E

E

E

E

E

E

E

E

EE E

E EE E

E

E

E

E

E EE

E E

E

fVee

fVee

fVee

fVee

fVee

fVcc

fVee

fVee

fVee

fVee

fVee

fVee

fVee

fVcc

fVcc

fVcc

fVcc

fVcc

fVcc

fVcc

fVcc

fVccfVcc

E

Mux-LdS-A

Sw-MonBw

Mux-LdS-B

Mux-LdS-C

RA

LA

LL

V+

VLdsOff

VLdsOff

VLdsOff

VLdsOff

VLdsOff

f+1.24V

f+5V

vRL

Sw-RLD-LL

An-ECG

Sw-RLD-LA

fVcc

fVee

Sw-RLD-RA

Sw-RLD-RL

Sw-RLD-V

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620002 G

ECG Amp

C

5 6Monday, August 05, 2002

Page 162: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 152

U601

PWM

A/DConverter

U602

781uSec

-5V

(U604-10)

Integrator

Input

A/D Mux

U603

+5V

(U604-8)

Serial/Parallel

Control Data

PWM-Out

Comparator

Inputs

PWM-timer

U601

Isolation

Barrier

U603

52uSec

Analog In

U602

U604

7/9/99

Rick Myers

Improvements for ESD

and Fast Transients

Add Nellcor SpO2 cabability.

Modify RLD to reduce V-lead noise.

Improve ESU rejection.

5-39822

See ECN worksheet

LPP

JAC

4/27/99

J. Bello

Z. Psenicnik

5-39934

3/17/99

LPP3/15/99

5-39456

C

3/05/99

5-39118

3/16/99

LPP

3/16/99

F

Mods to U2 clock line,

NVRAM pullup

B

Rick Myers

LPP

LPP

L.Phillips

LPP

620002.dsn

3/05/99

6/23/99LPP

D

Add 330uF bypass for Nellcor 506

board.G

JK

JK

5-44460

5-44857

LPP

LPP

3/26/02

7/18/02

U601-1

U6

03

ou

t

Mux-A/D-B

U6

02

-7

U601-2

U604-4

U6

02

-2

U6

02

-5

iso601-a

Mux-A/D-C

Mux-A/D-A

U601-3

iso602-a

U6

04

-8

U601-7

Q6

01

-e

U604-6

D601-2

U604-10

U605-out

iso604-a

iso603-a

u6

04

-3

U602-3

Sw-DiagBw

U604-2 U613-6U6

04

-1

U612-6

U611-6U6

04

-5

U605-12

U610-6

SW-RL-V

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

13 12

12

2

3

8

6

5

2

3

7

5 6

4 1

8

2

3

8

6

5

3

1

2

2

3

8

6

5

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

5

6

7

84

56

9 8

11 10

2

3

8

6

5

3

2

1

84

3

2

1

84

1

3

2

5

6

7

84

34

X013

X114

X215

X312

X41

X55

X62

X74

INH6

A11

B10

C9

X3

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

TP615

TP608

TP622

U606

74HCT595

U604F

74HCT04

TP601

C637

1000pF

TP602

TP609

U604A

74HCT04

R623

46.4K

R604

10K

C624

.047uF

R603

46.4K

C641

0.1uF

C634

220pF

C636

100pF

R601

10K

R602

73.2K

TP618

R605

3.48K

R607

464K

C632

.047uF

TP625

R608

1K

TP620

U611

HCNW4503

C635

220pF

U602

LM311

+

-

U613

HCNW4503

TP610

Q601MMBT3904L

U612

HCNW4503

TP604

R611

6.19K

C629

.047uF

TP611

R610

511

U605

74HCT595

R613

6.19K

U607B

LM393

+

-

U604C

74HCT04

C603

680pF

TP617

R621

215

R627

5.11K

U604D

74HCT04

R615

6.19K

TP613

TP603

C6314.7uF

+

R622

46.4K

C609

4.7uF+

U604E

74HCT04

TP612

TP629

U610

HCNW4503

TP606

C601

1000pFTP619

C625

.047uF

R628

10K

U601A

MC34072

+

-

R626

10K

TP616

C626

.047uF

C627

.047uF

TP626

TP614

R625

10K

R617

2.15K

U607A

LM393

+

-

C628

0.1uF

TP605

C642

0.1uF

D601

MMBD1503A

TP627

C623

.047uF

C633

100pF

TP623

C621

0.1uF

C614

4.7uF

+

TP630

C622

.047uF

TP628

U601B

MC34072

+

-

U604B

74HCT04

TP624

R624

5.11K

R619

619

TP621

U603

4051

TP607

R606

3.48K

R620

619

E

E

f+5V

f+5V

f+5V

ED

+5V

ED

E

E

fVee

E E

fVcc

ED

E

f+5V

fVcc

E

E

+5V

f+5V

E

E

E

ED

E

E

fVcc

iso+5Vdig

fVcc

E

ED

E

fVee

fVee

fVcc

fVcc

fVcc

iso+5Vdig

iso+5Vdig

ED

iso+5Vdig

iso+5Vdig

EDiso+5Vdig

ED

ED

ED

fVcc

fVee

E E

fVee

E E

E

fVee

ED

ED

f+5V

f+5V

ED

ED

f+1.24V

An-ECG

LL

Mux-LdS-B

LA

Sw-RLD-RA

FE-PWM-ADC

FE-ADC-Clock

Mux-LdS-A

RA

V+

Mux-LdS-C

Sw-RLD-LA

vRL

fVcc

iso+5Vdig

f+1.24V

Sw-MonBw

FE-Data-In

FE-Data-Clock

+5V

+5V

fVee

f+5V

f+1.24V

Sw-RLD-LL

SpO2-Reset

Sw-RLD-RL

Sw-RLD-V

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620002 F

ECG A/D and Interface

C

6 6Monday, August 05, 2002

Page 163: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 153

Figure D-6. Atlas ECG A/D interface

CPU PCA SW Debug Port

(aka BDM Connector)

Test Points

1 - Visual History Buffer Flush Status ('823 output)

2 - Reset Output ('823 input)

3 - Ground

4 - BDM Clock ('823 input)

5 - Ground

6 - Visual History Buffer Flush Status ('823 output)

7 - Reset Input ('823 Output)

8 - BDM Data Input ('823 Input)

9 - Vcc

10 - BDM Data Output ('823 Output)

Main PCA Connectors

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

5-39173 JAC 3/18/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/19/99

3/19/99

3/19/99

BComponent change forfrequency modulation

5-39353 JJC 4/15/99 ZIP

Change Reset IC U3,

No Load C40C

Upgrade to larger SDRAMD

5-39830 LPP LPP6/24/99

5-44759 LPP 6/20/02 JK

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

GND

1

1

1 1

1

1

1

1

1

1

1

1

1

1

1

1

1

11

33

55

77

99

1111

1313

1515

1717

1919

2121

2323

2525

2727

2929

3131

3333

3535

3737

3939

4141

4343

4545

4747

4949

5151

5353

5555

5757

5959

22

44

66

88

1010

1212

1414

1616

1818

2020

2222

2424

2626

2828

3030

3232

3434

3636

3838

4040

4242

4444

4646

4848

5050

5252

5454

5656

5858

6060

1

1

1

1

1 2

3 4

5 6

7 8

9 10

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

TP75

TP77

TP60 TP61

TP78

TP62

TP59

TP64

TP63

TP70

TP65

TP69

TP66

TP76

TP58

TP68

TP71

JP8

HEADER 30x2

TP72

TP67

TP73

TP74

JP5

HEADER 5X2

VDDH

DSDO

ADC-Clock

SPI-data-in

TA_n

NIBP-15mmHg

PC6

CLKOUT

SpO2-Tx

Main-Supply-On

FE-Data

DSDI

SCD

Video-Horizontal-Sync

SPI-clock

NIBP-PWM-ADC

SpO2-Rx

Spare-1

On-Standby-Key

Video-Clock-3

EKG-PWM-ADC

RS423-CTS

SPI-data-out

PA4

ETCO2-Rx

NIBP2-PW-ADC

Vbackup

NIBP-Valve

Spare-3

RD/WR_n

PA14

SPIMISO

Nurse-Call

Key-Latch

Main-Power-Sync

Spare-2

NIBP-Overpressure

SCL

Batt-ID

ETCO2-Tx

PB16

PC10

VFLS1

+3.3V_unfiltered

Recorder-Data

PC13

HRESET_n

Video-Vertical-Sync

Recorder-Data-Latch

Burst_n

TS_n

AC-On

RS423-Tx

Recorder-Strobe

PA7

SRESET_nVFLS0

HRESET

Rec-Paper-Out

NIBP-Data

PC12

PA6

SPISEL_n

LED-Latch

NIBP-Offset-DAC

Video-Data

SPIMOSI

DSCK

+3.3V_unfiltered

Speaker-Audio

Recorder-Motor-Step

FE-Clock

PA5

PA15

NIBP-Fault

RS423-Rx

Recorder-Clock

SPICLK

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620005 D

Atlas CPU Subsystem

C

1 6Monday, August 05, 2002

Page 164: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 154

Figure D-7. Atlas CPU subsystem.

Audio DAC Resistors

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

3/18/99JAC5-39173

3/19/99

3/19/99

3/19/99

L. Phillips

Z. Psenicnik

J. Bello

LPP

B ZIP4/15/99JJC5-39353Component change forfrequency modulation

Change Reset IC U3,

No Load C40C

D Upgrade to larger SDRAM

5-39830 LPP 6/24/99 LPP

5-44759 LPP 6/20/02 JK

A26

A27

A28

A29

GPL1

CS_n2

VIDEO1

D6

VIDEO6

D5

VIDEO5

VIDEO4

VIDEO2

D4

VIDEO3

VIDEO7

D7

D3

VIDEO0

D2

D1

D0

S2

S4

S7

S6

S5

S0

S3

S1

S2

S7

S4

S1

S3

S0

S6

S5

IRQ_n1

IRQ_n2

SPIMOSI

SPICLK

CONFIG_DONE

A25

NSTATUS

1

12

GN

D-5

5

GCLK-1212

nC

E4

DC

LK89

CO

NFI

G_D

ON

E72

GCLK-1313

P1515

GN

D-2

020

VC

C-2

121

P1616

P1717

P1414

TMS-1818

P2424

P2525

P2626

P2727

P2828

P5050

GN

D-8

787

VC

C-6

6

P2929

P3030

P3131

P3232

GN

D-3

737

MSE

L22

VC

C-7

171

P33

P77

P1919

P5252

P5555

P5656

nC

ON

FIG

36

VC

C-5

454

GN

D-5

353

P6868

P4141

P4040

P3535

P3434

GN

D-7

070

P3333

nST

ATU

S39

VC

C-8

888

TDO-5151

TDI-1010

DA

TA86

CLKUSR-6969

P11

P22

VC

C-3

838

TCK-2323

P88

P99

P1111

nCEO-4949

P4242

P4343

P4444

P4545

P4646

P4747

P4848

P100100

P9999

P9898

P9797

P9696

P9595

P9494

P9393

P9292

P9090

P8484

P8282

P8080

P7979

P7676

P7575

P7474

RDYnBSY-6767

P6666

P6565

GCLK-6363

GCLK-6262

P6161

P6060

P5959

P5858

P5757

DEV_CLRn-9191

INIT_DONE-6464

DEV_OE-8585

nRS-8383

nWS-8181

nCS-7777

Cs-7878

P7373

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

R69 12.4K

R125

1.58K

R68 24.9K

R70 6.19K

R71 3.09K

R73 787

TP80

C121

330pF

U7

EPF6016A

R72 1.58K

R126

33

R66 100K

R67 49.9K

VDDH

SDACK2_n

DREQ2_n

SDACK1_n

DREQ1_n

A[6:31] GPL[0:7] CS_n[0:7]

VIDEO[0:7]

D[0:31]

VSYNC

HSYNC

Speaker-Audio

IRQ_n[0:7]

Blank

SPIMOSI

SPISEL_n

Video-Data-x

VSYNC-x

HSYNC-x

NIBP-Data-x

Recorder-Strobe-x

Recorder-Data-Latch-x

Recorder-Clock-x

Recorder-Data-x

PC6

Recorder-Motor-Step-x

NIBP-Overpressure-x

NIBP-15mmHg-x

TIN1

FE-Data-x

TIN2

ADC-Clock-x

FE-Clock-x

76.8KHz

TIN3

NIBP-Fault-x

SPI-data-in-x

SPI-clock-x

SPI-data-out-x

LED-Latch-xKey-Latch-x

NIBP-Offset-DAC-x

PA14

PC10

PB16

PA7

PA6

PC11

PC12

Video-Clock-3

PA5

SPIMISO

RD/WR_n

Video-Clock-25

Field

SPICLK

CLKOUT

PA15

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620005 D

FPGA

C

2 6Monday, August 05, 2002

Page 165: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 155

Figure D-8. Atlas FPGA.

MODCK (0,0) Selects 32KHz as main oscillator

RSTCONF = 0 allows '823 to sample data bus during HRESET

PWM Input Timer Signals

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

5-39173 JAC 3/18/99 LPP

3/19/99

3/19/99

3/19/99

L. Phillips

Z. Psenicnik

J. Bello

B

frequency modulationComponent change for 5-39353 JJC 4/15/99 ZIP

Change Reset IC U3,

No Load C40C

Upgrade to larger SDRAMD

5-39830 LPP 6/24/99 LPP

5-44759 LPP 6/20/02 JK

IRQ_n0

IRQ_n1

IRQ_n2

IRQ_n3

IRQ_n4

IRQ_n5

IRQ_n6

IRQ_n7

IP_B6

IP_B7

IP_B3

IP_B2

IP_B4

IP_B5

GPL4

GPL5

IRQ_n0

12

5

1

2

3

4

6

7

8

9

10

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

1

2

3

4 5

6

7

81

2

12

12

12

12

1

2

3

4 5

6

7

8

12

12

12

5

1

2

3

4

6

7

8

9

10

12

5

1

2

3

4

6

7

8

9

10

12

1

2

3

4 5

6

7

8

5

1

2

3

4

6

7

8

9

10

1

2

3

4 5

6

7

8

12

5

1

2

3

4

6

7

8

9

10

12

5

1

2

3

4

6

7

8

9

10

12

1

2

3

4 5

6

7

8

12

1

2

3

4 5

6

7

8

12

1

2

3

4 5

6

7

8

12

12

12

5

1

2

3

4

6

7

8

9

10

1

2

3

4 5

6

7

8

1

2

3

4 5

6

7

8

1

2

3

4 5

6

7

8

12

12

12

12

12

12

1

2

3

4 5

6

7

8

12

12

12

12

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

C70330pF

R86

10K

C

R151

215

C124330pF

C72330pF

C71330pF

C123330pF

C78330pF

R1521.58K

R108

1.58K

C79330pF

C125330pF

C81330pF

R105

1.58K

C80330pF

C89330pF

R104

NL

C86330pF

C87330pF

R107

NL

C88330pF

R133NL

C90330pF

R1293.09K

C93330pF

C91330pF

R88

100

C92330pF

C94330pF

C97330pF

R1313.09K

C95330pF

C96330pF

R82

100

R1321.58K

C105330pF

C12222pF

C103330pF

R83

10K

C

C102330pF

R76

10K

C

C104330pF

R87

100

R103

10K

C

R85

100

C66330pF

R16

10K

C

C67330pF

R91 10K

C

C68330pF

R77

100

C69330pF

R1276.19K

R80

100

C76330pF

R74

100

C77330pF

C75330pF

C74330pF

R49

10K

C

R1303.09K

R90

100

R1286.19K

R78

100

R81

100

C57330pF

C56330pF

C55330pF

C54330pF

C63330pF

C64330pF

R1341.58K

R120

NL

R116

100

C65330pF

C62330pF

C126330pF

C73330pF

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

SPI-data-out-xSPI-data-out

Video-Vertical-Sync

Video-Horizontal-Sync HSYNC-x

VSYNC-x

DSDI

SCL

SCD

Recorder-Clock-x

Recorder-Strobe-x

Recorder-Data-Latch-x

Recorder-Data-x

Recorder-Clock

Recorder-Data

Recorder-Data-Latch

Recorder-Strobe

VFLS1

VFLS0

WAIT_B_n

IP_B[2:7]

I2CSCLSCL

SMRXD2

SMTXD2SpO2-Tx

SpO2-Rx

ETCO2-Tx

ETCO2-Rx SMRXD1

SMTXD1

RXD2

TXD2

RS423-Rx

RS423-Tx

Nurse-Call

PC9

Key-Latch-xKey-Latch

SCD I2CSDA

NIBP-Offset-DAC

Rec-Paper-Out

RS423-Rx

SpO2-Rx

FE-Clock

FE-Data

ADC-Clock

FE-Data-x

FE-Clock-x

ADC-Clock-x

SPI-clock-xSPI-clock

LED-Latch-x

SPI-data-in SPI-data-in-x

Video-Data-xVideo-Data

SPI-data-in

NIBP-Data-xNIBP-Data

Batt-ID

NIBP-Fault-xNIBP-Fault

NIBP-15mmHg

NIBP-Overpressure

ETCO2-Rx

AC-On

PA6NIBP-Valve

NIBP-Offset-DAC-x

PB18

LED-Latch

PC5

PC7

Spare-1

Spare-2

Batt-ID

EKG-PWM-ADC

MODCK1

MODCK2

PB17

PC8

PB19

Rec-Paper-Out

RS423-CTS

AC-On

TIN3NIBP2-PW-ADC

Spare-3

Burst_n

BG_n

TS_n

SPKROUT

NIBP-Fault

FRZ

PC11

DREQ1_n

GPL[0:7]

NIBP2-PW-ADC RS423-CTS

TMS

PB16

PC13

SRESET_n

PA4

PA7

PA15

PA5

On-Standby-Key

DREQ2_n

Spare-1

Spare-3

PC10

NIBP-PWM-ADC

PC12

76.8KHz

TEXP

On-Standby-Key

Main-Power-Sync

Main-Supply-On

EKG-PWM-ADC TIN1

TIN2NIBP-PWM-ADC

NIBP-15mmHg-x

Recorder-Motor-Step Recorder-Motor-Step-x

NIBP-Overpressure-xNIBP-Overpressure

NIBP-15mmHg

PC4

TEA_n

TA_n

BB_n

BR_n

TRST_n

ALE_B

RSTCONF_n

BI_n

DSCK

IRQ_n[0:7]

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620005 D

I/O Filters

C

3 6Monday, August 05, 2002

Page 166: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 156

Figure D-9. Atlas 200/210/220 I/O filters.

AMD N/C: 9, 10, 13, 14

AMD RY/BY#: 15

----------------

MICRON N/C: 9, 10, 15

MICRON Vpp: 13

Boot Configuration Latch

Active during power-on

Boot Configuration Pull-Up: 0 1 0 0 1 0 0 1 1 1 1 0 0 0 0 0

(see page 4-10)

0: internal arbitration

1: MSR(ip) = 0, interrupt prefix is 0x0000

0: reserved

0: memory controller is active after reset

1,0: 16-bit boot device

0: reserved

1,1: IMMR base is 0xfff0-0000

1,1: DBGC mode

0,0: DBPC mode

0,0: External bus division factor

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

JAC5-39173 3/18/99

L. Phillips

Z. Psenicnik

J. Bello

3/19/99

3/19/99

3/19/99

LPP

B ZIP4/15/99JJC5-39353Component change forfrequency modulation

Change Reset IC U3,

No Load C40C

Upgrade to larger SDRAMD

5-39830 LPP 6/24/99 LPP

5-44759 LPP 6/20/02 JK

dx7

dx9

dx1

dx8

dx11

dx10

dx12

dx4

D8

D14

D15

D14

D0

D2

D12

D1 D1

D13

D0

D6

D9

D10

D5

D12

D9

D4

D15

D4

D11

BS_AB0

D7

D7

D6

D5

BS_AB1

D9

D3

D3

D2

D8

D8

D10

D4

D13

D1

D7

D10

D11

GPL1

GPL1

GPL2

GPL3

CS_n0

CS_n1

U5-36

U5-35

A21

A23

A17

A21

A30

A16

A9

A20

A24

A11

A18

A27

A13

A19

A24

A10

A25

A23

A12

A22

A26

A30

A27

A22

A15

A29

A28

A25

A26

A29

A14

A28

U5-25

GPL0

D029

D131

D233

D335

D438

D540

D642

D744

D830

D932

D1034

D1136

D1239

D1341

D1443

D1545

A025

A124

A223

A322

A421

A520

A619

A718

A88

A97

A106

A115

A124

A133

A142

A151

A1648

A1717

NC

313

Vcc

37

Byte#47

NC19

NC414

Gn

d-a

46

Gn

d-b

27

OE#28

CE#26

WE#11

RESET#12

NC210

RY/BY#15

A1816

1

1

1

DQ02

DQ14

DQ25

DQ37

DQ48

DQ510

DQ611

DQ713

DQ842

DQ944

DQ1045

DQ1147

DQ1248

DQ1350

DQ1451

DQ1553

A023

A124

A225

A326

A429

A530

A631

A732

A833

A934

A1022

Vcc

Q3

43V

ccQ

29

DQML15

NC/A1236

DQMH39

Vss

128

Vss

Q4

52

NC240

CS#19

RAS#18

WE#16

CAS#17

Vss

Q1

6

Vss

Q2

12

Vss

Q3

46

CKE37

CLK38

Vss

241

Vcc

11

Vcc

214

Vcc

Q4

49

Vcc

Q1

3

BA020

BA121

A1135

Vss

354

Vcc

327

12

1A12

1A24

1A36

1A48

2A111

2A213

2A315

2A417

1G1

2G19

1Y118

1Y216

1Y314

1Y412

2Y19

2Y27

2Y35

2Y43

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

U6

FLASH-512Kx16

TP54

R155

6.19K

TP55

TP53U5

SDRAM-4Mx16

R57

100K

T1

R153

6.19K

R154

6.19K

U4

74AHC244

T2

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

VDDH

CLKOUT

BS_AB[0:3]

D[0:31]

GPL[0:7]

CS_n[0:7]

SRESET_n

HRESET_n

A[6:31]

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620005 D

Flash, SDRAM and HRESET Config Word

C

4 6Monday, August 05, 2002

Page 167: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 157

Figure D-10. Flash, SDRAM HRESET config word.

Attach GND and

VSSSYN at a

single point.

Place VSSSYN

on a split

plane beneath

the MPC823 PLL

section

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

3/18/99JAC5-39173 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/19/99

3/19/99

3/19/99

B

frequency modulationComponent change for 5-39353 JJC 4/15/99 ZIP

Change Reset IC U3,

No Load C40C

Upgrade to larger SDRAMD

LPP5-39830 6/24/99 LPP

5-44759 LPP 6/20/02 JK

BG

_n

BB

_n

IRQ

_n2

TEA

_n

A27

BS_AB[0:3]

IP_B2

IRQ

_n7

A22

A14

A[6:31]

IRQ_n[0:7]

IP_B4

TA_n

A30

A18

IP_B5

BR_

n

A24

A21

A20

A19

A17

A8

IP_B6

BS_

AB

0

IRQ

_n4

SPK

ROU

T

A12

A11

IRQ

_n1

IRQ

_n5

CS_

n7

GPL

5

GPL

3

IRQ

_n6

CS_

n6

CS_

n5

A25

IP_B3

BS_

AB

2

TSIZ

1

CS_

n4

A6

GPL[0:7]

GPL

6

GPL

4

A26

GPL

7

TSIZ

0

CS_

n0

A31

A28

A23

A9

GPL

2

BI_

n

A16

A15

A10

CS_n[0:7]

IP_B7

FRZ

IRQ

_n3

CS_

n1

A7

TSIZ[0:1]

BS_

AB

3

IRQ

_n0

CS_

n3

A29

IP_B[2:7]G

PL1

GPL

0

BS_

AB

1

CS_

n2

TS_n

A13

VID

EO0

VID

EO1

VID

EO2

VID

EO3

VID

EO4

VID

EO5

VID

EO6

VID

EO7

GN

D

VSS

SYN

D26

D28

D14

D15

D1

D0

D19

D24

D18

D20

D10

D7

D16

D6

D2

D23

D21

D25

D12

D31

D27

D3

D8

D30

D22

D4

D5

D13

D9

D11

D17

D29

D[0:31]A

6M

13

A7

N15

A8

N16

A9

M15

A10

L13

A11

M16

A12

M14

A13

L14

A14

L15

A15

L16

A16

K14

A17

K13

A18

G13

A19

K15

A20

J15

A21

J14

A22

G14

A23

H15

A24

H13

A25

H14

A26

F14

A27

K16

A28

G16

A29

H16

A30

G15

A31

F16

D0

M1

D1

L1

D2

J2

D3

J1

D4

L2

D5

H1

D6

F1

D7

E1

D8

M2

D9

K2

D10

K3

D11

K1

D12

M4

D13

M3

D14

J3

D15

J4

D16

H2

D17

K4

D18

H3

D19

G2

D20

G3

D21

F2

D22

H4

D23

L4

D24

F3

D25

G4

D26

E4

D27

L3

D28

F4

D29

E2

D30

D2

D31

E3

CS0

_nD

12

CS1

_nA

14

CS2

_nB

14

CS3

_nA

15

CS4

_nB

16

CS5

_nD

13

CS6

_n/

CE1

_B_n

C14

CS7

_n/

CE2

_B_n

B15

VDDH1E5

VDDH2E6

VDDH3E7

VDDH4E8

VDDH5E9

VDDH6E10

VDDH7E11

VDDH8E12

VDDH9F5

VDDH10F12

VDDH11G5

VDDH12G12

VDDH13H5

VDDH14H12

VDDH17J5

VDDH18J12

VDDH19K5

VDDH20K12

VDDH21L5

VDDH22L12

VDDH23M5

VDDH24M6

VDDH25M7

VDDH26M8

VDDH27M9

VDDH28M10

VDDL1A7

VDDL2G1

VDDL3J16

VDDL4T7

GN

D1

F6

GN

D2

F7

GN

D3

F8

GN

D4

F9

GN

D5

F10

GN

D6

F11

GN

D7

G6

GN

D8

G7

GN

D9

G8

GN

D10

G9

GN

D11

G10

GN

D12

G11

GN

D13

H6

GN

D14

H7

GN

D15

H8

GN

D16

H9

GN

D17

H10

GN

D18

H11

GN

D25

J6

GN

D26

J7

GN

D27

J8

GN

D28

J9

GN

D29

J10

GN

D30

J11

GN

D31

K6

GN

D32

K7

GN

D33

K8

GN

D34

K9

GN

D35

K10

GN

D36

K11

VD

DSY

NB

1

KA

PWR

A3

VSS

SYN

A1

VSS

SYN

1A

2

VDDH29M11

VDDH30M12

GN

D37

L6

GN

D38

L7

GN

D39

L8

GN

D40

L9

GN

D41

L10

GN

D42

L11

PORE

SET_

nB

3

RSTC

ON

F_n

C5

HRE

SET_

nB

5

SRES

ET_n

B4

XTA

LA

4

EXTA

LA

5

XFC

B2

CLK

OU

TD

1

EXTC

LKA

6

TEX

PD

5

VD

0/

LD1

/PD

8T1

VD

1/

LD2

/PD

9P4

VD

2/

LD3

/PD

10T2

VD

3/

LD4

/PD

11N

5V

D4

/LD

5/

PD12

R3V

D5

/LD

6/

PD13

P5V

D6

/LD

7/

PD14

T3V

D7

/LD

8/

PD15

R4FI

ELD

/LD

0/

PD7

R2B

LAN

K/

LOE

/LC

D_A

C/

PD6

R1V

SYN

C/

FRA

ME

/PD

5P2

HSY

NC

/LO

AD

/PD

4P3

CLK

-SH

IFT

/PD

3N

4

TSIZ

0/

REG

_nF1

5

TSIZ

1E1

5

RD/

WR_

nC

13

Bu

rst_

nB

10

BD

IP_n

/G

PL_B

5_n

A13

TS_n

D10

TA_n

A12

TEA

_nC

11

BI_

nB

12

RSV

_n/

IRQ

2_n

D9

KR_

n/

IRQ

4_n

/RE

TRY

/SP

KRO

UT

B7

DP0

/IR

Q3_

nC

3

DP1

/IR

Q4_

nD

4

DP2

/IR

Q5_

nD

3

DP3

/IR

Q6_

nC

2

FRZ

/IR

Q6_

nA

10

IRQ

7_n

N3

IRQ

1_n

N2

IRQ

0_n

N1

BR_

nB

11

BB

_nA

11B

G_n

C10

WE0

_n/

BS_

AB

0_n

/IO

RD_n

D16

WE1

_n/

BS_

AB

1_n

/IO

WR_

nE1

6

WE2

_n/

BS_

AB

2_n

/PC

OE_

nD

15

WE3

_n/

BS_

AB

3_n

/PC

WE_

nF1

3

GPL

_A0_

n/

GPL

_B0_

nE1

3

GPL

_A1_

n/

GPL

_B1_

n/

OE_

nC

16

GPL

_A2_

n/

GPL

_B2_

n/

CS2

_nC

15

GPL

_A3_

n/

GPL

_B3_

n/

CS3

_nD

14

UPW

AIT

A/

GPL

_A4_

n/

AS_

nD

11

UPW

AIT

B/

GPL

_B4_

nB

13

GPL

_A5_

nC

12

TCK

/D

SCK

T12

TMS

R12

TDI/

DSD

IR1

1

TDO

/D

SDO

N12

TRST

_nP1

1

WA

IT_B

_nC

4

ALE

_B/

DSC

K/

AT1

B8

IP_B

0/

IWP0

/V

FLS0

A8

IP_B

1/

IWP1

/V

FLS1

C8

IP_B

2/

IOIS

16_B

_n/

AT2

D7

IP_B

3/

IWP2

/V

F2A

9

IP_B

4/

LWP0

/V

F0B

9

IP_B

5/

LWP1

/V

F1C

9

IP_B

6/

DSD

I/A

T0C

7

IP_B

7/

PTR_

n/

AT3

D8

OP2

/M

OD

CK

1/

STS_

nD

6

OP3

/M

OD

CK

2/

DSD

OB

6

PA15 / USBRXDP16

PA14 / USBOE_nR15

PA13 / RXD2R14

PA12 / TXD2R13

PA9 / L1TXDA / SMRXD2N10

PA8 / L1RXDA / SMTXD2T9

PA7 / CLK1 / TIN1 / L1RCLKA / BRGO1T8

PA6 / CLK2 / TOUT1_n / TIN3P8

PA5 / CLK3 / TIN2 / L1TCLKA / BRGO2T6

PA4 / CLK4 / TOUT2_n / TIN4R6

PB31 / SPISEL_n / LCD_AN14

PB30 / SPICLKP15

PB29 / SPIMOSIP14

PB28 / SPIMISOT15

PB27 / I2CSDA / BRGO1T14

PB26 / I2CSCL / BRGO2P12

PB25 / SMTXD1N11

PB24 / SMRXD1T11

PB23 / SMSYN1_n / SDACK1_nT10

PB22 / SMSYN2_n / SDACK2_nR9

PB19 / L1ST1 / LCD_BR7

PB18 / RTS2_n / L1ST2P7

PB17 / L1ST3 / LCD_CN7

PB16 / L1RQA / L1ST4R5

PC15 / DREQ1_n / L1ST5R16

PC14 / DREQ2_n / RTS2_n / L1ST6T16

PC13 / L1ST7P13

PC12 / L1RQA / L1ST8T13

PC11 / USBRXPR10

PC10 / TGATE1_n / USBRXNP9

PC9 / CTS2_nR8

PC8 / CD2_n / TGATE1_nN8

PC7 / USBTXPT5

PC6 / USBTXNN6

PC5 / L1TSYNCA / SDACK1_nP6

PC4 / L1RSYNCAT4

NC1A16

NC2C1

NC3C6

NC4E14

NC5J13

NC

6N

9

NC

7N

13

NC

8P1

NC

9P1

0

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

U1

MPC823ZC

MPC823(the monster)

VDDH

VDDL

KAPWR VDDSYN

VIDEO[0:7]

A[6:31]

TSIZ[0:1]

TEXP

PORESET_n

EXTCLK

Field

HSYNC

SPISEL_n

SPIMOSI

SPICLK

Video-Clock-3

XTAL

MODCK2

XFC

MODCK1EXTAL

HRESET_n

VSYNC

SRESET_n

CLKOUT

Blank

SPIMISO

RD/WR_n

I2CSCL

I2CSDA

CS_n[0:7]

IRQ_n[0:7]

BS_AB[0:3]

SMRXD2

PA7

SMTXD2

PA6

PA4

PA5

PA15

PA14

TXD2

RXD2

PB19

PB16

PB18

PB17

SDACK2_n

SDACK1_n

SMTXD1

SMRXD1

DREQ1_n

PC13

DREQ2_n

PC12

PC10

PC11

PC7

PC5

PC8

PC9

PC6

DSDO

TMS

TRST_n

VFLS0

VFLS1

DSCK

RSTCONF_n

DSDI

D[0:31]

GPL[0:7]

WAIT_B_n

ALE_B

IP_B[2:7]

Burst_n

TS_n

TA_n

TEA_n

BI_n

BR_n

BG_n

BB_n

SPKROUT

FRZ

PC4

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620005 D

PowerPC MPC823 CPU

C

5 6Monday, August 05, 2002

Page 168: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 158

Figure D-11. Power PC MP C823 CPU.

Supply RF/EMI

Filters and Reset

Circuits

FPGA decoupling caps

MPC823 decoupling caps

System Clock

1536*830 < XFC < 1536*1470 pf Value selected for the final mulitplication ratio

RF Suppression

to CPU

System

Place decoupling capacitors next to CPU VDDSYN pin B1 and VSSSYN pin A1 and A2

Split ground plane under these components

'244

decoupling cap

DRAM decoupling caps

Place these components

as close to the

processor as possible

Use separate PPL VDDSYN power plane from 3.3V plain

to CPU PLL pins A1

and A2

FPGA Clock

FLASH decoupling caps

to CPU PLL

pin B1

to CPU 32KHz

Clock

PLL Filter

Capacitor

MPC823 PLL

Supply

RF Suppression

Oscillator

decoupling

cap

Jim Belesiu

Jim Belesiu

Mar 5, 1999

Mar 5, 1999

620005.dsn

5-39173 JAC 3/18/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/19/99

3/19/99

3/19/99

FM Section for spreading RF

emissions. R2 selects the

deviation.

Load C107 w/1.5uF and unload C1 for non-FM clocking

From FPGA

B ZIP4/15/99JJC5-39353frequency modulationComponent change for

Change Reset IC U3,

No Load C40C

Upgrade to larger SDRAMD

LPP5-39830 6/24/99 LPP

5-44759 LPP 6/20/02 JK

xtalp

VCLK

VSSSYN

Q1-Base

PORESET-Input

XFCX

12

12

121

2

12

12

12

1 2

12

12

12

12

12

1 2 12

12

1 2

12

Reset_n1

Input2

Gn

d3

3

1

2

12

12

12

12

121

2

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

12

1 2

12

Reset_n1

Input2

Gn

d3

OE1

GND2

OUT3

VDD4

12

12

12

12

12

12

12

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

C1116.8uF

C1106.8uF

C28100nF

C130

NL

C29100nF

C10822pF

C43100nF

Y1

32768Hz

C44100nF

C115

330pF

R118

NL

R513.9M

R119

NL

R50 200K

C41100nF

C42100nF

C39

100nF

L1

Ferrite-120

C106100nF

R123

100K

C16

6.8uF

L3

Ferrite-120

R122

12.4K

C18

6.8uF

U3

2.0V

Q1

NL

R94

NL

R121

NL

C376.8uF

C116

330pF

C120

6.8uF

C38

6.8uF

R52

33

C114

330pF

C13

100nF

C15

100nF

C6100nF

C14

6.8uF

C118

330pF

C7100nF

C10922pF

R2

1K

R117

200K

C17

100nF

C119

330pF

C11.5uF

R124

1.58K

C36100nF

C128100nF

C40100nF

R1

100

C4100nF

C5100nF

C2

100nF

C12

6.8uF

C21100nF

C22100nF

C107NL

L2 Ferrite-120

C19100nF

U2

3.0V

G1

SG-636PCE-25.175M

C20100nF

C30100nF

C1136.8uF

C31100nF

C117

330pF

C1126.8uF

C32100nF

VDDH

VDDSYN

VDDH

VDDL

VDDH

VDDH

KAPWR

VDDH

VDDH

VDDH

VDDH

VDDH

+3.3V_unfiltered

HRESET

HRESET_n

Video-Clock-25

Vbackup

EXTAL

PORESET_n

EXTCLK

XFC

+3.3V_unfiltered

XTAL

PA14

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620005 D

Power Distribution, Clocks and Reset

C

6 6Monday, August 05, 2002

Page 169: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 159

Figure D-12. Power distribution.

On/Standby

Place capacitors

by connectorAC On LEDs

Trend

Lead Select

Print

Break-Away PCB Section

Flag Pole Area

Place one tantalum cap neareach seven segment LEDgroup

Place one

ceramic cap

near each IC

Silence Button

Break-Away PCBSection

Silence

Switch

7

1

9

Pull-up Resistor Network Detail

5

6

4

8

10

2 3

Silence LED

Jim Belesiu

Jim Belesiu

3/15/99

3/15/99

3/23/99 LPPJAC5-39251

L. Phillips

Z. Psenicnik

J. Bello

3/24/99

3/24/99

3/24/99

B No Load D16

D13 to Low Profile, R51 to 316C

5-39485 4/28/99LPP LPP

7/23/99LPP5-39994

On/Off-sw

Clock1

Print

Lead-Select

Trend

ACON-LED

u13-out

u19-out

Print-sw

Lead-Select-sw

FP-Common

ACLED-2

ACLED-1

AC-On-x

Sil-Sw-a

D10-C

D10-Vcc

Silence-Switch

On-Led

Silence-LED

Sil-Sw-b

Key-Clock

LED-Data

LED-Latch-2

u26-18

Key-Latch-b

LED-Latch-n

Key-data-b

Key-Data

LED-Data-b

Clock3

u26-9

u26-7

LED-Latch-1

Key-Latch-n

Clock2

LED_SPO2_enable

LED_TP_enable

LED-Enable

LED_NIBP_enable

Trend-sw

1

2

3

4

5

LED_NIBP_Clock

LED_NIBP_Latch

LED_NIBP_Data_In

LED_NIBP_Data_Out

Silence-LEDLED_NIBP_Enable

1

2

3

4

5

13 12

23418 5 6 7

LED_SpO2_Clock

LED_SpO2_Latch

LED_SpO2_Data_In

LED_SpO2_Enable

1A12

1A24

1A36

1A48

2A111

2A213

2A315

2A417

1G1

2G19

1Y118

1Y216

1Y314

1Y412

2Y19

2Y27

2Y35

2Y43

Key-Clock-b

Key-Latch-b

Key-Data-b

On/Off-sw

Silence-Switch

Trend

Lead-Select

Print

1 2

3 4

5 6

7 8

9 10

11 12

13 14

LED_TP_Data_In

LED_TP_Clock

LED_TP_Latch

LED_TP_Data_Out

LED_TP_Enable

1 2

1 2

1 2

3 4

12

5 6

12

12

9 8

1 2

12

11 10

1 2

1 2

1

2

3

4

5

1 2

1

2

3

4

5

12

1 2

1 2

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

TP2

C18

0.1uF

J2A

flex-cable-5

TP3

NIBP LED Circuits

Front Panel - C

J2xA

flex-cable-5

TP4

C4

0.1uF

C1

4.7uF

+

U1F

74HC04

C21

0.1uF

C8

4.7uF

+

C24

0.1uF

C10

4.7uF

+

C20

0.1uF

C11

4.7uF

+

C23

0.1uF

C28

4.7uF

+

C25

0.1uF

C2

0.1uF

R1

2.2K

C3

0.1uF

C26

0.1uF

C5

0.1uF

R71

100

C6

0.1uF

I705124

Front Panel - D

U26

74HC244

C7

0.1uF

Keyboard Circuits

Front Panel - A

R72

100

C16

0.1uF

J1

HEADER 7X2

R73

100

C12

0.1uF

C27

4.7uF

+

TP182

C13

0.1uF

C9

4.7uF

+

TP183

C14

0.1uF

I705144

Front Panel - B

TP184

C15

0.1uF

D1

5x5 Green

U1A

74HC04

C19

0.1uF

D2

5x5 Green

U1B

74HC04

C22

0.1uF

SW13

U1C

74HC04

D10

T1 (3mm) Red

SW9

U1D

74HC04

SW22

SW11

U1E

74HC04

SW28

R67 1.21K

J3A

flex-cable-5

R51316

R66 1.21K

J3xA

flex-cable-5

D13

T1 (3mm) Green

R65 1.21K

R2

2.15K

C17

0.1uF

R68 1.21K

VCC

VCCVCC

VCC VCC VCC VCC VCC

VCC VCC VCC VCC VCC

VCC

VCC VCC VCC

VCC

VCC

VCC VCC

VCC

VCC VCC

VCC

VCC VCCVCC VCC VCC

VCC

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620008 C

Front Panel Display Board

C

1 5Friday, July 23, 1999

Page 170: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 160

Figure D-13. Front panel display.

ETCO2 Alarm On-Off

HR Alarm On-Off

LH Select

LH Adjust (+)

LH Adjust (-)

SpO2 Alarm On-Off

RH Select

RH Adjust (+)

RH Adjust (-)

NIBP Alarm On-Off

BP Auto

BP Start-Stop

QRS Volume (+)

QRS Volume (-)

Alarm Volume (+)

Alarm Volume (-)

Time

1

5

4

69

10

Pull-up Resistor Network Detail

2 3

78

On / Standby

Jim Belesiu

3/15/99Jim Belesiu

3/15/99620008.dsn

3/23/99

3/23/99

3/23/99

3/23/99

L. Phillips

Z. Psenicnik

J. Bello

5-39251 JAC LPP

B No Load D16

D13 to Low Profile, R51 to 316C

4/28/99LPP LPP5-39485

5-39994 LPP 7/23/99

u2-9

Clock1

HRalarm-sw

LHselect-sw

LHAdjust+sw

LHAdjust-sw

QRSvol+sw

Alarmvol+sw

Alarmvol-sw

Time-sw

etco2-sw

Trend

Lead-Select

Print

NIBPalarm-sw

RHselect-sw

BPauto-sw

RHadjust+sw

RHadjust-sw

SpO2alarm-sw

BPstart/stop-sw

U3-4

QRSvol-sw

u2-10

1 2

1 2

1 2

5

12346789

10

5

43219876

10

1 2

1 2

1 2

1 2

5

12346789

10

SER10

A11

B12

C13

D14

E3

F4

G5

H6

CLK2

INH15

SH/LD1

QH9

QH7

1 2

SER10

A11

B12

C13

D14

E3

F4

G5

H6

CLK2

INH15

SH/LD1

QH9

QH7

1

3

2

1 2

1 2

1 2

1 2

1 2

1 2

1 2

1 2

1 2

1 2

SER10

A11

B12

C13

D14

E3

F4

G5

H6

CLK2

INH15

SH/LD1

QH9

QH7

1 2

1 2

1 2

1 2

1 2

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

TP80

SW19

TP81

SW20

TP82

SW21

TP86

R6

10K

C

TP85

R5

10K

C

TP84

SW25

TP77

SW26

TP83

SW23

TP87

SW24

TP88

R7

10K

C

U2

74HC165 TP178

SW27

U4

74HC165

D48

BAV99L

SW14

SW4

TP68

SW6

TP69

SW8

TP70

SW10

TP71

SW12

TP66

SW1

TP72SW2 TP73

SW3

TP74

SW5

U3

74HC165

SW7

TP75

SW15

TP76

SW16

TP67

SW17

TP79

SW18

VCC

VCC

VCC

Key-Clock-b

Key-Latch-b

Key-Data-b

Silence-Switch

Trend

Lead-Select

Print

On/Off-sw

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620008 AC

5Friday, July 23, 1999

C

Keyboard Scanner

C

2 5Friday, July 23, 1999

Page 171: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 161

Figure D-14. Key board scanner.

SpO2 Pulse Rate Hundreds SpO2 Pulse Rate Tens

Temperature Tens

Temperature Ones Temperature Tenths

Temperature Hundreds

SpO2 Pulse Rate Ones

Degree F

Degree C

Jim Belesiu

3/15/99Jim Belesiu

3/15/99620008.dsn

LPP3/23/99JAC5-39251

L. Phillips

Z. Psenicnik

J. Bello

3/24/99

3/24/99

3/24/99

B No Load D16

D13 to Low Profile, R51 to 316C

5-39485 LPP LPP4/28/99

7/23/99LPP5-39994

d36-d

d36-c

u16-15

u16-6

u19-15

u19-3

u19-6

u19-7

d39-d

d39-c

u18-5

d38-d

d38-c

d35-c

u15-6

u15-15

d35-d

d39-b

d35-g

d39-a

d38-g

d36-e

d34-d

u19-out

d38-a

d35-f

d33-b

d34-e

d39-f

d36-bd35-b

d34-f

d34-a

d34-b

d34-g

d38-b

d39-e

d34-c

d39-g

d35-a

d36-g

u15-9

d38-f

d36-a

d38-e

u18-9

d36-f

u14-9

u17-9

d35-e

u17-15

u17-4

u17-5

d37-d

d37-c

d37-e

d37-a

d37-g

d37-b

d37-f

u16-9

LED-Latch-1

u14-4

u14-6

u14-2

u14-15

u14-5

u14-3

u14-1

u15-1

u15-5

u15-4

d33-c

u16-3

u16-4

u16-2

u16-5

u16-1

u15-7

u17-1

u17-2

u18-15

u18-3

u18-1

u18-2

u18-6

u18-4

u19-1

u19-2

u19-5

u19-4

LED-Data-b

u17-3

u15-2

u15-3

u17-6

d35-dp

d46-cu16-7

d47-c

u14-7

u18-7

LED-TP-Enable

Clock2

2

3

4

18

5

6

7"E"

4

"D"5

Anode-11

"C"8

Dp7

"B"9

"A"10

"F"2

Anode-26

"G"3

2

3

4

18

5

6

7

"E"4

"D"5

Anode-11

"C"8

Dp7

"B"9

"A"10

"F"2

Anode-26

"G"3

"E"4

"D"5

Anode-11

"C"8

Dp7

"B"9

"A"10

"F"2

Anode-26

"G"3

"E"4

"D"5

Anode-11

"C"8

Dp7

"B"9

"A"10

"F"2

Anode-26

"G"3

12

1

2

3

45

6

7

8

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

12

2

3

4

18

5

6

7

1

2

3

45

6

7

8

"E"4

"D"5

Anode-11

"C"8

Dp7

"B"9

"A"10

"F"2

Anode-26

"G"3

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

2

3

4

18

5

6

7

1

2

3

45

6

7

8

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

1

2

3

45

6

7

8

2

3

4

18

5

6

7

1

2

3

45

6

7

8

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

1

2

3

45

6

7

8

1

2

3

45

6

7

8

"E"4

"D"5

Anode-11

"C"8

Dp7

"B"9

"A"10

"F"2

Anode-26

"G"3

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

"E"4

"D"5

Anode-11

"C"8

Dp7

"B"9

"A"10

"F"2

Anode-26

"G"3

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

R32

150

D38

7-SEG LED 0.36

A

B

C

D

E

F

G

R27

150

D33

7-SEG LED 0.36

A

B

C

D

E

F

G

TP50

D39

7-SEG LED 0.36

A

B

C

D

E

F

G

TP35

D37

7-SEG LED 0.36

A

B

C

D

E

F

G

D46

T1.75 (5mm) Green

R35

150

R52

215

U14

74HC595A

R53

215

TP14

D47

T1.75 (5mm) Green

TP10

TP21

TP12

TP22

TP30

R28

150

TP52

TP25

R31

150

TP33

D34

7-SEG LED 0.36

A

B

C

D

E

F

G

TP34

U16

74HC595A

TP38

R34

150

TP37

R37

150

TP40

U19

74HC595A

TP61

U18

74HC595A

TP62

R36

150

TP63

R33

150

TP64

R30

150

TP42

U15

74HC595A

TP59

R26

150

TP60

R29

150

TP5

D36

7-SEG LED 0.36

A

B

C

D

E

F

G

U17

74HC595A

D35

7-SEG LED 0.36

A

B

C

D

E

F

G

VCC VCC

VCC

VCCVCC

VCC

VCC

VCC

VCC

VCCVCC

VCC

VCC

VCC

VCC

LED_TP_Data_In

LED_TP_Data_Out

LED_TP_Clock

LED_TP_Latch

LED_TP_Enable

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620008 C

Temp/Pulse LED Drivers

C

3 5Friday, July 23, 1999

Page 172: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 162

Figure D-15. Temp/pulse LED drivers.

Diastolic Hundreds Diastolic Tens Diastolic Ones

BP Dia Hi BP Dia Lo

Systolic Ones

BP Sys Hi BP Sys LoNIBP Alarm On/Off

Systolic TensSystolic Hundreds

Q30Q60 QxQ1Q5 Q3Q10Q15

Jim Belesiu

3/15/99Jim Belesiu

3/15/99620008.dsn

5.-39251 JAC 3/23/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/24/99

3/24/99

3/24/99

B No Load D16

D13 to Low Profile, R51 to 316C

4/28/99LPP LPP5-39485

5-39994 LPP 7/23/99

d44-a

d44-b

d44-c

d45-a

d45-c

d45-b

d44-g

u20-4

d41-g

d42-f

d41-a

d41-d

d42-g

u20-5

d44-e

d42-d

d41-b

d42-a

d45-g

d44-f

d42-c

u20-1

d41-e

d45-dd44-d

u20-6

u20-2

d45-f

d41-f

u19-out

d42-b

d45-e

u20-15

u20-3

u20-out

u23-out

u22-out

u25-out

u21-out

d40-f

d40-b

d40-c

d40-g

d40-a

d41-c

d42-e

d43-d

d43-e

d43-g

d43-fu23-1

u23-3

u24-15

u24-2

u24-3

u24-4

u24-5

u24-6

u25-2

u25-5

d43-c

d43-b

d43-a

u23-4

u20-7 d15-c

Clock3

u23-2

u23-15

u23-5

u23-7

u21-7

d6-c

u21-3

u21-2

u21-15

u21-5

u21-4

u21-6

u22-7

u22-1

u22-3

u22-2

U22-15

u22-4

u22-6

u22-5

d8-c

u25-7

d14-c

u25-1

u25-4

u25-3

u25-15

u24-out

d11-c

u24-7

u24-1

u21-1

u23-6 u25-6

d30-a

d31-a

u13-4

u13-7

u13-15

u13-3

u13-1

u13-6

u13-5

u13-2

d24-a

d28-a

d22-a

d29-a

d25-a

d26-a

u13-out

d40-e

d40-d

LED-NIBP-Enable

LED-Latch-2

12

12

12

12

12

12

12

12

1

2

3

45

6

7

8

"E"1

"D"2

Anode-13

"C"4

Dp5

"B"6

"A"7

"F"9

Anode-28

"G"10

2

3

4

18

5

6

7"E"

1

"D"2

Anode-13

"C"4

Dp5

"B"6

"A"7

"F"9

Anode-28

"G"10

2

3

4

18

5

6

7

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

"E"1

"D"2

Anode-13

"C"4

Dp5

"B"6

"A"7

"F"9

Anode-28

"G"10

1

2

3

45

6

7

81

2

3

45

6

7

8 1

2

3

45

6

7

8

"E"1

"D"2

Anode-13

"C"4

Dp5

"B"6

"A"7

"F"9

Anode-28

"G"10

"E"1

"D"2

Anode-13

"C"4

Dp5

"B"6

"A"7

"F"9

Anode-28

"G"10

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

2

3

4

18

5

6

7

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

12

1

2

3

45

6

7

8

1

2

3

45

6

7

8

1

2

3

45

6

7

8

1

2

3

45

6

7

8

2

3

4

18

5

6

7

2

3

4

18

5

6

7

12

12

2

3

4

18

5

6

7

12

"E"1

"D"2

Anode-13

"C"4

Dp5

"B"6

"A"7

"F"9

Anode-28

"G"10

12

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

TP93

D6

T1.75 (5mm) Green

D28

T1.7

5(5

mm

)Gre

en

TP103

D8

T1.75 (5mm) Green

D26

T1.7

5(5

mm

)Gre

en

R56

215

D11

T1.75 (5mm) Green

D22

T1.7

5(5

mm

)Gre

en

TP110

D14

T1.75 (5mm) Green

D24

T1.7

5(5

mm

)Gre

en

TP111

R42

680

TP142

R57

215

D41

7-SEG LED 0.5

A

B

C

D

E

F

G

TP179

TP137

R40

680

TP141

TP118

D42

7-SEG LED 0.5

A

B

C

D

E

F

G

R58

215

R44

680

U24

74HC595A

TP116

U23

74HC595A

U25

74HC595A

TP128

D43

7-SEG LED 0.5

A

B

C

D

E

F

G

R48

680

TP136

R47

680

R49

680

TP140

TP105

D44

7-SEG LED 0.5

A

B

C

D

E

F

G

TP126

TP89

D45

7-SEG LED 0.5

A

B

C

D

E

F

G

TP130

R54

2.15K

U21

74HC595A

TP180

TP112

U22

74HC595A

TP181

TP138

R38

680

U13

74HC595A

TP114

U20

74HC595A

D31

T1.7

5(5

mm

)Gre

en

TP139

R43

680

R25

150

TP132

R41

680

R24

150

R59

1.21K

R39

680

TP1

R55

215

R46

680

TP8

TP91

D15

T1 (3mm) Red

D29

T1.7

5(5

mm

)Gre

en

TP101

R45

680

D30

T1.7

5(5

mm

)Gre

en

TP113

D40

7-SEG LED 0.5

A

B

C

D

E

F

G

D25

T1.7

5(5

mm

)Gre

en

VCC

VCC VCC

VCC VCC VCC

VCC

VCC VCC

VCCVCC

VCC

VCC

VCC

LED_NIBP_Clock

LED_NIBP_Latch

LED_NIBP_Data_In

Silence-LED

LED_NIBP_Data_Out

LED_NIBP_Enable

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620008 C

NIBP LED Drivers

C

4 5Friday, July 23, 1999

Page 173: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 163

Figure D-16. NIBP LED drivers.

Jim Belesiu

3/15/99Jim Belesiu

3/15/99620008.dsn

HR Alarm

On/Off

SpO2 % Hundreds

ETCO2 Alarm

On/Off

SpO2 % Ones

SpO2 Bargraph

SpO2 % Tens

SpO2 Alarm

On/Off

SpO2 Lo

SpO2 Hi

3/23/99

3/24/99

3/24/99

3/24/99

L. Phillips

Z. Psenicnik

J. Bello

5-39251 JAC LPP

B No Load D16

D13 to Low Profile, R51 to 316C

5-39485 LPP LPP4/28/99

7/23/99LPP5-39994

u5-1

d9-

c

u7-2

u12-4

d5-e

u12-7

d4-f

u12-out

d4-c

u7-out

d4-g

d27-15

u7-7

u6-5

u5-out

u13-out

u5-4

d12-c

u7-1

u6-3

u6-15

d5-c

d27-18

d27-11

d16-c

u7-6

u12-1

u5-2

d5-d

d27-19

u7-5

d4-e

d27-20

u6-7

d5-g

d27-14

u5-15

d7-c

u7-15

d3-b

u6-2

Clock1

d5-b

d27-17

d27-12

u5-5

u7-4

d4-a

d4-b

u12-6

u12-2

u7-3

d5-f

d27-13

u5-3

d3-c

LED-Latch-2

d4-d

d5-a

d27-16

d18-c

u6-6

u6-1

u6-4

u12-15

u6-out

LED-SPO2-Enable

u5-6

u12-5

u12-3

1

2

3

45

6

7

8

12

"E"1

"D"2

Anode-13

"C"4

Dp5

"B"6

"A"7

"F"9

Anode-28

"G"10

12

4

3

2

18

6

7

5

12

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QC2

QB1

QD3

QE4

QF5

QG6

QH7

QH9

"E"1

"D"2

Anode-13

"C"4

Dp5

"B"6

"A"7

"F"9

Anode-28

"G"10

1

2

3

45

6

7

8

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

4

3

2

18

7

6

5

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

4

3

2

18

7

6

5 4

3

2

18

7

6

5

4

3

2

18

7

6

5

"E"1

"D"2

Anode-13

"C"4

Dp5

"B"6

"A"7

"F"9

Anode-28

"G"10

2

1

5

6

7

8

9

10

3

4

11

12

13

14

15

16

17

18

19

20

12

12

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

R21

680

D7

T1 (3mm) Red

D3

7-SEG LED 0.5

A

B

C

D

E

F

G

TP153

D9

T1 (3mm) Red

TP151

R10

680

D12

T1 (3mm) Red

U7

74HC595AR63

215

R69

681

R64

215

D4

7-SEG LED 0.5

A

B

C

D

E

F

G

TP177

TP162

R23

680

TP175

U12

74HC595A

R9

680

TP155

U5

74HC595A

U6

74HC595A

R70

681

R12

680

TP172

TP143

TP170

TP174

TP168

TP152

R13

680

R62

2.2K

D5

7-SEG LED 0.5

A

B

C

D

E

F

G

D27

10 LED Bargraph

D18

T1.75 (5mm) Green

TP149

D16

No Load

TP173

TP176

VCC

VCC

VCC

VCC

VCC VCC

VCC

VCC

VCC

VCC

VCC

LED_SpO2_Clock

LED_SpO2_Latch

LED_SpO2_Data_In

LED_SpO2_Enable

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620008 C

SPO2 LED Drivers

C

5 5Friday, July 23, 1999

Page 174: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 164

Figure D-17. SpO2 LED drivers.

Zero Adjust

Size Adjust

Vertical Amplifier

Horizontal Amplifier

Grid Voltages

Video Amplifier

Break Away CRT socket Board

6 Position flat ribbon cable

Connects Main CRT to CRTsocket Board

Ramp Generator

750uSec

16.7mSec

Vertical Sync

5.5uSec

31.7uSec

Horizontal Sync

To Yoke

Unused

Brightness

Adjust

Focus

Adjust

1/2W Carbon Comp

To Main

Board

5-39097 JAC 3/9/99 LPP

Rick Myers

Rick Myers

Mar 4 1999

Mar 4 1999

620011.dsn

L.Phillips

Z.Psenicnik

J.Bello

3/9/99

3/9/99

3/9/99

Modify Video Amplifier

Reduce RF Emissions

ZIP4/15/99JJC5-39339

CIncrease Flex Cable to

3 inches5-39831 6/24/99LPP

D

Width Coil (L3) inductance range changed

Width Coil Inductance

(L3) increased

B

LPP

5-40006 LPP 7/23/99

U4.2

U1.2

u1.7

u1.6

u1.5

vcadj+ vcadj-

vadj

U1.3

u2.2

ramp

q4.b

q3.b

u2.7 u2.6

vert-

hlin hwide

+12filt

q5.c

q5.b

hor+

vert+

q1.b

q1.e

J3.5

J3.6

tube.g4

u4.4

q2.b

q6.d

vcadj

d6.c

Boost

Hor

+B

d5.c

Focus

Vg1

Vd

Vg2

d4.a

J3.1

u4-6

Grid2

C22-2

Video

Hsync

Vsync

Grid1

vidout

tube.vd

tube.g2

J3.3 tube.12V

tube.g1

tube.gnd

tube.g1

j2-3

hor-

q7-g

q8-b

q8-e

u2.1

21

12

2

1

3

4

1 2

21

1 2

1

2

3

4

5

6

12

1 2

12

10

9

7

1

3

5

2

8

1

2

3

4

5

6

7

13 12

12

5 6

11 10

1

2

3

3

2

1

84

1

2

3

4

5

6

3 4

VIN3

VOUT1

GN

D2

5

6

7

84

1

2

3

4

5

6

1

2

3

4

5

3

2

13

2

1

3

2

1

3

2

1

21

3

2

1

9 8

3

2

1

84

5

6

7

84

1 2

21

3

2

1

21

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

L3

15- 35uH

E1

R24

10K

D6

1N4148

C13

22uF

+

Q6

IRF640

D3

1N4935

R28

19.6K

R43

5.11K

E2

D5

1N4937

J1

CON6

R3

23.7K

D4

1N4935

D2

MUR120

C14

.01uF

R15 38.3

R17 10

C1

.1uF

R9

1.47K

D1

1N4148

R23

10K

R45 330

T1

CRT-FBT

To CRT

Anode

J4

CRT-Socket

U4F

74HCT04

C17

.01uF

D7

1N4148

U4C

74HCT04

R10 1K

R51

19.6K

U4E

74HCT04

C16

.01uF

R7

41.2K

Q7

BS170

U2A

MC34072

+

-

R16 10

J3

Flex6

R1

1K

R44 330

U4B

74HCT04

R2

7.50K

R26

1K

R11

1.96K

R50

1.96K

U3MC78L05ACP

R29 100K

U1B

TLC272

+

-

C7.047uF

R25

215

R12

562

C6.047uF

R37

1.96K

C15

.01uF

C8

.022uF

J3x

Flex6

R36

1.96K

C19.01uF

C9

6.8uF

R48

100

R8

41.2K

L1

47uH

R6

41.2K

R41

681

R13

169

R27

10

C2

100pf

J2

CON5

C3.047uF

R18

562

Q2

MPSW51A

C18.047uF

C20

No Load

Q1MPSW01A

R52

1.96K

R14

562

C22

.022uF

R30

100K

C1222uF

+

R20

169

Q8

2N3904

Q4

MPSW51A

R31

10K

E5

Q3

MPSW01A

R21

562

U4D

74HCT04

R19

562

U1A

TLC272

+

-

U2B

MC34072

+

-

R22

10K

C4

.047uF

C522uF

+

U4A

74HCT04

R47 47K

E4

R46 47K

C11

1000uF+

R4

10K

C10

1000uF

+

R5

42.2K

Q5

2N3904

E3

L2

15uH

R32

2.5Meg

+12V

+12V

+12V

+12V+12V

+12V

+12V

+12V

+12V

+12V

+Vvid

+Vvid

+5V

+5V

+5V

+5V

+5V

+5V

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620011 D

CRT Deflection Board

C

1 1Friday, July 23, 1999

Page 175: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 165

Figure D-18. CRT deflection board.

Printhead

On/Off Switch

Temperature

Amplifier

Thermistor

Input

+24V Boost

(23.6 V nominal)

1

2

3

4

phase +

Connector Pin #

1 3 4 6

+

+ +

+ +

++

Printhead

Connector

Rick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

620014.dsn

5-39179 JAC 3/18/99 LPP

L.Phillips

Z. Psenicnik

J. Bello

3/22/99

3/19/99

3/19/99

Place Bead onPin 2 of Q4

BAdd EMI bead to Q4, improve

radiated emissions5-41395 JB 5/9/00

Rec-Data

U2-fb

Rec-Data-Latch

Q4-D

Rec-Supply-On

U2-comp

U3-10

U1-1

Q4-

G

U1-2

Rec-Strobe

Rec-Clock

U2-

Isen

se

+12V

Q6-e

U2-

ou

t

U3-8

Q4-s

U3-9

Strobe

+24V-switch

Clock

Latch

Strobe

Data

u3-clk

Rec-Motor-Step

clk

data-IO

U3-7

U2-RT

J3-6

u6-6

J3-3

J3-4

u6-clmp

u6-14

u6-11

J3-1

u6-3

U3-5

U3-6

d6-c

Thermistor2

Thermistor1

U1-3

q1-g

Q2-b

U3-3

n24Von

U2-Ref

Vpp

Vpp

u1-7

23

1

4

5 6

3 4

11 10

3

1

2

1

3

2

3

1

2

1

2

3

4

5

6

13 12

13

1B3

2B6

3B11

4B14

1C2

2C7

3C9

4C16

CLMP11

CLMP28

VFB3

ISENSE5

RT/CT7

VREF14

COMP1

OUT10

PWR-

GN

D8

Vcc

12

GN

D9

Vc

11

31

2

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

5

6

7

84

3

2

1

84

ClkIn/Osc1/RB52

RC5/TOCK15

RC37

Vpp/MCLR/RB34

Clkout/Osc2/RB43

RC46

Vd

d1

Vss

14

RC28

RC19

RC010

RB211

RB112

RB013

2

1

3

4

13

9 8

1 2

1

3

5

7

9

11

13

15

17

19

21

23

2

4

6

8

10

12

14

16

18

20

22

24

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

C14

2200pF

Q4

MTP30N06VL

TP27

U5C

74HCT14

C18

.047uF

U5B

74HCT14

R22

4.22K

C11

.047uF

TP29

U5E

74HCT14

R19

3.16K

TP28

R13

10

Q6

MMBT3904L

TP14

R6

10K R15

147

R16

19.6K

TP8

D3

BAV99L

R2

1K

TP10

R8 23.7K

R36

1.47K

Q2

MMBT3904L

TP24

R14

10K

C6

1uF+

J3

CON6

TP67

C41000uF

+

C3

.01uF

TP66

C81800uF

+

C5 .01uF

TP68

L122uH

TP17

C2

.01uF

R7

84.5K R5

1K

R9

10K

C135600pF

C10

.1uF

D2

MBRS340T3

U5F

74HCT14

D6

27V

U6

ULN2065

R24

1.96K

U2

UC3843A

C12

.047uF

TP9

R18

no-load

TP21

TP3

R35

1.47K

TP1

Q3

2N7002

R12

10K

TP19

J2

CON16

U1B

MC34072

+

-

C21

.047uF

TP23

R33

1.47K

R3

10K

U1A

MC34072

+

-

TP6

U3

PIC16C505

Q1

MTP30P06V

C19

.047uF

R11

5.11K

D1

27V

C1

.047uF

C20

47uF

+

U5D

74HCT14

U5A

74HCT14

R10

10K

C7

.01uF

TP54

R34

1.47K

TP26

R17

0.1

J1

CON24A

R1

51.1K

R4

9.09K

E1

2643000301

+12V

D

+5V

+5V

D

+5V

D

+5V

D

+5V

D

+5V

+5V

D

+5V

D

D

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

+24V

A

+5V

D

A

D

A

+24V

A

A A

A

A

A

+5V

+5V

+5V

A

A

Rec-Temp

+5V

+12V

+5VRecVdc

+24V

RecVdc

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620014 B

Printer Electronics

C

1 1Thursday, May 11, 2000

Page 176: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 166

Figure D-19. Printer electronics.

Figure D-20. Model 220 main board.

Front Panel

Display Connector

Main PCA

Connector

Recorder Board

Connector

CRT Board

Connector

EKG - Page6

Speaker Drive

Serial

DataOut

4Vpp max.

NIBP - Page 2

SpO2 - Page4

EKG - Page4

To PIC

CO2 Board

Connector

Serial IO - Page8

Page1

(Front Panel Key)

(To U2)

(pg 3)

(pg 1)

Fan

Connector

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

5-39121 JAC 3/15/99

L. Phillips

LPP

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet

D

Improvements for ESD, RFI,

and Fast Transients, Correct

Respiration Diff-Amp Topology

5-39455 LPP LPP4/27/99

5-39821 LPP 6/24/99

E

Mods to U2 clock line, Resp

gain amp, ECG supply and

NVRAM pullup5-39936 LPP 7/9/99

LPP

LPP

F

Buffer for ETCO2, Nurse call relay

Modify RLD to reduce V-Lead noise

Improve ESU rejection

G

SpO2 bypass cap, RS232 PS mods

4KV nurse call relay,Improve CMRR for Resp Topology

5-44461 3/26/02LPP JK

JK5-44857 LPP 7/18/02

U7-wc

SPI-Data-Out

Spare-3

NIBP-15mmHg

NIBP-Data

Spare-2

SCL

Video-Data

SCD

SPO2-Tx

LED-Data-b

NIBP-Safety

Video-Data

hReset

NIBP-OP

Video-VSync

Video-HSync

Video-VSync

Video-HSync

Speaker-Audio

SPI-data-in

SPO2-Rx

SPO2-Rx

NIBP-PWM-ADC

NIBP-Valve-Close

Vbackup

RS232-CTS

EROM-wr

ETCO2-Tx

FE-Clock

EKG-Data-Clock

PIC-Data

LED-Latch-b

LED-Latch

Key-Latch-n

RS423-Rx

RS423-Tx

Nurse-Call

Batt-ID

q2-c

Q1-e

+3.3V

Q2-b

ACON-LED

PIC-audio

NIBP-Offset-DAC

NIBP2-PW-ADC

LED-Data

Key-Latch-n-b

LED-On

LED-On

PIC-Clk

U2-Clk

SPI-Clock

Key-clock

Key-Clock-b

Rec-Clock

Rec-Motor-Step

Rec-Clock

Rec-Data-Latch Rec-Strobe

Rec-Data-Latch

Rec-Strobe

PIC-Vprog

Rec-Data

Rec-Motor-Step

Rec-Supply-On

Audio-Shutdown

SMR17-1

U9-

4SP

U9-3

Audio-Shutdown

U8-10

EKG-ADC-Clock

Power-Sync

ADC-Clock

EKG-PWM-ADC

Power-Sync

FE-Data

FE-Data

ETCO2-TX-B

Key-Data

ETCO2-Rx

1

2

3

4

5

6

7

3 4

11 10

56

5 6

3

4

1 672

8

5

11

33

55

77

99

1111

1313

1515

1717

1919

2121

2323

2525

2727

2929

3131

3333

3535

3737

3939

4141

4343

4545

4747

4949

5151

5353

5555

5757

5959

22

44

66

88

1010

1212

1414

1616

1818

2020

2222

2424

2626

2828

3030

3232

3434

3636

3838

4040

4242

4444

4646

4848

5050

5252

5454

5656

5858

6060

12

12

13

11

+1

+3

+5

+7

+9

+11

+13

+2

+4

+6

+8

+10

+12

+14

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

1

2

3

1

2

3

4

5

6

1

2

3

3

1

2

12

1

2

4

5

6

3

1

2

13 12

1

2

3

13 12

1

2

3

4

3

1

2

9 8

9 8

ClkIn/Osc1/RB52

TC5/TOCK15

RC37

Vpp/MCLR/RB34

Clkout/Osc2/RB43

RC46

Vd

d1

Vss

14

RC28

RC19

RC010

RB211

RB112

RB013

9

10

8

11 10

3 4

A01

A12

A23

SCL6

WC7

SDA5

1

3

5

7

9

11

13

15

17

19

21

23

2

4

6

8

10

12

14

16

18

20

22

24

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

J1

CON7

U1B

74HCT04

U8E

74HCT04

C37

0.1uF

U1C

74HCT04

TP14

TP13

TP15

C7

330uF+

U8C

74HCT04

U9

TPA301

+

-

C8

.047uF

TP12

J4

Socket 30x2

U8A

74HCT04

R2

1.96K

TP18

R19

19.6K

R4

10K

U3D

74HCT08

J8

CON14AP

U2

74HCT595

R5

19.6K

C36

4.7uF

+U3A

74HCT08

C22

.047uF

TP17

C39

.047uF

J6

CON6

J2

CON3

TP23

C1

.047uF

TP24

Q2

MMBT3904L

U1A

74HCT04

C20

.047uF

R8

1.96K

R15

1.96K

J5

CON2

TP16

C23

.047uF

C29

.047uF

R16

3.48K

U3B

74HCT08

TP19

Q3

2N7002

R21

10K

TP1

U8F

74HCT04

J11

CON3

TP2

TP22

R6

1.96K

TP20

TP3

R3

10KTP21

TP4

R1

10K

U1F

74HCT04

J3

CON4

R20

10K

C41

1uF+

TP26

C40

.047uF

Q1

MMBT3906L

C4

330uF+

R22

10K

U8D

74HCT04

U1D

74HCT04

TP11

C14

.047uF

C5

.047uF

U10

D620361-MX10000

R23

1.21K

U3C

74HCT08

C42

.047uF

R24

1.21K

C6

100uF+

U1E

74HCT04

U8B

74HCT04

TP7

C3

220pF

C38

220pF

C30

.047uF

TP9

TP5

U7

AT24C02N-10SC-2.7

TP25

TP10

J7

CON24A

TP6

C35

4.7uF

+

TP8

R25

1.21K

R17

19.6K

R18

1.21K

C2

.047uF

+5V

+3.3V

+5V

D

D

D

D

D D

D

D

D

D

DD

D

D

D

D

D

D

+5V

D

+5V

D

+5V

D

+5V

D

D

D

+5V

A D

+3.3V

D

DD

+5V

+5V

D

D

+5V

+3.3V +5V

+5V

+5V

D

D

D

D

+5V

+5V

+12V

+5V

D

D

+5V

D

D

+5V

+5V

+5V

D

+5V

Vbackup

FE-Data-Clock

FE-ADC-Clock

FE-Data-In

+12V

NIBP-15mmHg

NIBP-Safety

NIBP-PWM-ADC

NIBP-Offset-DAC

NIBP-ADC-Clock

NIBP-Overpressure

NIBP-A/D-SelA

SpO2OutNIBP-Valve-Close

NIBP-Pump-On

NIBP-A/D-SelB

NIBP-A/D-SelC

FE-Pwr-Sync

On/Off-Key

ac-on

+3.3V

U2-Reset

PIC-Data

RS423Rx

RS423Tx

NurseCall

AC+12V

Rec-GND

Battery

+3.3V

ac-on

AC+12V-fuse

ACON

+12V

Rec+DCV

Rec-GND

Rec-GND

Rec+DCV

Rec-GND

+12V

PIC-Clk

U2-Reset

PIC-Data

Vbackup

On/Off

Batt-ID

On/Off-Key

Print-Temp

+5V

Rec-Supply-On

Rec+DCV

FE-PWM-ADC

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620017 G

Main Board - Model 220

C

1 8Monday, August 05, 2002

Page 177: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 167

Figure D-21. 210/220 NIBP electronics.

A/D Mux

Zero Adjust

+/-20mmHg range

PWM A/D

Converter

0mmHG = 0.5V

300mmHG = 4.0V

PWM D/A

76.8KHz

Primary

Transducer

NIBP

PWM A/D

Converter

Zero

Offset

Safety

Transducer

Over Pressure

Fault Circuit

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

3/15/99JAC5-39121 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet

D

Improvements for ESD, RFI,

and Fast Transients, Correct

Respiration Diff-Amp Topology

5-39455 LPP 4/27/99 LPP

6/24/995-39821 LPP

E

Mods to U2 clock line, Resp

gain amp, ECG supply and

NVRAM pullup

F

Buffer for ETCO2, Nurse call relay

Modify RLD to reduce V-Lead noise

Improve ESU rejection

G

SpO2 bypass cap, RS232 PS mods

4KV nurse call relay,Improve CMRR for Resp Topology

5-39936

5-44461

LPP

LPP

7/9/99

3/26/02

LPP

LPP

7/18/025-44857 LPP

JK

JK

D201-C

U208-2

U210-7

U204-7

U204-5

U203-3

U203-5

C207-1

U204-3

U204-2

U205-7

U206-6

U206-1

P202-Out-

U206-7

U206-2

U202-3

P202-2

P202-5

U202-5

U208-1

u207-9

PrimaryPres

P4.25V

SafetyPres

U208-3

P201-Out

P201-6

U204-1

U209-Out

U203-6

P202-Out+

U210-2

U210-3

U203-2

Q201-B

P.75V

+5V/2

U205-3

Q202-G

Pump-

Pump+D20

1-A

Valve-

Valve+

U207-3

P201-pwr

U208-7

3

2

1

84

3

2

1

84

IN8

OUT1

GN

D2

GN

D3

GN

D6

GN

D7

3

2

1

84

5

6

7

84

3

1

2

5

6

7

84

1

3

2

5

6

7

84

1

3

2

1

2

3

6

5

6

7

84

4

5

6

2

3

61 4

7

5

8

1

2

5 67

3

4

1

2

3

5

6

7

84

3

2

1

84

5

6

7

84

1

2

3

4

5

9

10

8

12

13

11

3

2

1

84

2

1

3

5

6

3

2

1

84

8

1

2

5 67

3

4

X013

X114

X215

X312

X41

X55

X62

X74

INH6

A11

B10

C9

X3

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

U203A

LM393

+

-

C215

.047uF

U202A

MC34072

+

-

C225

.047uF

C224

1000pF

U201

78L05

TP214

R233

3.48K

U208A

MC34072

+

-

TP206

R221

3.16K

C213

.01uF

R232

10K

R230

10K

C2024.7uF

+

R242

10K

C222

.01uF

U205B

MC34072

+

-

R231

73.2K

TP217

Q201

MMBT3904L

U206B

MC34072

+

-

C223

.01uF

TP225

D202

BAV99L

R240

10K

R235

3.48K

R229

1.96K

U203B

LM393

+

-

R241

10K

R237

464K

D201

MMBD1503A

L201

220uH

TP228

C220

.01uF

R243

100K

XFPM-050KPGR-P1

P201

Gain

and

Comp

U202B

MC34072

+

-

TP207

U207B

74HCT00

TP231

TP210

C232

.047uF

U210

MAX941

+

-

C201

.047uF

TP211

TP201

TP204

C229

10uF+

TP237

C212

680pF

TP240

TP232

C221

.047uF

Q202

MMDF2N02E

TP234

C205

.047uF

R214

10K

C209

.047uF

TP226

R219

1.96K

C211

.047uF

R246

31.6

C226

.047uF

C216

.047uF

R215

100K

C231

.01uF

U207A

74HCT00

C204

.047uF

TP221

C227

680pF

TP222

C207

1uF+

R216

19.6K

U204B

MC34072

+

-

R239

1K

R201

576

C208

1uF+

U204A

MC34072

+

-

C203

.047uF

TP235

TP224

R203

3.32K

R205

750

C210

.047uF

TP212

TP208

R244

21.5K

TP213

C206

.047uF

TP215

TP220

U208B

MC34072

+

-

L202

Bead

R227

5.11K

R236

3.83K

J201

CON5TP219

R223

21.5K

U207C

74HCT00

R222

1K

R228

1.96K

R224

1K

C230

.047uF

U207D

74HCT00

TP239

TP236

R225

1K

U205A

MC34072

+

-

TP202

R211

1.96K

R226

21.5K

R208

1.96K

C217

.047uF

FPNS-07PGR

P202

-+

C218

4.7uF+

C219

.047uF

C228

.047uF

R247

1K

TP209

R204

150

R248

1K

R218

23.7K

R202

174

R217

5.62K

R212

56.2K

R234

3.48K

U206A

MC34072

+

-

R213

237K

Q203

MMDF2N02E

R209

1K

TP227

TP216

R207

464K

TP229

R220

806

R210

464K

U209

4051

TP233

TP238

TP203

R206

1K

TP230

C214

.047uF

P+12V

P+12V

P+12V

P+12V

P+12V

+3.3V

+3.3V

P+12V

P+12V

P+12V

P+12V

P+12V

P+12V

+12V

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

AA

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

A

AA

A

A

A

A

P+12V

A

A

NIBP-Offset-DAC

NIBP-ADC-Clock

P+.75V

NIBP-Safety

NIBP-PWM-ADC

P+12V

5VRef

NIBP-Overpressure

NIBP-15mmHg

Print-Temp

NIBP-A/D-SelB

+12V

+3.3V

+5V

P+.75V

NIBP-A/D-SelA

NIBP-A/D-SelC

BattCurrent

BattVoltage

+5V +Vpump

NIBP-Pump-OnNIBP-Valve-Close

P+5V

P+5V

P+5V

P+5V

P+5V

P+5V

P+5VP+5V

P+5V

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620017 G

NIBP ELECTRONICS

C

2 8Monday, August 05, 2002

Page 178: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 168

Figure D-22. DC/DC power supply.

On/Off Switch

+12V Boost

(12.1V nominal)

Float Voltage

On/Off Circuit

18V Boost - Mosfet Gate Voltage

Current Limit

(1.5 Amp)

+5V Linear

LowDropout

BatteryCharger

Heatsink

forQ312

Ibatt=0: BattCurr=0.74V

Ibatt=1.5: BattCurr=2.87V

Heatsink

for D301

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

5-39121 JAC 3/15/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet LPP LPP5-39455 4/27/99

5-39936

F

E LPP

LPP

LPP

5-39821

Mods to U2 clock line, Resp

gain amp, ECG supply and

NVRAM pullup7/9/99

D

Improvements for ESD, RFI,

and Fast Transients, Correct

Respiration Diff-Amp Topology

LPP 6/24/99

Buffer for ETCO2, Nurse call relay

Modify RLD to reduce V-Lead noise

Improve ESU rejection

G

SpO2 bypass cap, RS232 PS mods

4KV nurse call relay,

Improve CMR for Resp Topology

5-44461 LPP 3/26/02 JK

JK7/18/02LPP5-44857

U30

4-1

Q30

6-b

U301-ct

U30

5-1

U302-pwr

Q302-c

U305-6

Q305-d

Q307-e

Q308-d

U302-comp

U302-fb

U304-5

C324-2

U302-ct

Q31

0-b

U304-3

Q30

5-s

U303-ct

Q304-e

RT301-1

U303-5 U305-pwr

R339-2

Bat-Adj

U304-7

U30

5-2

Q306-c

D307-A

U302-sense

U305-3

Bat-fuse

U30

2-ou

t

Q308-g

U304-2

V+18V

I-Batt

Q309-3

U304-6

C319-1

Q312-g

U301-comp

Q309-b

U305-5

C305-1

D312-c

Q313-d

Q314-d

U301-sw

U30

3-ou

t

U301-pwr

U301-7

Q30

5-g

u307-6

Batt-fb

U303-fb

U303-cp

D304-C

L302

-1

Q303-s

Q302-B

Q301-b

C33

9-1

Q310-c

D309-a

R343-1

F302-2 AC+12V-fuse

23

1

4

1

3

2

4

IN1

OUT3

GN

D2

1

3

2

2 3

1

4

1

3

2

13

5

6

7

84

COMP5

TCAP3

IPK7

IDC8

ISWC1

ISWE2

Vcc6

GN

D4

3

1

2

3

2

1

84

1

3

2

23

1

4

1

3

2

VFB3

ISENSE5

RT/CT7

VREF14

COMP1

OUT10

PWR-

GN

D8

Vcc

12

GN

D9

Vc11

3

2

1

84

13

2

VFB3

ISENSE5

RT/CT7

VREF14

COMP1

OUT10

PWR-

GN

D8

Vcc

12

GN

D9

Vc11

3

1

2

VIN8

FDBK7

SHTDN3

TAP6

SENS2

VOUT1

ERR5

3

1

2

1

3

2

3

1

2

3

1

21

3

2

3

1

2

3

2

1

3

1

2

5

6

7

84

3

1

2

2

1

3

4

2 3

1

4

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

Q305

MTP30N06VL

TP321

TP340

D301

MBR2535CTL

C326

.01uF

U306LF33CV

TP335

C323

100uF+

R333

19.6K

C325

100uF+

TP322

C322

.047uF

D308 BAV99L

R347

10K

Q312

MTP30N06VL

R350

10K

TP345

L305

Bead

R306

61.9K

TP302

TP341

D302

BAV99L

R339

19.6K

F303

4Amp

C305

5600pF

D303

5.1V

TP304

TP323

C3314.7uF

+

U305B

MC34072

+

-

R335

4.32K

C306

1uF+

C3324.7uF

+

TP355

TP348

R311

10K

TP331

TP328

R349

10K

U301

MC34063AD TP307

Q310

MMBT3904L

TP315

U304A

MC34072

+

-

R341

10K

TP346

D309

BAV70L

D310

MBRS340T3

TP330 R332

19.6K

C314

.047uF

C333

.047uF

TP306

C3121000uF

+

C307

.047uF

R353

5.11K

R319

19.6K

R331

33.2K

HS302

6078

C337

.047uF

R302

1.96K

Q311

MTP30N06VL

R301

10K

C319

1000uF+

R310

10K

C324

1000pF

TP332

D312

BAV99L

U302

UC3843A

R312

3.83K

TP316

C340

.047uF

TP305

TP350

R355

14.7K

R304

100K

C3095600pF

R327

0.1

C302

1uF+

C3101000uF

+

U305A

MC34072

+

-

D304

MBRS340T3

L30222uH

R344

10K

R325

1.96K

L306

Bead

R307

4.64K

TP329

TP347

R338

1K

C301

330uF+

R324

10K

R322

10K

U303

UC3843A

L304

47uH

Q307

MMBT3904L

R340

10K

RT301

10K

t

R318

10K

U307

LP2951CD-3.3

R329

1K

Q313

2N7002

R337

8.87K

D311

BAV70L

F301

4Amp

Q314

2N7002

Q306

MMBT3904L

R334

19.6K

R315

196

D305

BAV99L

Q304

MMBT3904L

R330

33.2K

C338

.047uF

C335

.047uF

C316

2200pF

Q301

MPSW51A

TP336

R345

10K

C329100uF

+

C327

.047uF

C339

1uF+

R303

51.1K

Q309

MMBT3906L

D306

MBRS340T3

C318

330uF+

U304B

MC34072

+

-

C330

.047uF

TP339

D307

MBRS340T3

Q302

MMBT3904L

TP337

R323 1.96K

R352

5.11K

TP326

R313

1.96K

C328

.047uF

TP324

R326

10

TP354

C3111000uF

+

R354

5.11K

C304

100uF+

R314

10

TP317

TP313

C315

.047uF

R351

5.11K

TP311

R348

10K

Q308

MTP23P06V

TP338

R346

100

TP320

Q303

MTP30N06VL

TP351

TP318

TP343

R342

19.6K

F302

4Amp

R309

4.64K

C303

470pf

C334

.047uF

TP342

TP352

TP314

C321

.01uF

TP312

R320

7.5K

TP333

TP349

C313

330uF+

R317

7.5K

R336

7.5K

C320

.01uF

L303

Bead

C336

.047uF

C308

2200pF

R305

1

TP309

R343

10K

R316

0.1

TP308

R328

1K

R321

27.4K

L3011mH

TP310

TP344

R308

17.8K

TP319

TP334

TP353

HS301

6078

+12V

+12V

D D

D

DDD

+12V

D

+5V

5VRef

5VRef

Ref-Batcharge

+12V

ACON

ACON

Ref-Batcharge

Battery

On/Off

+5V

AC+12V

+Vpump

Ref-Batcharge

VBackup

+3.3V

BattVoltage

BattCurrent

AC+12V-fuse

AC+12V-fuse

AC+12V-fuse

AC+12V-fuse

Rec+DCV

+Vfuse

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620017 G

DC/DC Power Supplies

C

3 8Monday, November 04, 2002

Page 179: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 169

Figure D-23. Power isolation/SpO2 interface.

Isolation

Barrier

Isolated SpO2Circuits

Grounded SpO2Circuits

Nonin SpO2Connector

Nellcor SpO2Connector

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

3/15/99JAC5-39121 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet

SpO2 ESD

Ground

5-39455 LPP LPP4/27/99

LPP

6/24/995-39821

LPP

D

Mods to U2 clock line, Resp

gain amp, ECG supply and

NVRAM pullup7/9/99

F

Improvements for ESD, RFI,

and Fast Transients, Correct

Respiration Diff-Amp Topology

LPP

5-39936E

LPP

Buffer for ETCO2, Nurse call relay

Modify RLD to reduce V-Lead noise

Improve ESU rejection

G

SpO2 bypass cap, RS232 PS mods

4KV nurse call relay,

Improve CMR for Resp Toplogy

5-44461 LPP 3/26/02

5-44857 LPP 7/18/02

JK

JK

U402-1

C409-1

T401-4

Q40

1-g

U402-sen

opto-fb

iso401-a

Q40

2-e

Q401-s

U401-1

C408-2

U401-2

iso401-b

sSpO2tx

Q403-e

sSpO2tx

U402-e

U402-ref

U402-rt

iso402-a

U401-5

U401-3

U403-fb

f-V

f+V T401-1

T401-8

U401-7

R419-2

U402-ct

U411-6

1

2

5

6

7

84

3

2

1

84

5

8

1

2

3

4

IN8

OUT1

GN

D2

GN

D3

GN

D6

GN

D7

1 6

2

5

4

+1

+3

+5

+7

+9

+11

+13

+2

+4

+6

+8

+10

+12

+14

2

3

8

6

5

1

3

2

IN2

OUT1

IN3

IN6

IN7

GN

D5

1

2

3

4

VIN8

FDBK7

SHTDN3

TAP6

SENS2

VOUT1

ERR5

V-1

V+2

VREF16

VIN

15

COMP9

+SENSE4

-SENSE5

SHTDWN10

RT6

CT7

CA12

EA11

CB13

EB14

OSCOUT3

GN

D8

3

1

2

3

1

2

23

1

4

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

C43110uF

+

TP451

TP459

J403

Tab-.187

U401B

LM358

+

-

C432

10uF

+

TP466

TP462

U401A

LM358

+

-

TP464

R405

215

TP455

R423

5.11K

C404

.047uF

C409

470pf

C436

1000pF

R414

1.96K

T401

IsoXfmr

TP463

C411

2200pF

TP452

C401

.047uF

C403

.047uF

TP460

R412

511

R424

10K

R417

10K

TP449

TP461

C406

100uF+

C417

680pF

C437

330uF+

TP453

R415

100

TP467

TP465

TP454

C430

.047uF

C407

100uF

+

D403

MBRS130T3

U407

78L05

R404

196K

TP450

D401

MBRS130T3

C416

.047uF

R401

10K

C405

100uF+

C43410uF

+

L401

220uH

U410

4N25

TP468 L402

220uH

J402

CON14AP

TP456

C429

.047uF

C402

.047uF

C420

.047uF

R411

5.11K

R407

10

U411

HCNW4503

D405

BAV99L

R403

1K

R409

5.11K

R408

100

TP457

C410

.01uF

C435

10uF

+

U404

79L05

C413

.047uF

R406

0.2

J401

CON4

R419

215

C414

.047uF

U403

LP2951C

R410

7.5K

TP469

C418

4.7uF+

R422

10K

C433

470pf

U402

LM3524DM

C41210uF

+

Q402

MMBT3906L

TP458

C408

.01uf

R402

10K

C41910uF

+

Q403

MMBT3904L C422

.047uF

R416

10K

C415

1uF+

Q401

MTD3055V

C424

.047uF

C421

1uF

+

C42810uF

+C427

.047uF

S

S

S

S

S S

iso+5Vdig

S

S

S

S

ED

ED

SS S

S S

S

SS

S

S

SS

S

S S

S

S

S

S

S

ED SE

S

S

S

S

S

FE-Pwr-Sync

SpO2Out

+5V

+12V

+12V

s+5V

f+V

+5V

fVcc

fVee

f+5V

f+V

SpO2-Reset

s+5V

iso+5Vdig

s-5V

s-5V

s+5V

iso+5Vdig

s+5V

f+V

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620017 G

Power Isolation and SpO2 Interface

C

4 8Monday, August 05, 2002

Page 180: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 170

Figure D-24. 210/220 ECG amp.

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

5-39121 JAC 3/15/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet

D

4/27/995-39455 LPP LPP

Improvements for ESD, RFI,

and Fast Transients, Correct

Respiration Diff-Amp Topology

5-39821 LPP 6/24/99

5-39936

F

E LPP LPP

Mods to U2 clock line, Resp

gain amp, ECG supply and

NVRAM pullup7/9/99

0.1%

Input Buffers

Gain = 9.26

0.1%

U503

Gain Stage

Gain = 74

0.1%

Defib Protect

Clamp voltage for Temp

and Resp circuits

U506

Wilson

Network

ESU filter

0.1%

Lead Select

0.1%

0.1%

U507

A/D Inputs

Leads Off

Shield

U504

Diff Amp

Gain = 1

0.1%

U502 U508

0.1%

0.1%

0.1%

No Load,

Allows RLD switch

to V-Lead, not used.

0.1%

U501 U505

0.1%

RLD Amp

V-Lead Defib Protect,

Diodes internal to U504

protect other inputs.

High Pass (0.05Hz or 0.5Hz)

Low Pass (150Hz)

Buffer for ETCO2, Nurse call relay

Modify RLD to reduce V-Lead noise

Improve ESU rejection

G

SpO2 bypass cap, RS232 PS mods

4KV nurse call relay,

Improve CMR for Resp Toplogy

5-44461 LPP 3/26/02

LPP

JK

JK5-44857 LPP 7/18/02

U503-5

Q504-g

U501-3

LA

diff-out

U501-5

C514-2

-clamp

C538-1

U501-6

LA

mux-

C537-1

u509-4

U501-2

R509-1

diff-

V-

Q504-d

Q50

1-S

C540-1

U502-2

U508-5

Right-Leg

C504-1

C505-1

C502-1

RA

Left-Leg

R511-1

diff+

C503-1

V-Lead

C539-1

ecg-hp

R515-1

mux+

U502-6

C501-1

U508-2

+clamp

V+ U50

8-1

U503-2

LL

RA

LL

aVR

Left-Arm

R513-1

aVL

U502-5

U508-3

U502-3

Q501-G

C541-1

Right-Arm

U508-6

RL-mux

LA

aVF

Q504-s

LL

5

6

7

84

3

2

1

84

3

1

23

1

2

3

2

1

84

5

6

7

84

5

6

7

84

4

3

1

25

1

3

2

3

1

2

1

2

3

4

5

6

13

S13

IN11

S214

IN216

S311

IN39

S46

IN48

V+13

V-4

GND5

D12

D215

D310

D47

1 3

3

2

1

84

5

6

7

84

5

6

7

84

3

2

1

84

3

2

1

84

3

1

2

X013

X114

X215

X312

X41

X55

X62

X74

INH6

A11

B10

C9

X3

X013

X114

X215

X312

X41

X55

X62

X74

INH6

A11

B10

C9

X3

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

C520

.047uF

TP542

R559

22Meg

R517

10K

C530

.047uF

C525

.047uF

R555

30.1K

TP505

C506

100pF

C526

.047uF

R556

10K

U507B

TL072

+

-

U507A

TL072

+

-

TP539

TP501

N501

LAMP NEON

C528

.047uF

Q504

2N7002

C546

NL

R544

10K

C532

.047uF

R501

19.6K

TP559

R563

73.2K

C527

.047uF

C501

330pF

R547

10K

TP538

R508

10K

C531

.047uF

R549

110K

C536

.01uF

TP524

C533

.047uF

TP540

TP530

R552

1K

C538

220pF

TP518

C529

.047uF

R560

22Meg

TP509

R551

73.2K

R509

22Meg

TP551

C540

220pF

N502

LAMP NEON

TP517

R526

10K

TP533

R502

19.6K

TP521

C517

.01uF

C505

330pF

C544

1000pF

Q505

2N7002

R510

10K

U501A

TL072

+

-

C504

330pF

TP562

C539

220pF

TP513

R519

10K

C509

100pF

TP511R562

73.2K TP558

U502B

TL072

+

-

R520

1.21K

TP543

U508B

AD712

+

-

R511

22Meg

R548

1Meg

N503

LAMP NEON

TP550

C515

3.3uF

R514

10K

TP534

TP514

R557

22Meg

TP560

R550

19.6K

R503

19.6K

TP549

TP541

U509

LMC7101

-

+

D505

MMBD1503A

TP515

C542

220pF

TP503

TP531

R567

NL

R512

10K

TP537

C535

4.7uF

+

TP527

TP544

R561

73.2K

TP512

C534

4.7uF+

C523

.047uF

Q502

NL

TP519

R521

10K

C519

.047uF

R545

10K

TP545

R513

22Meg

TP510

TP523

R523

10K

J501

CON6

R553

100K

TP536

TP504

D506

5.1V

C503

330pF

R565

121K

U504

DG202CSE

R524

1.21K

TP508

R515

22Meg

D507

5.1V

TP535

N504

LAMP NEON

R518

1.21K

TP520

R504

19.6K

U503A

TL072

+

-

R522

1.21K

C543

.047uF

TP502

TP522

TP547

TP557

U501B

TL072

+

-

C510

220pF

TP526

U503B

TL072

+

-

C511

220pF

C537

220pF

N505

LAMP NEON

C512

220pF

C513

220pF

TP507

U508A

AD712

+

-

C508

100pF

R516

10K

R564

73.2K

C507

100pF

U502A

TL072

+

-

R505

19.6K

C541

220pF

R530 10K

R566

73.2K

C502

330pF

R531 10K

TP532

C545

1000pF

R558

22Meg

R533 10K

R527

1K

R535 10K

C514

0.1uF

TP506

Q501

NL

TP525

R536 10K

R528

51.1K

C516

.047uF

R537 10K

TP552

R525

10K

R507

10K

TP516

TP548

C518

.047uF

R532 10K

R529 10K

R534 10K

C522

.047uF

C521

.047uF

U505

4051

TP529

TP561R506

10K

R546

10K

C524

.047uF

U506

4051

TP528

E

E

E

E

S

E

S

E

E

fVee

S

E

E

E

fVee

fVcc

fVcc

E

fVcc

E

fVcc

fVee

E

E

E

fVcc

E

E

E

fVcc

fVee

E

E

E

fVee

E

E

fVee

S E

E

E

E

E

fVcc

E

fVee

E

E

E

fVcc

E

E

fVcc

E

fVcc

fVee

fVee

fVee

E

E

S

E

fVee

E

E

fVee

fVcc

fVcc

fVcc

E

E

E

fVee

EE

E

E

E

E

fVee

fVcc

fVee

E

fVcc

E

E

E

E

fVcc

fVee

Sw-RLD-V

f+1.24V

RA

+clamp

V+

fVee

Mux-LdS-B

f+5V

Left-Arm

VLdsOff

-clamp

vRL

VLdsOff

Mux-LdS-C

VLdsOff

LA

Sw-RLD-RA

Sw-RLD-LA

An-ECG

VLdsOff

LL

Right-Arm

Sw-MonBw

VLdsOff

Mux-LdS-A

Sw-RLD-RL

fVcc

Sw-RLD-LL

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620017 G

ECG Amp

C

5 8Monday, August 05, 2002

Page 181: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 171

Figure D-25. 210/220 ECG A/D interface.

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

3/15/99JAC5-39121 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet 5-39455 LPP 4/27/99

D

Improvements for ESD, RFI,

and Fast Transients, Correct

Respiration Diff-Amp Topology

LPP

6/24/995-39821 LPP

5-39936

F

E LPP LPP

Mods to U2 clock line, Resp

gain amp, ECG supply and

NVRAM pullup7/9/99

LPP

U608

MuxA

+5V

MuxB

A/D Mux

Integrator

Input

Temperature

Thermistor

0.1%

(U604-10)

U601

Temperature

Amplifier

-5V

U602

Analog In

833uSec

U602

52uSec

Isolation

Barrier

U603

PWM

A/DConverter

U609

PWM-timer

U608

Comparator

Inputs

U606

U603

PWM-Out

U601

Serial/Parallel

Control Data

U609

U605

(U604-8)

Buffer for ETCO2, Nurse call relay

Modify RLD to reduce V-Lead noise

Improve ESU rejection

G

SpO2 bypass cap, RS232 PS mods

4KV nurse call relay,

Improve CMR for Resp Toplogy

LPP5-44461 3/26/02

7/18/02

JK

JKLPP5-44857

MuxA

U608-1

Mux-A/D-C

U608-2

U601-1

U60

4-3

U604-10

U604-2

U60

3out

U611-6

Patient-Temp

Mux-A/D-A

U604-6

U612-6

U60

2-7

U60

4-5

U601-7

U613-6

iso603-a

U605-12

MuxB

iso601-a

iso602-a

U604-4

Mux-A/D-B

SW-RL-V

Resp-LdsOff

Q60

1-e

U60

4-8

U610-6

Sw-RespReset

Temp-In

U60

2-2

U608-3

iso604-a

MonBw

U601-2

U60

2-5

U605-out

U602-3

U601-3

D601-2

U60

4-1

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

13 12

12

X013

X114

X215

X312

X41

X55

X62

X74

INH6

A11

B10

C9

X3

1

2

2

3

8

6

5

2

3

8

6

5

2

3

7

5 6

4 1

8

3

1

2

2

3

8

6

5

SER14

SRCLK11

SRCLR10

RCLK12

G13

QA15

QB1

QC2

QD3

QE4

QF5

QG6

QH7

QH9

56

9 8

11 10

2

3

8

6

5

3

2

1

84

3

2

1

84

1

3

2

5

6

7

84

3

2

1

84

1

3

2

34

5

6

7

84

X013

X114

X215

X312

X41

X55

X62

X74

INH6

A11

B10

C9

X3

5

6

7

84

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

U606

74HCT595

U604F

74HCT04

TP621

TP603

TP624

R625

1K

R630

10K

TP639

C638

.047uF

U604A

74HCT04

U609

4051

R604

10K

C637

.047uF

C646

1000pF

C624

.047uF

R603

46.4K

TP642

R601

10K

TP623

R602

73.2K

R631

5.11K

TP607

R605

3.48K

R623

46.4K

TP636

R627 1.21K

R607

464K

C632

.047uF

C645

100pF

J601

CON2

R608

1K

TP631

U611

HCNW4503

U613

HCNW4503

U602

LM311

+

-

Q601

MMBT3904L

TP640U612

HCNW4503

TP637

R611

6.19K

C629

.047uF

R610

511

TP604

TP641

TP633

U605

74HCT595

TP616

R613

6.19K

U604C

74HCT04

C603

680pF

C640

.047uF

R621

215

TP629

C639

.047uF

TP617

C642

0.1uF

U604D

74HCT04

R615

6.19K

C641

0.1uF

TP618

C631

.047uF

TP628

R622

46.4K

TP627

TP643

C609

4.7uF+

U604E

74HCT04

R619

619

U610

HCNW4503

TP632

R620

619

TP635

R624

51.1K

C636

2200pF

C633

.01uF

TP625

C625

.047uF

C601

1000pF

U601A

MC34072

+

-

C626

.047uF

TP638

C627

.047uF

C634 .01uF

TP610

TP630

R632

5.11K

R617

2.15K

TP611

TP601

C647

100pF

TP626

C628

0.1uF

U608A

AD712

+

-

D601

MMBD1503A

R626

1K

C623

.047uF

R629

10K

C621

0.1uF

TP615

C635 .01uF

TP609

C614

4.7uF

+

C644

220pF

U607B

LM393

+

-

C622

.047uF

U607A

LM393

+

-

C630

4.7uF

+

TP612

D602

BAV99L

U604B

74HCT04

TP613

U601B

MC34072

+

-

TP605

C643

220pF

TP614

TP606

U603

4051

TP620

R606

3.48K

U608B

AD712

+

-

R628

10K

fVcc

E

fVcc

fVcc

E

fVee

ED

fVee

E

ED

E

f+5V

E

ED

E

E

iso+5Vdig

ED

fVee

E

fVcc

ED

iso+5Vdig

f+5V

fVee

E

E

f+5V

ED

fVee

E

fVee

ED

fVcc

E

iso+5Vdig

E

f+5V

fVcc

fVcc

fVee

ED

ED

E

fVcc

f+5VfVcc

E

fVcc

E

E

E

ED

E

iso+5Vdig

E fVcc

f+5V

f+5V

fVee

ED

ED

fVee

E

ED

EE

E

E

E

ED

iso+5Vdig

FE-ADC-Clock

Mux-LdS-C

Mux-LdS-B

+5V

SW-RLD-V

fVcc

Mux-LdS-A

SW-RLD-RL

An-Resp

LA

f+1.24V

iso+5Vdig

vRL

RA

Resp-DC

FE-Data-Clock

-Clamp

Sw-MonBw

f+1.24V

iso+5Vdig

An-ECG

+5V

SW-RLD-RA

SW-RLD-LL

+5V

f+1.24V

FE-Data-In

FE-PWM-ADC

V+

SW-RLD-LA

f+5V

SpO2-Reset

fVee

Resp-Reset Resp-Off

LL

+5V

+Clamp

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620017 G

ECG A/D and Interface

C

6 8Monday, November 04, 2002

Page 182: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 172

Figure D-26. 210/220 Respiration circuit.

Respiration

DriveCircuit

B.W. = .06Hz to 16 Hz Gain =1000

B.W. =10Hz

Isolation

Barrier

U702 U703

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

5-39121 JAC 3/15/99 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet LPP LPP5-39455 4/27/99

D

Improvements for ESD, RFI,

and Fast Transients, Correct

Respiration Diff-Amp Topology

LPP5-39821 6/24/99 LPP

5-39936

F

E LPP LPP

Mods to U2 clock line, Resp

gain amp, ECG supply and

NVRAM pullup7/9/99

Buffer for ETCO2, Nurse call relay

Modify RLD to reduce V-Lead noise

Improve ESU rejection

Respiration

Diff Amp

SpO2 bypass cap, RS232 PSmods

4KV nurse call relay,ImproveCMRR for Resp Topology

G

5-44461 LPP 3/26/02

5-44857 LPP 7/18/02

JK

JK

Q70

1-g

U703-6

RespDr+

RespDr-

Q701-d

d705-c

resp-clk

C701-2

c707.1

c706.1

C702-2 D702-3

D701-3

U702-5

iso701-a

u710-6

U703-5Resp-AC

U702-2

U702-7

U702-1

u703-1

D70

5-2

U702-6

c722-1

D705-1

U70

4-3

U702-3

U70

4-6

U70

4-2

3

2

1

84

1

3

2

5

6

78

4

5

6

7

84

5

6

7

84

D12

CLK11

Q9

Q8

PR10

CL

13

1

3

2

3

2

1

84

2

3

8

6

5

D2

CLK3

Q5

Q6

PR4

CL

1

1

3

2

1

3

2

1

3

2

1

3

2

2

3

1

3

2

1

84

REV Description ECN/ECO Init Date Ckd

A Release to Production

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

C707

330pF

C717

.047uF

TP711

TP712

C715

.047uF

U702A

TL072

+

-

R729

3.16K

R720

100K

C716

.047uF

C713

0.1uF

C718

.047uF

R716

3.16K

R727

3.16K

C724

22pF

TP708 D705

MMBD354LT1

U704B

AD712

+

-

U702B

TL072

+

-

TP707

TP705

TP717

TP713

R728

3.16KTP721

U703B

AD712

+

-

TP702

U701B

74HC74

R705

2.15K

C719

4.7uF+

R711

178K

C714

.047uF

TP703

D706

MMBD1503A

U703A

AD712

+

-

U710

HCNW4503

C712

3.3uF

R713

178K

TP704

TP725

R718

825K

R717

3.16K

R710

464K

TP710

TP726

R719

51.1K

TP727

R721

316K

R722

316

R712

19.6K

U701A

74HC74

D701

MMBD1503A

R707

1.96K

D702

MMBD1503A

C701

1000pF

D703

MMBD1503A

D704

MMBD1503A

TP724

C705

0.1uF

TP720

Q701

MMBF4393L

TP723R701

31.6K

TP709

TP728

C711

0.1uF

R702

31.6K

C702

1000pF

C723

22pF R706

215

R709

464K

C706

330pF

R708

1.96K

R726

3.16K

C7220

TP706

R703

1.96K

TP718

R704

1.96K

R715

3.16K

U704A

AD712

+

-

TP714

R725

2.15K

TP722

TP719

C721

100pF

C720

.047uF

R723

1Meg

R724

196K

TP701

TP715

E E

E

E

E E

E

E

E

E

EE

E E E

E

E

ED

E

E

E

E

ED

E

fVcc

E

E

fVee

fVcc

fVcc

fVee

fVcc

fVcc

fVee

fVee

fVee

fVcc

fVee

Resp-Reset

An-Resp

-Clamp +Clamp

Right-Arm

Left-Arm

f+5V

Resp-DC

fVcc

fVee

f+5V

FE-Pwr-Sync

iso+5Vdig

iso+5Vdig

Resp-Off

+5V

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620017 G

Respiration

C

7 8Monday, August 05, 2002

Page 183: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 173

Figure D-27. 210/220 serial communication.

Serial I/O

connector

Isolation

Barrier

Isolated Supply

SerialCommunication

620017.dsnRick Myers

Rick Myers

Mar 5, 1999

Mar 5, 1999

3/15/99JAC5-39121 LPP

L. Phillips

Z. Psenicnik

J. Bello

3/16/99

3/16/99

3/16/99

B See ECN worksheet 5-39455 4/27/99LPP LPP

Improvements for ESD, RFI,

and Fast Transients, Correct

Respiration Diff-Amp Topology

D 6/24/995-39821 LPP

5-39936

F

E LPP LPP

Mods to U2 clock line, Resp

gain amp, ECG supply and

NVRAM pullup7/9/99

Buffer for ETCO2, Nurse call relay

Modify RLD to reduce V-Lead noise

Improve ESU rejection

G

SpO2 bypass cap, RS232 PS mods

4KV nurse call relay,

Improve CMR for Resp Toplogy

3/26/025-44461 LPP

LPP

JK

JK5-44857 LPP 7/18/02

iso802-a

U805-2

U805-1

ISO801-4

R815-1

U802-15

T801-1

T801-4

U802-3

Rx

U802-2

q801-e

iso803-a

rly-COM

rly-NO

Txiso803-c

T801-2

R812

-1

R803

-2

q802-b

rly-NC

U805-6

q802-e

U801-5

T801-5

U801-1

U80

1-ct

COMP5

TCAP3

IPK7

IDC8

ISWC1

ISWE2

Vcc6

GN

D4

1

3

2

2

3

8

6

5

3

1

2

2

3

8

6

5

1

3

2

16

2

5

4

1

3

2

3

1

2

61

8

732

1RA2

2RA4

3RA6

1DY3

2DY5

3DY7

1RY15

2RY13

3RY11

1DA14

2DA12

3DA10

Vd

d1

Vcc

16

Vss

8

GN

D9

1

2

3

4

5

6

7

8

Coil+1

Coil-5

CO

M1

2

N.O

.3

N.C

.4

5

8

1

2

3

4

Title

Size Document Number Rev

Date: Sheet of

Welch Allyn Inc.

Schematic:

Release For Production

Approved

Checked

Designed

Drawn

Initial Date

REV Description ECN/ECO Init Date Ckd

A Release to Production

C808

.047uF

TP806

U801

MC34063AD

D803

BAV99L

TP808

R804

511

C809

.047uF

U803

HCNW4503

Q801

MMBT3904L

C802

220pf

U804

HCNW4503

C806

.01uF

C814

680pF

TP810

TP807

R813

100

R811

6.19K

R807

6.19K

D801

BAV99L

U805

4N25

D802

BAV99L

R805

3.16K

TP809

R806

3.16K

C803

100uF+R812

215

R801

1

C813

470pf

R819 215

Q802

MMBT3904L

R802

5.11K

R810

619

C805

100uF

+

C804

100uF+

U806

TL431/SO

TP802

R817 215

U802

TL145406

C816

.047uF

R821

1Meg

C801

1uF+

J801

RJ-45

TP804

C812

680pF

R803

10K

C815

.047uF

C810

.047uF

TP805

TP801

K801

relay-JQ1-5V

R808

619

T801

IsoXfmr

TP803

R816

215

C807

470pf

R

R

R

R

R

R

R

R

R

RR

R

R

RR

R

R

R

+5V

RVcc

+5V

RVee

RS423Rx

+5V

R+5V

R+5V

RVee

R+5V RVcc

R+5V

NurseCall

RS423Tx

+Vpump

R+5V

+5V

A

A

B

B

C

C

D

D

E

E

4 4

3 3

2 2

1 1

620017 G

Serial Communication

C

8 8Monday, August 05, 2002

Page 184: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 174

Figure D-28. 200/210/220 transformer isolation.

CIRCUIT SCHEMATIC

PCB

HOLE PATTERN

FEEDBACK

+ 5 V (REGULATED) @ 100 mA

7.5V ± .5V 40MA

7.5V ± .5V 40MA

4

3

2

1

+12V

8

5

+5V

PWM

B

4 3 2 1

B

C

D

A

D

C

B

A

1234

C

REL TO PROD

APPROVED

DESCRIPTIONPART NO.

THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.

AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE

OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.

TRANSLATED FROM:

CAD SOFTWARE:

SCALE

REVDRAWING NO.

TITLE

FINISH:

MATERIAL:

DATE

DATE

DATEDRAWN

CKDDATEINITECN/ECODESCRIPTIONREV

TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONSARE ININCHES

R

.150

.200.200

.600

.514

.815 MAX

.750 MAXMAX.710

A RELEASE TO PROD. ENG. 5-39342 JRS 4/08/99 T.W.

BNOTE 5 WAS

"INDUCTANCE : 380 uH p 10%"5-43326 RLB 10-12-01 T.W.

- -

WJM 01-Apr-99

ZIP 4/08/99 -

J. BELLO 4/08/99 -

- - TRANSFORMERISOLATIONPROE

ME10

620020 BFULL SHEET 1 of 1

NOTES:

1. MANUFACTURER: ZMAN MAGNETICBEAVERTON OREGON

2. TRANSFORMER MUST MEET UL CONSTRUCTION TECHNIQUES.

3. LABELING: THE TRANSFORMER SHALL BE LABELED, ANDINCLUDE THE FOLLOWING:

- MANUFACTURER'S NAME- WELLCH ALLYN PART NUMBER I.E. 620020- DATE CODE: YYWW (OR APPROVED ACCEPTABLE FORM)

4. SCHEMATIC AS NOTED.

5. SPECIFICATIONS:

ISOLATION CAPACITANCE: < 7.5 pFVOLTAGE BREAKDOWN : > 8 KV DCINPUT : +12 V DCOUTPUT 1 : +7.5 V þ 0.5 V @ 40 mAOUTPUT 2 : +5 V @ 100 mA (REGULATED)OUTPUT 3 : -7.5 V þ 0.5 V @ 40 mA

SWITCHING FREQUENCY : 76.8 kHZOPERATING MODE : DISCONTINUOUS

PRIMARY WINDING : PIN 5 TO PIN 8INDUCTANCE : 135 uH þ 10%RESISTANCE : 0.15 OHMS þ 15%

SECONDARY WINDING : PIN 1 TO PIN 4INDUCTANCE : 380 uH +10%/-15%RESISTANCE : 0.25 OHMS þ 15%

6. THE FOLLOWING TESTS TO BE PERFORMED ON 100% OF THE PARTS ANDWRITTEN CERTIFICATION TO BE SUPPLIED WITH EACH LOT:

A. PRIMARY INDUCTANCE (PIN 5 TO PIN 8).B. SECONDARY INDUCTANCE (PIN 1 TO PIN 4).C. TURNS RATIOl 1-4 TO 5-8.D. VOLTAGE BREAKDOWN.

7. PART TO BE A RECOGNIZED COMPONENT UNDER UL2601 OR EN60601.1 CONSTRUCTION.

Page 185: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 175

Figure D-29. 200/210/220 ECG patient cable.

4

PAC

KAG

ING

3

A

A

PATIENT END

CONNECTOR END

620027-2

620027-1

PATIENT END

B

B

CABLE WIRING DIAGRAMVIEW B-B

NA

NA6

LA

LL

RA

JUMPER

WHITE

BLACK

RED

RA

LA

LL

RED (LL, 3)

4

5

2

3

1

PART#:1340PS

LOT#:X

XX

XX

X

RED (5) BLACK (LA, 2)

WHITE (RA, 1)

LLRA

LA

VIEW A-A CABLE WIRING DIAGRAM

6 SHIELD 1 WHT (RA)

2 BLK (LA)

3 RED (LL)4 BRN (C)

5 GRN (RL)

1

5

4

3

2

6

LL RED

LA BLK

C BRN

RL GRN

RA WHT

SHIELD

RA (WHT)RL (GRN)C (BRN)LL (RED)LA (BLK)

PATIENT END

RARL

CLL

LA

KEN

DA

LLP/N

:1540PSLO

T#XX

XX

XX

CONNECTOR END PATIENT END

3

3

C

C

PATIENT END

CONNECTOR END

620027-4

620027-3

PATIENT END

D

D

CABLE WIRING DIAGRAMVIEW D-D

NA

NA6

L

F

R

JUMPER

RED

YELLOW

GREEN

R

L

F

YELLOW (L, 3)

4

5

2

3

1

PART#:1340PS-I

LOT#:X

XX

XX

X

RED (5) GREEN (F, 2)

RED (R, 1)

FR

L

VIEW C-C CABLE WIRING DIAGRAM

6 SHIELD 1 RED (R)

2 YEL (L)

3 GRN (L)4 WHT (C)

5 BLK (N)

1

5

4

3

2

6

F GRN

L YEL

C WHT

N BLK

R RED

SHIELD

R (RED)N (BLK)C (WHT)F (GRN)L (YEL)

PATIENT END

RN

CF

L

KEN

DA

LLP/N

:1540PS-ILOT#X

XX

XX

X

CONNECTOR END PATIENT END

3

4 3 2 1

B

C

D

A

D

C

B

A

1234

C

REL TO PROD

APPROVED

DESCRIPTIONPART NO.

THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.

AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE

OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.

TRANSLATED FROM:

CAD SOFTWARE:

SCALE

REVDRAWING NO.

TITLE

FINISH:

MATERIAL:

DATE

DATE

DATEDRAWN

CKDDATEINITECN/ECODESCRIPTIONREV

TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONSARE ININCHES

R

120.00 ± 3.00120.00 ± 3.00

120.00 ± 3.00120.00 ± 3.00

CATALOGP/N

REFP/N

DESCRIPTION

620027-1 1340PS MW02500 3-LEAD; DIN STYLE SAFETY PATIENT CABLE;COLOR CODE:W,R,BL

620027-2 1540PS MW03775 5-LEAD; DIN STYLE SAFETY PATIENT CABLE;COLOR CODE:W,G,BR,R,BL

620027-3 1340PS-I 3-LEAD, DIN STYLE SAFETY PATIENT CABLEIEC COLOR CODE: R,G,Y

620027-4 1540PS-I 5-LEAD, DIN STYLE SAFETY PATIENT CABLEIEC COLOR CODE: R,B,W,G,Y

A RELEASE TO PROD. ENG. 5-39391 JRS 4/16/99 T.W.

BADD 620027-3,-4 (IEC)

CHANGE NOTES 3,45-39935 ASK 7-8-99 S.S.

- -

JB ENGEL 09-Apr-99

ZIP 4/16/99 -

J. BELLO 4/16/99 -

- - ECG PATIENTCABLEPRO E

620027 BNONE SHEET 1 of 1

NOTES:

1. CONNECTOR AND TRUNK CABLE SHALL BE 414C GRAYAND THE PATIENT END SHALL BE BLACK.

2. ELECTRICAL RESISTANCE SHALL BE BETWEEN 900 AND 1100 OHMS.

3. CABLE NAMEPLATE SHALL CONTAIN:KENDALLPART NUMBER: SEE TABLE - CATALOG P/NLOT NUMBER: XXXXXX

4. PACKAGING BAG LABEL SHALL CONTAIN:KENDALLCATALOG NUMBER: SEE TABLEPART NUMBER: SEE TABLE - REF P/NDESCRIPTION: SEE TABLEQUANTITY: 1 EACHLOT NUMBER: XXXXXX

5. CHANNEL DESIGNATIONS: RA=WHITE, LL=RED, LA=BLACK;WITH 1 K OHM RESISTORS;WIRING PER ANSI/AAMI 1983 ECG CONNECTOR STANDARD;(COMPLIANT WITH ANSI/AAMI EC53-1995 CABLE AND LEAD STANDARD)

6. CHANNEL DESIGNATIONS: RA=WHITE, RL= GREEN, C=BROWN;LL=RED, LA=BLACK; WITH 1 K OHM RESISTORS;WIRING PER ANSI/AAMI 1983 ECG CONNECTOR STANDARD;(COMPLIANT WITH ANSI/AAMI EC53-1995 CABLE AND LEAD STANDARD)

5

6

8

9

7. CABLE MUST MEET THE PERFORMANCE STANDARD FOR ELECTRODE LEAD WIRESAND PATIENT CABLES FOUND IN TITLE 21 CFR, PART 898

8. CHANNEL DESIGNATIONS: R=RED, F=GREEN, L=YELLOW;WITH 1 K OHM RESISTORS;WIRING PER ANSI/AAMI 1983 ECG CONNECTOR STANDARD;(COMPLIANT WITH ANSI/AAMI EC53-1995 CABLE AND LEAD STANDARD)

9. CHANNEL DESIGNATIONS: R=RED, N=BLACK, C=WHITE;F=GREEN, L=YELLOW; WITH 1 K OHM RESISTORS;WIRING PER ANSI/AAMI 1983 ECG CONNECTOR STANDARD;(COMPLIANT WITH ANSI/AAMI EC53-1995 CABLE AND LEAD STANDARD)

BB

B

B

B

B

Page 186: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 176

Figure D-30. 200/210/220 power supply sub assy.

GROUND WIRE

NOTE FEED DIRECTION

5-6 IN-LB TORQUE

TYPICAL

EXPLODED VIEW

PARTIAL ASSEMBLY2

3

4

5

6

7

620201X1.MI

B

4 3 2 1

B

C

D

A

D

C

B

A

1234

C

REL TO PROD

APPROVED

DESCRIPTIONPART NO.

THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.

AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE

OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.

TRANSLATED FROM:

CAD SOFTWARE:

SCALE

REVDRAWING NO.

TITLE

FINISH:

MATERIAL:

DATE

DATE

DATEDRAWN

CKDDATEINITECN/ECODESCRIPTIONREV

TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONSARE ININCHES

R

A RELEASE TO PROD. ENG. 5-39387 JRS 4/15/99 T.W.

BREM'D FAN,TOP HSG & VIEWS W/FAN;DELETED WIRE TWIST NOTES

5-44568 CRW 5/8/02 JPK

620201-501 SUB-ASSEMBLY WITHOUT FAN

620201-502 SUB-ASSEMBLY

JB ENGEL 13-Apr-99

ZIP 4/15/99 -

J. BELLO 4/15/99 -

- - POWER SUPPLY\SUB-ASSEMBLYPRO E

ME-10

620201 BNONE SHEET 1 of 1

Page 187: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 177

Figure D-31. 220 ETCO2 PCB assembly.

4

23

NOTES:

1 PRYON LC-101 GENERIC SUBASSEMBLY P/N 000.10100

2 NOMINAL LENGTH (FROM PUMP BODY T} O TUBING EXHAUST)13.4 INCHES.

3 NOMINAL LENGTH (FROM SENSOR BODY TO FEMALE LUER INLET)9.8 INCHES.

4 WATERTRAP AND WATERTRAP RECEPTAC} LE REQUIRED FOR OPERATION.

5. PACKAGING TO BE APPROVED BY WELC H ALLYN. HANDLING AND PACKAGING TOPREVENT DAMAGE DUE TO ESD, BENDI}} NG AND OTHER DAMAGE.

PUMP EXHAUST(1/16 I.D.)

SENSOR INLET

(FROM WATER TRAP RECPTACLE)

1

POWER AND COMMUNICATION

MOLEX 22-11-2042

WATER TRAP SENSE

MOLEX 22-29-2021

6. ASSY TO BE MARKED WITH MANUFACTURER'S SERIAL NUMBER.

DRAWN DATE

DATE

DATE

MATERIAL:

FINISH:

TITLE

DRAWING NO. REV

SCALE

CAD SOFTWARE:

TRANSLATED FROM:

B

THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.

AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE

OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.

PART NO. DESCRIPTION

APPROVED

REL TO PROD

REV DESCRIPTION ECN/ECO INIT DATE CKD

TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONSARE ININCHES

R

.832

3.150

3.900

THIS DWG -1 PRYON SERIAL #400 AND HIGHER

A RELEASE TO PROD. ENG. 5-39363 JRS 4/14/99 T.W.

B CHANGE PRYON P/N TO 000.10100 5-39549 JRS 5/5/99 T.W.

C ADDED NOTE 6, 620032 -1 5-40470 TJW 11/2/99 ASK

WJM 01-Apr-99

ZIP 4/14/99 -

J. BELLO 4/14/99 -

- - ETCO2 PCBASSEMBLYPROE

ME10

620032 CNONE SHEET 1 of 1

Serial#XXXXX PRYONC-CAP

B

Page 188: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 178

Figure D-32. 200/210/220 Power supply.

NOTES:

1. SUPPLIER: CONDOR POWER SUPPLIES INC.2311 STATHAM PKWY.OXNARD, CA. 93033PART NO: GLM50-12

2. SUPPLY MUST BE APPROVED TOUL 2601 AND IEC 601-1

3. SUPPLIER REV. C OR HIGHER

C

DRAWN DATE

DATE

DATE

MATERIAL:

FINISH:

TITLE

DRAWING NO. REV

SCALE

CAD SOFTWARE:

TRANSLATED FROM:

B

THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.

AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE

OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.

PART NO. DESCRIPTION

APPROVED

REL TO PROD

REV DESCRIPTION ECN/ECO INIT DATE CKD

TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONSARE ININCHES

R

620150-1 REV B OR HIGHER

BSEE ECN

(REV A REL. AS EXT ITM MSTR)5-39954 ASK 7-12-99 T.W.

C REVISED SUPPLIER P.N. 5-41401 JRS 5/18/00 T.W.

ASK 12-Jul-99

ZIP 7-12-99 -

J. BELLO 7-12-99 -

- - POWER SUPPLY, 50WPRO/E

620150 CSHEET 1 of 1

PERFORMANCE SPECIFICATIONS

INPUT VOLTAGE 90 - 264 Vac

INPUT FREQUENCY 47 - 63 Hz

INPUT CURRENT (FULL LOAD) 1.6 A

OVERVOLTAGE PROTECTION 14 ±1.1 V

OUTPUT VOLTAGE 12 VDC @4.2 A

OUTPUT POWER-CONTINUOUS 50 W

OUTPUT POWER - PEAK 55 W

OPERATING TEMPERATURE 0°-50° C

EMI COMPLIANCECISPRII CLASS B(EN55011)

OUTPUT NOISE P-P 1%

J2 OUTPUT

1) OUTPUT 1 (+)

2) OUTPUT 1 (+)

3) OUTPUT 1 (+)

4) RETURN

5) RETURN

6) RETURN

J1 AC INPUT

1) LINE

2)

3) NEUTRAL

Page 189: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 179

Page 190: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 180

Figure D-33. Nonin SpO2 Board with Shield.

Page 191: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 181

Figure D-34. Motor Stepper.

Page 192: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 182

Figure D-35. Pump Pneumatic.

1 10 WIRE, 22GA, GREEN

1 9 WIRE, 22GA, BROWN

1 8 WIRE, 22GA, BLUE

1 7 WIRE, 22GA, RED

1 6 WIRE, 22GA, BLACK

1 5 WIRE, 22GA, WHITE

6 4 CONTACTS, MOLEX 08-5 0-0113

1 3 6 PIN CONNECTOR, MOL EX 22-01-3067

6 2 ECG PINS (FEMALE), A MP-66105-3

1 1 ECG CONNECTOR WA PAR T # 620102

QTY ITEM DESCRIPTION

1

2

34

5

61

2

3

4

5

6

1

2

3

4

5

6

ITEM 1 ITEM 3

A

A

SECTION A-A

NOTES:

1. ALL CONNECTORS ARE TO BE UL RECOG NIZED COMPONENTS AND CSA CERTIFIED.CONNECTOR MATERIAL SHALL HAVE FLA MMABILITY RATINGS OF 94V-2 OR BETTER .

2. WIRE SPECIFIATIONS

-TYPE U.L. 1061, CSA AWM I A/B FT1

-COLOR CODED .009 THK. (NOM) PVC INS ULATION

-TEMP RANGE: -10 ° C TO +80 ° C

-VOLTAGE RATING: 300V

-STRANDED TINNED COPPER CONDUCTOR

-RECOGNIZED COMPONENT MARK RU AND CS A MUSTAPPEAR ON SPOOL OR BE STAMPED ON WI RE

1

2

5

6

7 3

410

9

8

11

PIN 1

DRAWN DATE

DATE

DATE

MATERIAL:

FINISH:

TITLE

DRAWING NO. REV

SCALE

CAD SOFTWARE:

TRANSLATED FROM:

B

THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.

AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE

OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.

PART NO. DESCRIPTION

APPROVED

REL TO PROD

REV DESCRIPTION ECN/ECO INIT DATE CKD

TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONSARE ININCHES

R

±.251.75

.38

±.253.50

A RELEASE TO PRODUCTION (X2) 5-39025 JRS 2/18/99 T.W.

JB ENGEL 13-Jan-99

ZIP 2/19/99 -

J. BELLO 2/19/99 -

- - CABLE ASSYECGPE

ME10

620165 ANONE SHEET 1 of 1

1 11 SHRINK TUBE

Page 193: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 183

Figure D-36. 200/210/220 ECG cable assembly.

1 6 WIRE, 22GA, YELLOW

1 5 WIRE, 22GA, ORANGE

1 4 WIRE, 22GA, RED

1 3 WIRE, 22GA, BROWN

8 2 CONTACTS, MOLEX 08-5 0-0113

2 1 4 PIN CONNECTOR, MOL EX 22-01-3047

QTY ITEM DESCRIPTION

1

2

3

4

1

2

3

4

81

6

5

4

3

7 1

2

PIN 1

PIN 1

2

NOTES:

1. ALL CONNECTORS ARE TO BE UL RECOG NIZED COMPONENTS AND CSA CERTIFIED.CONNECTOR MATERIAL SHALL HAVE FLA MMABILITY RATINGS OF 94V-2 OR BETTER .

2. WIRE SPECIFICATIONS

-TYPE U.L. 1061, CSA AWM I A/B FT1

-COLOR CODED .009 THK. (NOM) PVC INS ULATION

-TEMP RANGE: -10 ° C TO +80 ° C

-VOLTAGE RATING: 300V

-STRANDED TINNED COPPER CONDUCTOR

-RECOGNIZED COMPONENT MARK RU AND CS A MUSTAPPEAR ON SPOOL OR BE STAMPED ON WI RE

ZIP

J. BELLO

DRAWN DATE

DATE

DATE

MATERIAL:

FINISH:

TITLE

DRAWING NO. REV

SCALE

CAD SOFTWARE:

TRANSLATED FROM:

B

THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.

AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE

OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.

PART NO. DESCRIPTION

APPROVED

REL TO PROD

REV DESCRIPTION ECN/ECO INIT DATE CKD

TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONSARE ININCHES

R

±.124.75

±.123.75

±.12.75 ±.12.378

A RELEASE TO PRODUCTION (X2) 5-39025 JRS 2/18/99 T.W.

B CHANGE WIRE SPEC IN NOTE 2 5-39543 JRS 5/5/99 T.W.

CADD .75" IN LENGTHADD FERRITECHANGED PART # 620166-1

5-39879 JRS 6/24/99 T.W.

JB ENGEL 13-Jan-99

2/19/99 -

2/19/99 -

- - CABLE ASSYCO2PE

ME10

620166 CNONE SHEET 1 of 1

620166

620166-1 THIS DRAWING REV C AND ABOVE

1 7 SHRINK TUBE

B

SINGLE LOOP, ALL WIRESTHROUGH FERRITE

1 8 FAIR RITE P/N 2643801902

C

C C

Page 194: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 184

Figure D.37. CO2 cable assembly.

SCHEMATIC10 PIN

DB9

WHITE

CABLE DRAIN/SHIELD (YELLOW)

GREEN

BLACK

RED

MIDDLE COAX

ORANGE JUMPER FROM COAX SHIELD

8

3

2

10

9

7

6

5

4

1

8

4

7

2

3

1

6

9

5

6

1 6 FAIR-RITE 2643625102

45

SECTION A-AA

A

4

23

1

PIN 1

4 5 HEAT SHRINK

1 4 COAX CABLE, BELDON#821 6

1 3 SHIELDED CABLE, CAROL# CO742 W/ DRAIN

1 2 3M CONNECTOR, 89110-0101

1 1 SPO2 CONNECTOR, AMP #7 45491-2

QTY ITEM DESCRIPTION

PIN 1

SEE DETAIL B

BRAID SHIELD CONNECTED TO 26 AWG ORANGEJUMPER WIRE VIA SOLDER BRIDGE, COVER WITHLOW TEMPERATURE SHRINK TUBING BOTHE ENDS

DRAINWIRE YELLOWSHRINKWRAPPED (BOTH ENDS)

2. CABLE ASSEMBLY TO BE 100% TESTED FOR POINT TO POINTAND SHIELD OVER SHIELD CONTINUITY.

NOTES:

1. ALL CONNECTORS ARE TO BE UL RECOG NIZED COMPONENTS AND CSA CERTIFIED.

CONNECTOR MATERIAL SHALL HAVE FLA MMABILITY RATINGS OF 94V-2 OR BETTER .

CONNECTOR REF.

SHIELD OVER SHIELD(OVERLAP SEAM)

CABLE SHIELD

HEAT SHRINK REF.

CABLE REF.

DETAIL B4 PLCS

DRAWN DATE

DATE

DATE

MATERIAL:

FINISH:

TITLE

DRAWING NO. REV

SCALE

CAD SOFTWARE:

TRANSLATED FROM:

B

THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.

AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE

OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.

PART NO. DESCRIPTION

APPROVED

REL TO PROD

REV DESCRIPTION ECN/ECO INIT DATE CKD

TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONSARE ININCHES

R

MAX FOR SHIELDED CABLE.130 MAX. FOR COAX.

.250

.250 STRIP

±.254.00

/.06.00

620169 THIS PART

620169-1 THIS PART REV B AND ABOVE

620169-2 THIS PART REV C AND ABOVE

A RELEASE TO PRODUCTION (X2) 5-39025 JRS 2/18/99 T.W.

B ADD FERRITE, ITEM 6CHANGED PART NO. TO 620169-1 5-39627 JRS 5/14/99 T.W.

C CHANGE CONN. TO METAL SHELLCHANGED PART NO. TO 620169-2 5-39885 JRS 6/29/99 T.W.

JB ENGEL 14-May-99

ZIP 2/18/99 -

J. BELLO 2/18/99 -

- - CABLE ASSYNELLCOR SENSORPE

ME10

620169 CNONE SHEET 1 of 1

B

B

BOTH CABLES THROUGHFERRITE - LOCATE AT MID POINT

B

C

C

Page 195: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 185

Figure D-38. Nellcor sensor cable assy.

5

2

NOTES:

1. ENDS OF TUBING TO BE FLUSH TO BAR B FLANGES

SOLDER WIRE FROM ITEM 4 TO PUMP TERMINALS USING SOLDER ITEM 13.

ATTACH FAST-ONS FROM ITEM 4.

MANIFOLD ORIENTATION - HOLES FACI NG UP AS NOTED

PUMP INTAKE ORIENTATION - TUBE ON TOP SIDE AS NOTED.

4

3

FLOW DIRECTION

RED

BLACK

ORANGEWHITE

4

1

9

3

8

2

4

8 5 10

7 10

116 6

13

1

3

2

12

5

4+

-

2

REF

REF

REF

2

DRAWN DATE

DATE

DATE

MATERIAL:

FINISH:

TITLE

DRAWING NO. REV

SCALE

CAD SOFTWARE:

TRANSLATED FROM:

B

THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.

AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE

OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.

PART NO. DESCRIPTION

APPROVED

REL TO PROD

REV DESCRIPTION ECN/ECO INIT DATE CKD

TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONSARE ININCHES

R

620187-501 PNEUMATIC SUB-ASSEMBLY

A RELEASE TO PROD. ENG. 5-39387 JRS 4/15/99 T.W.

B REVISED ITEM NUMBERS 5-39513 TJW 5/3/99 T.W.

JB ENGEL 13-Apr-99

ZIP 4/15/99 -

J. BELLO 4/15/99 -

- - PNEUMATIC SUB-ASSYPRO EME-10

620187 BNONE SHEET 1 of 1

Page 196: Atlas Patient Monitor - Henry Schein

Welch Allyn Atlas Monitor Service Manual 6200-43E Rev E 186

Figure D-39. 200/210/220 Pneumatic sub assy.

Figure D-40. 220 CO2 cable assy.

1 6 WIRE, 22GA, YELLOW

1 5 WIRE, 22GA, ORANGE

1 4 WIRE, 22GA, RED

1 3 WIRE, 22GA, BROWN

8 2 CONTACTS, MOLEX 08-5 0-0113

2 1 4 PIN CONNECTOR, MOL EX 22-01-3047

QTY ITEM DESCRIPTION

THROUGH FERRITESINGLE LOOP, ALL WIRES

2

PIN 1

PIN 1

2

17

3

4

5

61

8

4

3

2

1

4

3

2

1

910

NOTE CATHODE

ORIENTATION

NOTES:

1. ALL CONNECTORS ARE TO BE UL RECOG NIZED COMPONENTS AND CSA CERTIFIED.

CONNECTOR MATERIAL SHALL HAVE FLA MMABILITY RATINGS OF 94V-2 OR BETTER .

2. WIRE SPECIFICATIONS

-TYPE U.L. 1061, CSA AWM I A/B FT1

-COLOR CODED .009 THK. (NOM) PVC INSULATION

-TEMP RANGE: -10 °C TO +80 ° C

-VOLTAGE RATING: 300V

-STRANDED TINNED COPPER CONDUCTOR

-RECOGNIZED COMPONENT MARK RU AND CS A MUST

APPEAR ON SPOOL OR BE STAMPED ON WI RE

CDM

J. BELLO

DRAWN DATE

DATE

DATE

MATERIAL:

FINISH:

TITLE

DRAWING NO. REV

SCALE

CAD SOFTWARE:

TRANSLATED FROM:

B

THESE DRAWINGS AND SPECIFICATIONS AR E THE PROPERTY OF WELCH ALLYN, INC.

AND SHALL NOT BE REPRODUCED, OR COPI ED, OR USED AS A BASIS FOR MANUFACTU RE

OR SALE OF EQUIPMENT OR DEVICES WITH OUT WRITTEN PERMISSION.

PART NO. DESCRIPTION

APPROVED

REL TO PROD

REV DESCRIPTION ECN/ECO INIT DATE CKD

TOLERANCES.XX = ±.02.XXX = ±.005ANGLES ±2 °

UNLESS OTHERWISE SPECIFIED

DIMENSIONSARE ININCHES

R

.378±.12.75±.12

3.75±.12

4.75±.12

A RELEASE TO PRODUCTION 5-39928 JRS 7/2/99 T.W.

B CHANGE DIODE VENDOR 5-44091 RLB 1/22/02

JB ENGEL 13-Jan-99

7/2/99 -

7/2/99 -

- - CABLE ASSYCO2PE

ME10

620524 BNONE SHEET 1 of 1

1 7 SHRINK TUBE

1 8 FAIR RITE P/N 2643801902

1 9 DIODE,VISHAY TELEFUNKEN P/N IN4148

1 10 CLEAR HEAT SHRINK

Page 197: Atlas Patient Monitor - Henry Schein

Calibration Date Table Appendix E

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 187

Calibration Date Number of Days Calibration Date Number of DaysTable E-1. Calibration Date Table.

1/1/2003 18261/2/2003 18271/3/2003 18281/4/2003 18291/5/2003 18301/6/2003 18311/7/2003 18321/8/2003 18331/9/2003 1834

1/10/2003 18351/11/2003 18361/12/2003 18371/13/2003 18381/14/2003 18391/15/2003 18401/16/2003 18411/17/2003 18421/18/2003 18431/19/2003 18441/20/2003 18451/21/2003 18461/22/2003 18471/23/2003 18481/24/2003 18491/25/2003 18501/26/2003 18511/27/2003 18521/28/2003 18531/29/2003 18541/30/2003 18551/31/2003 18562/1/2003 18572/2/2003 18582/3/2003 18592/4/2003 18602/5/2003 18612/6/2003 18622/7/2003 18632/8/2003 18642/9/2003 1865

2/10/2003 18662/11/2003 18672/12/2003 18682/13/2003 18692/14/2003 18702/15/2003 18712/16/2003 18722/17/2003 18732/18/2003 18742/19/2003 18752/20/2003 18762/21/2003 18772/22/2003 18782/23/2003 18792/24/2003 18802/25/2003 18812/26/2003 18822/27/2003 18832/28/2003 18843/1/2003 18853/2/2003 18863/3/2003 18873/4/2003 18883/5/2003 18893/6/2003 18903/7/2003 18913/8/2003 18923/9/2003 1893

3/10/2003 18943/11/2003 18953/12/2003 18963/13/2003 18973/14/2003 18983/15/2003 18993/16/2003 19003/17/2003 19013/18/2003 19023/19/2003 19033/20/2003 19043/21/2003 19053/22/2003 1906

Page 198: Atlas Patient Monitor - Henry Schein

188 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix E Calibration Date Table

Calibration Date Number of Days Calibration Date Number of Days

3/23/2003 19073/24/2003 19083/25/2003 19093/26/2003 19103/27/2003 19113/28/2003 19123/29/2003 19133/30/2003 19143/31/2003 19154/1/2003 19164/2/2003 19174/3/2003 19184/4/2003 19194/5/2003 19204/6/2003 19214/7/2003 19224/8/2003 19234/9/2003 1924

4/10/2003 19254/11/2003 19264/12/2003 19274/13/2003 19284/14/2003 19294/15/2003 19304/16/2003 19314/17/2003 19324/18/2003 19334/19/2003 19344/20/2003 19354/21/2003 19364/22/2003 19374/23/2003 19384/24/2003 19394/25/2003 19404/26/2003 19414/27/2003 19424/28/2003 19434/29/2003 19444/30/2003 19455/1/2003 19465/2/2003 1947

5/3/2003 19485/4/2003 19495/5/2003 19505/6/2003 19515/7/2003 19525/8/2003 19535/9/2003 1954

5/10/2003 19555/11/2003 19565/12/2003 19575/13/2003 19585/14/2003 19595/15/2003 19605/16/2003 19615/17/2003 19625/18/2003 19635/19/2003 19645/20/2003 19655/21/2003 19665/22/2003 19675/23/2003 19685/24/2003 19695/25/2003 19705/26/2003 19715/27/2003 19725/28/2003 19735/29/2003 19745/30/2003 19755/31/2003 19766/1/2003 19776/2/2003 19786/3/2003 19796/4/2003 19806/5/2003 19816/6/2003 19826/7/2003 19836/8/2003 19846/9/2003 1985

6/10/2003 19866/11/2003 19876/12/2003 1988

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Calibration Date Number of Days Calibration Date Number of Days

6/13/2003 19896/14/2003 19906/15/2003 19916/16/2003 19926/17/2003 19936/18/2003 19946/19/2003 19956/20/2003 19966/21/2003 19976/22/2003 19986/23/2003 19996/24/2003 20006/25/2003 20016/26/2003 20026/27/2003 20036/28/2003 20046/29/2003 20056/30/2003 20067/1/2003 20077/2/2003 20087/3/2003 20097/4/2003 20107/5/2003 20117/6/2003 20127/7/2003 20137/8/2003 20147/9/2003 2015

7/10/2003 20167/11/2003 20177/12/2003 20187/13/2003 20197/14/2003 20207/15/2003 20217/16/2003 20227/17/2003 20237/18/2003 20247/19/2003 20257/20/2003 20267/21/2003 20277/22/2003 20287/23/2003 2029

7/24/2003 20307/25/2003 20317/26/2003 20327/27/2003 20337/28/2003 20347/29/2003 20357/30/2003 20367/31/2003 20378/1/2003 20388/2/2003 20398/3/2003 20408/4/2003 20418/5/2003 20428/6/2003 20438/7/2003 20448/8/2003 20458/9/2003 2046

8/10/2003 20478/11/2003 20488/12/2003 20498/13/2003 20508/14/2003 20518/15/2003 20528/16/2003 20538/17/2003 20548/18/2003 20558/19/2003 20568/20/2003 20578/21/2003 20588/22/2003 20598/23/2003 20608/24/2003 20618/25/2003 20628/26/2003 20638/27/2003 20648/28/2003 20658/29/2003 20668/30/2003 20678/31/2003 20689/1/2003 20699/2/2003 2070

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Calibration Date Number of Days Calibration Date Number of Days

9/3/2003 20719/4/2003 20729/5/2003 20739/6/2003 20749/7/2003 20759/8/2003 20769/9/2003 2077

9/10/2003 20789/11/2003 20799/12/2003 20809/13/2003 20819/14/2003 20829/15/2003 20839/16/2003 20849/17/2003 20859/18/2003 20869/19/2003 20879/20/2003 20889/21/2003 20899/22/2003 20909/23/2003 20919/24/2003 20929/25/2003 20939/26/2003 20949/27/2003 20959/28/2003 20969/29/2003 20979/30/2003 209810/1/2003 209910/2/2003 210010/3/2003 210110/4/2003 210210/5/2003 210310/6/2003 210410/7/2003 210510/8/2003 210610/9/2003 2107

10/10/2003 210810/11/2003 210910/12/2003 211010/13/2003 2111

10/14/2003 211210/15/2003 211310/16/2003 211410/17/2003 211510/18/2003 211610/19/2003 211710/20/2003 211810/21/2003 211910/22/2003 212010/23/2003 212110/24/2003 212210/25/2003 212310/26/2003 212410/27/2003 212510/28/2003 212610/29/2003 212710/30/2003 212810/31/2003 2129

11/1/2003 213011/2/2003 213111/3/2003 213211/4/2003 213311/5/2003 213411/6/2003 213511/7/2003 213611/8/2003 213711/9/2003 2138

11/10/2003 213911/11/2003 214011/12/2003 214111/13/2003 214211/14/2003 214311/15/2003 214411/16/2003 214511/17/2003 214611/18/2003 214711/19/2003 214811/20/2003 214911/21/2003 215011/22/2003 215111/23/2003 2152

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Calibration Date Number of Days Calibration Date Number of Days

11/24/2003 215311/25/2003 215411/26/2003 215511/27/2003 215611/28/2003 215711/29/2003 215811/30/2003 215912/1/2003 216012/2/2003 216112/3/2003 216212/4/2003 216312/5/2003 216412/6/2003 216512/7/2003 216612/8/2003 216712/9/2003 2168

12/10/2003 216912/11/2003 217012/12/2003 217112/13/2003 217212/14/2003 217312/15/2003 217412/16/2003 217512/17/2003 217612/18/2003 217712/19/2003 217812/20/2003 217912/21/2003 218012/22/2003 218112/23/2003 218212/24/2003 218312/25/2003 218412/26/2003 218512/27/2003 218612/28/2003 218712/29/2003 218812/30/2003 218912/31/2003 2190

1/1/2004 21911/2/2004 21921/3/2004 2193

1/4/2004 21941/5/2004 21951/6/2004 21961/7/2004 21971/8/2004 21981/9/2004 2199

1/10/2004 22001/11/2004 22011/12/2004 22021/13/2004 22031/14/2004 22041/15/2004 22051/16/2004 22061/17/2004 22071/18/2004 22081/19/2004 22091/20/2004 22101/21/2004 22111/22/2004 22121/23/2004 22131/24/2004 22141/25/2004 22151/26/2004 22161/27/2004 22171/28/2004 22181/29/2004 22191/30/2004 22201/31/2004 22212/1/2004 22222/2/2004 22232/3/2004 22242/4/2004 22252/5/2004 22262/6/2004 22272/7/2004 22282/8/2004 22292/9/2004 2230

2/10/2004 22312/11/2004 22322/12/2004 22332/13/2004 2234

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Calibration Date Number of Days Calibration Date Number of Days

2/14/2004 22352/15/2004 22362/16/2004 22372/17/2004 22382/18/2004 22392/19/2004 22402/20/2004 22412/21/2004 22422/22/2004 22432/23/2004 22442/24/2004 22452/25/2004 22462/26/2004 22472/27/2004 22482/28/2004 22492/29/2004 22503/1/2004 22513/2/2004 22523/3/2004 22533/4/2004 22543/5/2004 22553/6/2004 22563/7/2004 22573/8/2004 22583/9/2004 2259

3/10/2004 22603/11/2004 22613/12/2004 22623/13/2004 22633/14/2004 22643/15/2004 22653/16/2004 22663/17/2004 22673/18/2004 22683/19/2004 22693/20/2004 22703/21/2004 22713/22/2004 22723/23/2004 22733/24/2004 22743/25/2004 2275

3/26/2004 22763/27/2004 22773/28/2004 22783/29/2004 22793/30/2004 22803/31/2004 22814/1/2004 22824/2/2004 22834/3/2004 22844/4/2004 22854/5/2004 22864/6/2004 22874/7/2004 22884/8/2004 22894/9/2004 2290

4/10/2004 22914/11/2004 22924/12/2004 22934/13/2004 22944/14/2004 22954/15/2004 22964/16/2004 22974/17/2004 22984/18/2004 22994/19/2004 23004/20/2004 23014/21/2004 23024/22/2004 23034/23/2004 23044/24/2004 23054/25/2004 23064/26/2004 23074/27/2004 23084/28/2004 23094/29/2004 23104/30/2004 23115/1/2004 23125/2/2004 23135/3/2004 23145/4/2004 23155/5/2004 2316

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Calibration Date Number of Days Calibration Date Number of Days

5/6/2004 23175/7/2004 23185/8/2004 23195/9/2004 2320

5/10/2004 23215/11/2004 23225/12/2004 23235/13/2004 23245/14/2004 23255/15/2004 23265/16/2004 23275/17/2004 23285/18/2004 23295/19/2004 23305/20/2004 23315/21/2004 23325/22/2004 23335/23/2004 23345/24/2004 23355/25/2004 23365/26/2004 23375/27/2004 23385/28/2004 23395/29/2004 23405/30/2004 23415/31/2004 23426/1/2004 23436/2/2004 23446/3/2004 23456/4/2004 23466/5/2004 23476/6/2004 23486/7/2004 23496/8/2004 23506/9/2004 2351

6/10/2004 23526/11/2004 23536/12/2004 23546/13/2004 23556/14/2004 23566/15/2004 2357

6/16/2004 23586/17/2004 23596/18/2004 23606/19/2004 23616/20/2004 23626/21/2004 23636/22/2004 23646/23/2004 23656/24/2004 23666/25/2004 23676/26/2004 23686/27/2004 23696/28/2004 23706/29/2004 23716/30/2004 23727/1/2004 23737/2/2004 23747/3/2004 23757/4/2004 23767/5/2004 23777/6/2004 23787/7/2004 23797/8/2004 23807/9/2004 2381

7/10/2004 23827/11/2004 23837/12/2004 23847/13/2004 23857/14/2004 23867/15/2004 23877/16/2004 23887/17/2004 23897/18/2004 23907/19/2004 23917/20/2004 23927/21/2004 23937/22/2004 23947/23/2004 23957/24/2004 23967/25/2004 23977/26/2004 2398

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Calibration Date Number of Days Calibration Date Number of Days

7/27/2004 23997/28/2004 24007/29/2004 24017/30/2004 24027/31/2004 24038/1/2004 24048/2/2004 24058/3/2004 24068/4/2004 24078/5/2004 24088/6/2004 24098/7/2004 24108/8/2004 24118/9/2004 2412

8/10/2004 24138/11/2004 24148/12/2004 24158/13/2004 24168/14/2004 24178/15/2004 24188/16/2004 24198/17/2004 24208/18/2004 24218/19/2004 24228/20/2004 24238/21/2004 24248/22/2004 24258/23/2004 24268/24/2004 24278/25/2004 24288/26/2004 24298/27/2004 24308/28/2004 24318/29/2004 24328/30/2004 24338/31/2004 24349/1/2004 24359/2/2004 24369/3/2004 24379/4/2004 24389/5/2004 2439

9/6/2004 24409/7/2004 24419/8/2004 24429/9/2004 2443

9/10/2004 24449/11/2004 24459/12/2004 24469/13/2004 24479/14/2004 24489/15/2004 24499/16/2004 24509/17/2004 24519/18/2004 24529/19/2004 24539/20/2004 24549/21/2004 24559/22/2004 24569/23/2004 24579/24/2004 24589/25/2004 24599/26/2004 24609/27/2004 24619/28/2004 24629/29/2004 24639/30/2004 246410/1/2004 246510/2/2004 246610/3/2004 246710/4/2004 246810/5/2004 246910/6/2004 247010/7/2004 247110/8/2004 247210/9/2004 2473

10/10/2004 247410/11/2004 247510/12/2004 247610/13/2004 247710/14/2004 247810/15/2004 247910/16/2004 2480

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Calibration Date Number of Days Calibration Date Number of Days

10/17/2004 248110/18/2004 248210/19/2004 248310/20/2004 248410/21/2004 248510/22/2004 248610/23/2004 248710/24/2004 248810/25/2004 248910/26/2004 249010/27/2004 249110/28/2004 249210/29/2004 249310/30/2004 249410/31/2004 249511/1/2004 249611/2/2004 249711/3/2004 249811/4/2004 249911/5/2004 250011/6/2004 250111/7/2004 250211/8/2004 250311/9/2004 2504

11/10/2004 250511/11/2004 250611/12/2004 250711/13/2004 250811/14/2004 250911/15/2004 251011/16/2004 251111/17/2004 251211/18/2004 251311/19/2004 251411/20/2004 251511/21/2004 251611/22/2004 251711/23/2004 251811/24/2004 251911/25/2004 252011/26/2004 2521

11/27/2004 252211/28/2004 252311/29/2004 252411/30/2004 252512/1/2004 252612/2/2004 252712/3/2004 252812/4/2004 252912/5/2004 253012/6/2004 253112/7/2004 253212/8/2004 253312/9/2004 2534

12/10/2004 253512/11/2004 253612/12/2004 253712/13/2004 253812/14/2004 253912/15/2004 254012/16/2004 254112/17/2004 254212/18/2004 254312/19/2004 254412/20/2004 254512/21/2004 254612/22/2004 254712/23/2004 254812/24/2004 254912/25/2004 255012/26/2004 255112/27/2004 255212/28/2004 255312/29/2004 255412/30/2004 255512/31/2004 2556

1/1/2005 25571/2/2005 25581/3/2005 25591/4/2005 25601/5/2005 25611/6/2005 2562

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Appendix E Calibration Date Table

Calibration Date Number of Days Calibration Date Number of Days

1/7/2005 25631/8/2005 25641/9/2005 2565

1/10/2005 25661/11/2005 25671/12/2005 25681/13/2005 25691/14/2005 25701/15/2005 25711/16/2005 25721/17/2005 25731/18/2005 25741/19/2005 25751/20/2005 25761/21/2005 25771/22/2005 25781/23/2005 25791/24/2005 25801/25/2005 25811/26/2005 25821/27/2005 25831/28/2005 25841/29/2005 25851/30/2005 25861/31/2005 25872/1/2005 25882/2/2005 25892/3/2005 25902/4/2005 25912/5/2005 25922/6/2005 25932/7/2005 25942/8/2005 25952/9/2005 2596

2/10/2005 25972/11/2005 25982/12/2005 25992/13/2005 26002/14/2005 26012/15/2005 26022/16/2005 2603

2/17/2005 26042/18/2005 26052/19/2005 26062/20/2005 26072/21/2005 26082/22/2005 26092/23/2005 26102/24/2005 26112/25/2005 26122/26/2005 26132/27/2005 26142/28/2005 26153/1/2005 26163/2/2005 26173/3/2005 26183/4/2005 26193/5/2005 26203/6/2005 26213/7/2005 26223/8/2005 26233/9/2005 2624

3/10/2005 26253/11/2005 26263/12/2005 26273/13/2005 26283/14/2005 26293/15/2005 26303/16/2005 26313/17/2005 26323/18/2005 26333/19/2005 26343/20/2005 26353/21/2005 26363/22/2005 26373/23/2005 26383/24/2005 26393/25/2005 26403/26/2005 26413/27/2005 26423/28/2005 26433/29/2005 2644

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Calibration Date Number of Days Calibration Date Number of Days

3/30/2005 26453/31/2005 26464/1/2005 26474/2/2005 26484/3/2005 26494/4/2005 26504/5/2005 26514/6/2005 26524/7/2005 26534/8/2005 26544/9/2005 2655

4/10/2005 26564/11/2005 26574/12/2005 26584/13/2005 26594/14/2005 26604/15/2005 26614/16/2005 26624/17/2005 26634/18/2005 26644/19/2005 26654/20/2005 26664/21/2005 26674/22/2005 26684/23/2005 26694/24/2005 26704/25/2005 26714/26/2005 26724/27/2005 26734/28/2005 26744/29/2005 26754/30/2005 26765/1/2005 26775/2/2005 26785/3/2005 26795/4/2005 26805/5/2005 26815/6/2005 26825/7/2005 26835/8/2005 26845/9/2005 2685

5/10/2005 26865/11/2005 26875/12/2005 26885/13/2005 26895/14/2005 26905/15/2005 26915/16/2005 26925/17/2005 26935/18/2005 26945/19/2005 26955/20/2005 26965/21/2005 26975/22/2005 26985/23/2005 26995/24/2005 27005/25/2005 27015/26/2005 27025/27/2005 27035/28/2005 27045/29/2005 27055/30/2005 27065/31/2005 27076/1/2005 27086/2/2005 27096/3/2005 27106/4/2005 27116/5/2005 27126/6/2005 27136/7/2005 27146/8/2005 27156/9/2005 2716

6/10/2005 27176/11/2005 27186/12/2005 27196/13/2005 27206/14/2005 27216/15/2005 27226/16/2005 27236/17/2005 27246/18/2005 27256/19/2005 2726

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Calibration Date Number of Days Calibration Date Number of Days

6/20/2005 27276/21/2005 27286/22/2005 27296/23/2005 27306/24/2005 27316/25/2005 27326/26/2005 27336/27/2005 27346/28/2005 27356/29/2005 27366/30/2005 27377/1/2005 27387/2/2005 27397/3/2005 27407/4/2005 27417/5/2005 27427/6/2005 27437/7/2005 27447/8/2005 27457/9/2005 2746

7/10/2005 27477/11/2005 27487/12/2005 27497/13/2005 27507/14/2005 27517/15/2005 27527/16/2005 27537/17/2005 27547/18/2005 27557/19/2005 27567/20/2005 27577/21/2005 27587/22/2005 27597/23/2005 27607/24/2005 27617/25/2005 27627/26/2005 27637/27/2005 27647/28/2005 27657/29/2005 27667/30/2005 2767

7/31/2005 27688/1/2005 27698/2/2005 27708/3/2005 27718/4/2005 27728/5/2005 27738/6/2005 27748/7/2005 27758/8/2005 27768/9/2005 2777

8/10/2005 27788/11/2005 27798/12/2005 27808/13/2005 27818/14/2005 27828/15/2005 27838/16/2005 27848/17/2005 27858/18/2005 27868/19/2005 27878/20/2005 27888/21/2005 27898/22/2005 27908/23/2005 27918/24/2005 27928/25/2005 27938/26/2005 27948/27/2005 27958/28/2005 27968/29/2005 27978/30/2005 27988/31/2005 27999/1/2005 28009/2/2005 28019/3/2005 28029/4/2005 28039/5/2005 28049/6/2005 28059/7/2005 28069/8/2005 28079/9/2005 2808

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Calibration Date Number of Days Calibration Date Number of Days

9/10/2005 28099/11/2005 28109/12/2005 28119/13/2005 28129/14/2005 28139/15/2005 28149/16/2005 28159/17/2005 28169/18/2005 28179/19/2005 28189/20/2005 28199/21/2005 28209/22/2005 28219/23/2005 28229/24/2005 28239/25/2005 28249/26/2005 28259/27/2005 28269/28/2005 28279/29/2005 28289/30/2005 282910/1/2005 283010/2/2005 283110/3/2005 283210/4/2005 283310/5/2005 283410/6/2005 283510/7/2005 283610/8/2005 283710/9/2005 2838

10/10/2005 283910/11/2005 284010/12/2005 284110/13/2005 284210/14/2005 284310/15/2005 284410/16/2005 284510/17/2005 284610/18/2005 284710/19/2005 284810/20/2005 2849

10/21/2005 285010/22/2005 285110/23/2005 285210/24/2005 285310/25/2005 285410/26/2005 285510/27/2005 285610/28/2005 285710/29/2005 285810/30/2005 285910/31/2005 286011/1/2005 286111/2/2005 286211/3/2005 286311/4/2005 286411/5/2005 286511/6/2005 286611/7/2005 286711/8/2005 286811/9/2005 2869

11/10/2005 287011/11/2005 287111/12/2005 287211/13/2005 287311/14/2005 287411/15/2005 287511/16/2005 287611/17/2005 287711/18/2005 287811/19/2005 287911/20/2005 288011/21/2005 288111/22/2005 288211/23/2005 288311/24/2005 288411/25/2005 288511/26/2005 288611/27/2005 288711/28/2005 288811/29/2005 288911/30/2005 2890

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Appendix E Calibration Date Table

Calibration Date Number of Days Calibration Date Number of Days

12/1/2005 289112/2/2005 289212/3/2005 289312/4/2005 289412/5/2005 289512/6/2005 289612/7/2005 289712/8/2005 289812/9/2005 2899

12/10/2005 290012/11/2005 290112/12/2005 290212/13/2005 290312/14/2005 290412/15/2005 290512/16/2005 290612/17/2005 290712/18/2005 290812/19/2005 290912/20/2005 291012/21/2005 291112/22/2005 291212/23/2005 291312/24/2005 291412/25/2005 291512/26/2005 291612/27/2005 291712/28/2005 291812/29/2005 291912/30/2005 292012/31/2005 2921

1/1/2006 29221/2/2006 29231/3/2006 29241/4/2006 29251/5/2006 29261/6/2006 29271/7/2006 29281/8/2006 29291/9/2006 2930

1/10/2006 2931

1/11/2006 29321/12/2006 29331/13/2006 29341/14/2006 29351/15/2006 29361/16/2006 29371/17/2006 29381/18/2006 29391/19/2006 29401/20/2006 29411/21/2006 29421/22/2006 29431/23/2006 29441/24/2006 29451/25/2006 29461/26/2006 29471/27/2006 29481/28/2006 29491/29/2006 29501/30/2006 29511/31/2006 29522/1/2006 29532/2/2006 29542/3/2006 29552/4/2006 29562/5/2006 29572/6/2006 29582/7/2006 29592/8/2006 29602/9/2006 2961

2/10/2006 29622/11/2006 29632/12/2006 29642/13/2006 29652/14/2006 29662/15/2006 29672/16/2006 29682/17/2006 29692/18/2006 29702/19/2006 29712/20/2006 2972

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Calibration Date Number of Days Calibration Date Number of Days

2/21/2006 29732/22/2006 29742/23/2006 29752/24/2006 29762/25/2006 29772/26/2006 29782/27/2006 29792/28/2006 29803/1/2006 29813/2/2006 29823/3/2006 29833/4/2006 29843/5/2006 29853/6/2006 29863/7/2006 29873/8/2006 29883/9/2006 2989

3/10/2006 29903/11/2006 29913/12/2006 29923/13/2006 29933/14/2006 29943/15/2006 29953/16/2006 29963/17/2006 29973/18/2006 29983/19/2006 29993/20/2006 30003/21/2006 30013/22/2006 30023/23/2006 30033/24/2006 30043/25/2006 30053/26/2006 30063/27/2006 30073/28/2006 30083/29/2006 30093/30/2006 30103/31/2006 30114/1/2006 30124/2/2006 3013

4/3/2006 30144/4/2006 30154/5/2006 30164/6/2006 30174/7/2006 30184/8/2006 30194/9/2006 3020

4/10/2006 30214/11/2006 30224/12/2006 30234/13/2006 30244/14/2006 30254/15/2006 30264/16/2006 30274/17/2006 30284/18/2006 30294/19/2006 30304/20/2006 30314/21/2006 30324/22/2006 30334/23/2006 30344/24/2006 30354/25/2006 30364/26/2006 30374/27/2006 30384/28/2006 30394/29/2006 30404/30/2006 30415/1/2006 30425/2/2006 30435/3/2006 30445/4/2006 30455/5/2006 30465/6/2006 30475/7/2006 30485/8/2006 30495/9/2006 3050

5/10/2006 30515/11/2006 30525/12/2006 30535/13/2006 3054

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Appendix E Calibration Date Table

Calibration Date Number of Days Calibration Date Number of Days

5/14/2006 30555/15/2006 30565/16/2006 30575/17/2006 30585/18/2006 30595/19/2006 30605/20/2006 30615/21/2006 30625/22/2006 30635/23/2006 30645/24/2006 30655/25/2006 30665/26/2006 30675/27/2006 30685/28/2006 30695/29/2006 30705/30/2006 30715/31/2006 30726/1/2006 30736/2/2006 30746/3/2006 30756/4/2006 30766/5/2006 30776/6/2006 30786/7/2006 30796/8/2006 30806/9/2006 3081

6/10/2006 30826/11/2006 30836/12/2006 30846/13/2006 30856/14/2006 30866/15/2006 30876/16/2006 30886/17/2006 30896/18/2006 30906/19/2006 30916/20/2006 30926/21/2006 30936/22/2006 30946/23/2006 3095

6/24/2006 30966/25/2006 30976/26/2006 30986/27/2006 30996/28/2006 31006/29/2006 31016/30/2006 31027/1/2006 31037/2/2006 31047/3/2006 31057/4/2006 31067/5/2006 31077/6/2006 31087/7/2006 31097/8/2006 31107/9/2006 3111

7/10/2006 31127/11/2006 31137/12/2006 31147/13/2006 31157/14/2006 31167/15/2006 31177/16/2006 31187/17/2006 31197/18/2006 31207/19/2006 31217/20/2006 31227/21/2006 31237/22/2006 31247/23/2006 31257/24/2006 31267/25/2006 31277/26/2006 31287/27/2006 31297/28/2006 31307/29/2006 31317/30/2006 31327/31/2006 31338/1/2006 31348/2/2006 31358/3/2006 3136

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Calibration Date Table Appendix E

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 203

Calibration Date Number of Days Calibration Date Number of Days

8/4/2006 31378/5/2006 31388/6/2006 31398/7/2006 31408/8/2006 31418/9/2006 3142

8/10/2006 31438/11/2006 31448/12/2006 31458/13/2006 31468/14/2006 31478/15/2006 31488/16/2006 31498/17/2006 31508/18/2006 31518/19/2006 31528/20/2006 31538/21/2006 31548/22/2006 31558/23/2006 31568/24/2006 31578/25/2006 31588/26/2006 31598/27/2006 31608/28/2006 31618/29/2006 31628/30/2006 31638/31/2006 31649/1/2006 31659/2/2006 31669/3/2006 31679/4/2006 31689/5/2006 31699/6/2006 31709/7/2006 31719/8/2006 31729/9/2006 3173

9/10/2006 31749/11/2006 31759/12/2006 31769/13/2006 3177

9/14/2006 31789/15/2006 31799/16/2006 31809/17/2006 31819/18/2006 31829/19/2006 31839/20/2006 31849/21/2006 31859/22/2006 31869/23/2006 31879/24/2006 31889/25/2006 31899/26/2006 31909/27/2006 31919/28/2006 31929/29/2006 31939/30/2006 319410/1/2006 319510/2/2006 319610/3/2006 319710/4/2006 319810/5/2006 319910/6/2006 320010/7/2006 320110/8/2006 320210/9/2006 3203

10/10/2006 320410/11/2006 320510/12/2006 320610/13/2006 320710/14/2006 320810/15/2006 320910/16/2006 321010/17/2006 321110/18/2006 321210/19/2006 321310/20/2006 321410/21/2006 321510/22/2006 321610/23/2006 321710/24/2006 3218

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Appendix E Calibration Date Table

Calibration Date Number of Days Calibration Date Number of Days

10/25/2006 321910/26/2006 322010/27/2006 322110/28/2006 322210/29/2006 322310/30/2006 322410/31/2006 322511/1/2006 322611/2/2006 322711/3/2006 322811/4/2006 322911/5/2006 323011/6/2006 323111/7/2006 323211/8/2006 323311/9/2006 3234

11/10/2006 323511/11/2006 323611/12/2006 323711/13/2006 323811/14/2006 323911/15/2006 324011/16/2006 324111/17/2006 324211/18/2006 324311/19/2006 324411/20/2006 324511/21/2006 324611/22/2006 324711/23/2006 324811/24/2006 324911/25/2006 325011/26/2006 325111/27/2006 325211/28/2006 325311/29/2006 325411/30/2006 325512/1/2006 325612/2/2006 325712/3/2006 325812/4/2006 3259

12/5/2006 326012/6/2006 326112/7/2006 326212/8/2006 326312/9/2006 3264

12/10/2006 326512/11/2006 326612/12/2006 326712/13/2006 326812/14/2006 326912/15/2006 327012/16/2006 327112/17/2006 327212/18/2006 327312/19/2006 327412/20/2006 327512/21/2006 327612/22/2006 327712/23/2006 327812/24/2006 327912/25/2006 328012/26/2006 328112/27/2006 328212/28/2006 328312/29/2006 328412/30/2006 328512/31/2006 3286

1/1/2007 32871/2/2007 32881/3/2007 32891/4/2007 32901/5/2007 32911/6/2007 32921/7/2007 32931/8/2007 32941/9/2007 3295

1/10/2007 32961/11/2007 32971/12/2007 32981/13/2007 32991/14/2007 3300

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Calibration Date Table Appendix E

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 205

Calibration Date Number of Days Calibration Date Number of Days

1/15/2007 33011/16/2007 33021/17/2007 33031/18/2007 33041/19/2007 33051/20/2007 33061/21/2007 33071/22/2007 33081/23/2007 33091/24/2007 33101/25/2007 33111/26/2007 33121/27/2007 33131/28/2007 33141/29/2007 33151/30/2007 33161/31/2007 33172/1/2007 33182/2/2007 33192/3/2007 33202/4/2007 33212/5/2007 33222/6/2007 33232/7/2007 33242/8/2007 33252/9/2007 3326

2/10/2007 33272/11/2007 33282/12/2007 33292/13/2007 33302/14/2007 33312/15/2007 33322/16/2007 33332/17/2007 33342/18/2007 33352/19/2007 33362/20/2007 33372/21/2007 33382/22/2007 33392/23/2007 33402/24/2007 3341

2/25/2007 33422/26/2007 33432/27/2007 33442/28/2007 33453/1/2007 33463/2/2007 33473/3/2007 33483/4/2007 33493/5/2007 33503/6/2007 33513/7/2007 33523/8/2007 33533/9/2007 3354

3/10/2007 33553/11/2007 33563/12/2007 33573/13/2007 33583/14/2007 33593/15/2007 33603/16/2007 33613/17/2007 33623/18/2007 33633/19/2007 33643/20/2007 33653/21/2007 33663/22/2007 33673/23/2007 33683/24/2007 33693/25/2007 33703/26/2007 33713/27/2007 33723/28/2007 33733/29/2007 33743/30/2007 33753/31/2007 33764/1/2007 33774/2/2007 33784/3/2007 33794/4/2007 33804/5/2007 33814/6/2007 3382

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Appendix E Calibration Date Table

Calibration Date Number of Days Calibration Date Number of Days

4/7/2007 33834/8/2007 33844/9/2007 3385

4/10/2007 33864/11/2007 33874/12/2007 33884/13/2007 33894/14/2007 33904/15/2007 33914/16/2007 33924/17/2007 33934/18/2007 33944/19/2007 33954/20/2007 33964/21/2007 33974/22/2007 33984/23/2007 33994/24/2007 34004/25/2007 34014/26/2007 34024/27/2007 34034/28/2007 34044/29/2007 34054/30/2007 34065/1/2007 34075/2/2007 34085/3/2007 34095/4/2007 34105/5/2007 34115/6/2007 34125/7/2007 34135/8/2007 34145/9/2007 3415

5/10/2007 34165/11/2007 34175/12/2007 34185/13/2007 34195/14/2007 34205/15/2007 34215/16/2007 34225/17/2007 3423

5/18/2007 34245/19/2007 34255/20/2007 34265/21/2007 34275/22/2007 34285/23/2007 34295/24/2007 34305/25/2007 34315/26/2007 34325/27/2007 34335/28/2007 34345/29/2007 34355/30/2007 34365/31/2007 34376/1/2007 34386/2/2007 34396/3/2007 34406/4/2007 34416/5/2007 34426/6/2007 34436/7/2007 34446/8/2007 34456/9/2007 3446

6/10/2007 34476/11/2007 34486/12/2007 34496/13/2007 34506/14/2007 34516/15/2007 34526/16/2007 34536/17/2007 34546/18/2007 34556/19/2007 34566/20/2007 34576/21/2007 34586/22/2007 34596/23/2007 34606/24/2007 34616/25/2007 34626/26/2007 34636/27/2007 3464

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Calibration Date Table Appendix E

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 207

Calibration Date Number of Days Calibration Date Number of Days

6/28/2007 34656/29/2007 34666/30/2007 34677/1/2007 34687/2/2007 34697/3/2007 34707/4/2007 34717/5/2007 34727/6/2007 34737/7/2007 34747/8/2007 34757/9/2007 3476

7/10/2007 34777/11/2007 34787/12/2007 34797/13/2007 34807/14/2007 34817/15/2007 34827/16/2007 34837/17/2007 34847/18/2007 34857/19/2007 34867/20/2007 34877/21/2007 34887/22/2007 34897/23/2007 34907/24/2007 34917/25/2007 34927/26/2007 34937/27/2007 34947/28/2007 34957/29/2007 34967/30/2007 34977/31/2007 34988/1/2007 34998/2/2007 35008/3/2007 35018/4/2007 35028/5/2007 35038/6/2007 35048/7/2007 3505

8/8/2007 35068/9/2007 3507

8/10/2007 35088/11/2007 35098/12/2007 35108/13/2007 35118/14/2007 35128/15/2007 35138/16/2007 35148/17/2007 35158/18/2007 35168/19/2007 35178/20/2007 35188/21/2007 35198/22/2007 35208/23/2007 35218/24/2007 35228/25/2007 35238/26/2007 35248/27/2007 35258/28/2007 35268/29/2007 35278/30/2007 35288/31/2007 35299/1/2007 35309/2/2007 35319/3/2007 35329/4/2007 35339/5/2007 35349/6/2007 35359/7/2007 35369/8/2007 35379/9/2007 3538

9/10/2007 35399/11/2007 35409/12/2007 35419/13/2007 35429/14/2007 35439/15/2007 35449/16/2007 35459/17/2007 3546

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208 Welch Allyn Atlas Monitor Service Manual 6200-43E Rev. E

Appendix E Calibration Date Table

Calibration Date Number of Days Calibration Date Number of Days

9/18/2007 35479/19/2007 35489/20/2007 35499/21/2007 35509/22/2007 35519/23/2007 35529/24/2007 35539/25/2007 35549/26/2007 35559/27/2007 35569/28/2007 35579/29/2007 35589/30/2007 355910/1/2007 356010/2/2007 356110/3/2007 356210/4/2007 356310/5/2007 356410/6/2007 356510/7/2007 356610/8/2007 356710/9/2007 3568

10/10/2007 356910/11/2007 357010/12/2007 357110/13/2007 357210/14/2007 357310/15/2007 357410/16/2007 357510/17/2007 357610/18/2007 357710/19/2007 357810/20/2007 357910/21/2007 358010/22/2007 358110/23/2007 358210/24/2007 358310/25/2007 358410/26/2007 358510/27/2007 358610/28/2007 3587

10/29/2007 358810/30/2007 358910/31/2007 3590

11/1/2007 359111/2/2007 359211/3/2007 359311/4/2007 359411/5/2007 359511/6/2007 359611/7/2007 359711/8/2007 359811/9/2007 3599

11/10/2007 360011/11/2007 360111/12/2007 360211/13/2007 360311/14/2007 360411/15/2007 360511/16/2007 360611/17/2007 360711/18/2007 360811/19/2007 360911/20/2007 361011/21/2007 361111/22/2007 361211/23/2007 361311/24/2007 361411/25/2007 361511/26/2007 361611/27/2007 361711/28/2007 361811/29/2007 361911/30/2007 3620

12/1/2007 362112/2/2007 362212/3/2007 362312/4/2007 362412/5/2007 362512/6/2007 362612/7/2007 362712/8/2007 3628

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Calibration Date Table Appendix E

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 209

Calibration Date Number of Days Calibration Date Number of Days

12/9/2007 362912/10/2007 363012/11/2007 363112/12/2007 363212/13/2007 363312/14/2007 363412/15/2007 363512/16/2007 363612/17/2007 363712/18/2007 363812/19/2007 363912/20/2007 364012/21/2007 364112/22/2007 364212/23/2007 364312/24/2007 364412/25/2007 364512/26/2007 364612/27/2007 364712/28/2007 364812/29/2007 364912/30/2007 365012/31/2007 3651

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Serial Number Cut in History Appendix F

Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 211

Table F-1. Changed to a new BP Valve

Table F-2. Changed E-Pac. Changed to class B power supply.

Table F-3. Upgraded printer cable to a cable with foam tape attached.

The foam tape ads extra safety into the printer cable.

Table F-4. Upgraded the Main PCB from 501 to 502.

Upgraded the Main PCB to make it ESU tolerant. Added user feature to print on alarm or not print on alarm. Software changed to 2.2

Model Serial#

621N0 62201361

621SP 62100948

622N0 62201361

622NP 62201357

623SP 62300410

623NP 62300412

Model Serial#

621S0 62100935

621SP 62100941

622S0 62101305

622SP 62200135

622N0 62201305

622NP 62201312

623SP 62300405

623NP 62300408

Model Serial#

621xx 62104069

622xx 62208111

623xx 62304018

Model Serial#

621xx 62103000

622xx 62206000

623xx 62303000

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Appendix F Serial Number Cut in History

Table F-5. Upgraded the Nellcor SpO2 PCB from 204/205 to 506.

NOTE: The new Nellcor 506 SpO2 PCB is backward compatibly. The new 506 SpO2 sensor extension cable “DEC-8”, that can be identified by the purple connector, is backward com-patible with the older 204/205 SpO2 PCB. The older 204/205 SpO2 sensor extension cable “EC-8”, that can be identified by the gray connector, will not work “it will not physically plug into the Atlas connector” with the new Nellcor 506 SpO2 PCB. The software was changed to version 2.5.

The older sensors, that are indentified by the gray connector, will not work with the newer sensor extension cables even though the sensor will physically plug into the newer sensor extension cable “DEC-8”. The newer patient sensors have a purple connector and will work on the older sensor extension cables.

Model Serial#

621xx 62104000

622xx 62208000

623xx 62304000

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Service Manual 6200-43E Rev. E Welch Allyn Atlas Monitor 213

Atlas Calibration and Function Test FormAtlas Model Number______________ Atlas Serial Number_______________Calibration date__________________ Last Calibration date_______________Software Version_________________ Boot Revision_____________________SpO2 Manufacture_______________ SpO2 PCB________________________SpO2 Software Revision___________ CO2 Revision_____________________Last CO2 Reset Date:_______________ Last CO2 Calibration______________

Calibration ResultsPASS FAIL

____ ____ Date and time accuracy____ ____ BP calibration (50mmHg and 250mmHd)____ ____ CO2 reset____ ____ CO2 calibration____ ____ No load battery voltage calibration____ ____ Battery voltage calibration____ ____ Printer adjustment____ ____ Calibration date set____ ____ Software upgrade____ ____ Download NVRAM files

Functional test Results____ ____ Power on self test____ ____ Menu functional test____ ____ BP dymanic test____ ____ BP statc test____ ____ Over 15mmHg test____ ____ BP Dump test____ ____ Hardware functional test____ ____ ECG/Respiration test____ ____ SpO2 test____ ____ Temperature test____ ____ CO2 functional test____ ____ Battery functional tests____ ____ Printer functional test____ ____ Print on alarm test____ ____ ECG alarm test____ ____ Respiration alarm test____ ____ Silence alarm test____ ____ CO2/Respiration test____ ____ Blood Pressure alarm test

Date Completed__________ Technician_____________________

N/A=Not Applicable

Place a check mark by each of the following data items

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