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GE Medical Systems FC5001 Acuson 128 XP10 ART Modality: Ultrasoundg
Acuson 128 XP10 ART1.
Assembly and Disassembly
Component Locations
Error Codes
Functional Checks
Logic/Block Diagrams
Preventive Maintenance
Software
Theory
Troubleshooting/Diagnostics
HealthCare Learning Solutions
This program and its contents are RESTRICTED to GE Medical Systems. For GEMedical Systems personnel only. No rights licensed - do not use unless you are a GEMedical Systems employee. If you are not a GE Medical Systems employee, you mustclose this application immediately. Disclosure to third parties prohibited. HCLS-produceddocuments are not intended for use as documentation for field-based diagnostic imagingequipment. Copyright GE Medical Systems 2000.
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GE Medical Systems Acuson 128 XP10 ART Assembly and Disassembly
Assembly andDisassembly
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g
Assembly and Disassembly
Select an Assembly and Disassembly topic:Assembly and Disassembly Procedures Table
Chassis Top Cover
Scan Converter Card Cage Cover
Scan Converter CSI Board Cover
Scan Converter CSI Board
Scan Converter Card Cage
Scan Converter Fans and Temperature Sensor
Side Covers
Auxiliary I/O Panel
Hinge Open Chassis
Scan Converter Power Supply
Scan Converter Fan Controller
Audio Processor
Keyboard Assembly
Front Panel Controller
Front Panel Function Keys
Trackball Assembly
Keyboard Switch Assembly
Front Panel Paddle Switch Assembly
Front Panel Gain and Volume Potentiometers
Monitor Bezel and Panel Assembly
Soft Key Switch Assembly
Speakers
Depth Gain Control Assembly
2D-M Mode Encoder
Monitor Panel Paddle Switch Assembly
Right Probe Holder Housing
System/Video Control Panel
Monitor
GE Medical Systems Acuson 128 XP10 ART Assembly and Disassembly
Assembly andDisassembly
ComponentLocations
ErrorCodes
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gAssembly and Disassembly Procedures Table
Proc#
Picture(s) ProcedureTitle
Pre-Requisites
Step-by-StepProcedure
1 Page 14 Scan ConverterTop Cover
- 1. Remove 2 Philips screws from back corners of cover.2. Slide cover back 1/4” and lift to remove cover.
2 Page 15 Scan ConverterCard Cage
Cover
1 1. Loosen 14 Philips screws around the cover edges.2. Slide and lift cover out.3. Remove foam insert to access PCBs in scan converter.
3 Page 16 Scan ConverterCSI Board
Cover
- 1. Loosen 2 slotted knurled captive screws on each side panel cover.2. Remove side panel covers.3. Loosen 8 Philips screws on sides of CSI cover.4. Remove 6 Philips screws on upper and lower edges of CSI cover.5. Lift CSI cover to remove.
4 Page 16 Scan ConverterCSI Board
1, 2, 3 1. Detach CSI board connectors and ground clips.2. Loosen 8 slotted knurled captive screws around edges of connector panel.3. Loosen 4 slotted knurled captive screws on panel interior.4. Lift connector cover out.5. Pull up on both PCB ejectors and lift out the PCB.
5 Page 17 Scan ConverterCard Cage
1, 4, 7, 9 1. Remove 8 Philips screws on the edge of the scan converter card cage.2. Hinge open the chassis.3. Unplug Molex connectors at front and bottom of cage.4. Unscrew 2 digital power cables from terminals on bottom of cage.5. Close chassis.6. Lift card cage out.
6 Page 17 Scan ConverterFans And
TemperatureSensor
1, 5, 7 1. Remove 4 Philips screws securing fan panel to end of card cage.2. Unseat fan connector from card cage.3. Pull fan panel free.4. Remove 2 Philips screws securing temperature sensor PCB.5. Remove nuts from 2 studs on each fan housing to detach fans.
Continued on next page…
GE Medical Systems Acuson 128 XP10 ART Assembly and Disassembly
Assembly andDisassembly
ComponentLocations
ErrorCodes
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gAssembly and Disassembly Procedures Table (continued)
Proc#
Picture(s) ProcedureTitle
Pre-Requisites
Step-by-StepProcedure
7 Page 11 Side Covers - 1. Remove slotted screws at back of side covers.2. Unlatch latches at rear and bottom front of each cover.3. Grasp bottom of cover and work the cover loose.
8 Page 11 Auxiliary I/OPanel
- Note Assembly is located below the CSI.1. Remove 8 Philips screws at panel edges.2. Pull panel forward and away.
9 Page 13 Hinge OpenChassis
7 1. Remove 3 hexhead screws opposite the piano hinge.2. Lift up to open.Warning Do not extend the power supply tray while the chassis is hinged
open. The system could tip over.
10 Page 19 Scan ConverterPower Supply
7, 9 1. Remove 10 Philips screws from cover edges.2. Unplug Molex connectors.3. Unscrew +5V bus bar terminals.4. Remove 5 Philips screws from power supply frame.5. Lift power supply out.
11 Page 19 Scan ConverterFan Controller
7, 9 1. Remove 4 Philips screws and Molex connector from PCB2. Remove PCB from system.
12 Page 19 Audio Processor(AUD board)
7, 9 1. Unplug Molex connector.2. Remove 8 Philips screws.3. Lift out audio processor.
Continued on next page…
GE Medical Systems Acuson 128 XP10 ART Assembly and Disassembly
Assembly andDisassembly
ComponentLocations
ErrorCodes
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ReferenceMaterials
Notes
gAssembly and Disassembly Procedures Table (continued)
Proc#
Picture(s) ProcedureTitle
Pre-Requisites
Step-by-StepProcedure
13 Page 21 KeyboardAssembly
7 1. Remove 2 Philips screws under chassis left side.2. Hinge open chassis.3. Remove 9 Philips screws and connectors.4. Lift keyboard out.
14 Page 21 Front PanelController
7, 9, 13 1. Remove 4 Philips screws.2. Disconnect connectors.3. Lift Front Panel Controller out.
15 Page 22 Front PanelFunction Keys
7, 9, 13, 14 1. Remove 5 Philips screws.2. Disconnect connectors.3. Lift Front Panel Function Keys out.
16 Page 22 TrackballAssembly
7, 9, 13, 15 1. Remove 4 Philips screws.2. Lift Trackball Assembly out.3. Use a screwdriver to push connector retaining clips over, releasing assembly
connectors.17 Page 22 Keyboard
SwitchAssembly
7, 9, 13, 14 1. Remove 2 Philips screws from front panel controller mounting bracket.2. Lift front panel controller out.3. Remove 4 Philips screws securing keyboard switch assembly.4. Unplug connectors.5. Lift keyboard switch assembly out.
18 Page 22 Front PanelPaddle Switch
Assembly
7, 13, 14 1. Remove 6 Philips screws.2. Pull assembly free and remove.
Continued on next page…
GE Medical Systems Acuson 128 XP10 ART Assembly and Disassembly
Assembly andDisassembly
ComponentLocations
ErrorCodes
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gAssembly and Disassembly Procedures Table (continued)
Proc#
Picture(s) ProcedureTitle
Pre-Requisites
Step-by-StepProcedure
19 Page 23 Front PanelGain andVolume
Potentiometers
7, 9, 13 1. Loosen hex setscrews on gain and volume knobs.2. Remove knobs.3. Remove 8 Philips screws from metal frame.4. Lift switch assembly out.5. Unplug connectors for gain and volume potentiometers.6. Remove mounting nuts and pull out.
20 Page 23 Monitor Bezeland PanelAssembly
1, 7, 9, 13,25
1. Remove 2 Philips screws.2. If equipped, undo bezel retaining springs.3. Release connectors and cables.4. Tilt forward and lift up to remove assembly.Warning The cardboard backing behind the soft key assembly can curl.
While removing the assembly, do not let the backing catch on thesoft switch mounting board and break the soft switch keys.
21 Page 23 Soft Key SwitchAssembly
1, 7, 9, 13,20
Note Assembly is mounted on the monitor bezel.1. Remove 2 mounting screws from monitor bezel back.2. Lift assembly off.
22 Page 23 Speakers 1, 7, 9, 13,20
1. Disconnect connectors.2. Remove 2 Philips screws.3. Remove speakers.
23 Page 23 Depth GainControl
Assembly
1, 7, 9, 13,20
1. Remove 4 Philips screws.2. Loosen hex set screws on 2D-M Mode gain encoder knobs.3. Remove knobs.4. Disconnect connectors.5. Lift assembly out.
24 Page 23 2D-M ModeEncoder
1, 7, 9, 13,20, 22
1. Remove mounting nut.2. Unplug connectors.3. Remove encoders.
Continued on next page…
GE Medical Systems Acuson 128 XP10 ART Assembly and Disassembly
Assembly andDisassembly
ComponentLocations
ErrorCodes
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Logic/BlockDiagrams
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gAssembly and Disassembly Procedures Table (continued)
Proc#
Picture(s) ProcedureTitle
Pre-Requisites
Step-by-StepProcedure
25 none Monitor PanelPaddle Switch
Assembly
1, 7, 9, 13,20, 22
Note Only needed if separate from Depth and Gain Control Assembly.1. Remove 4 Philips screws.2. Disconnect connectors.3. Lift assembly out.
26 none Right ProbeHolder Housing
1, 7 1. Remove 2 Philips nuts from top of housing.2. Push top back and lift out.
27 none System/VideoControl Panel
1, 7, 9, 13,20
Note Only needed if panel is separate from monitor bezel assembly.1. Remove 4 Philips screws at panel bottom.2. Disconnect connectors.3. Lift assembly out.
28 Page 14 Monitor 1, 7, 9, 13,20
1. Loosen 4 Philips screws on monitor frame.2. Disconnect AC power Molex connector.3. Loosen 2 nuts on right of monitor mounting plate.4. Remove 4 Philips screws on monitor frame.5. Slide mounting plate to right.6. Pull monitor out through front.
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
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g
Component Locations
Select a Component Locations topic:
Cabinet Exterior• Front
• Left Side
• Rear
• Right Side
Circuit Boards• Scanner
• Scan Converter
Accessing Interior• Remove Side Covers
• Hinge Chassis Open
• Remove Scan Converter Top Cover
• Access Scan Converter Boards
• Remove CSI Board Coverand CSI Board
• Remove Scan Converter Card Cage,Fans, and Temperature Sensor
• Open Power Supply Drawer
• Chassis Hinged Open / AccessScan Converter Power Supply
• Access Digital 5-Volt Power Supply
Accessing Interior (continued)• Remove Keyboard Assembly and
Front Panel Controller Board
• Remove Trackball, Function Keys,Paddle Switch, and Keyboard SwitchAssemblies
• Remove Monitor Bezel / Front Paneland Related Assemblies
• Access Scanner Boards
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
FunctionalChecks/Procedures
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PreventiveMaintenance
Software Theory Troubleshooting/Diagnostics
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Notes
gCabinet Exterior – Front
Front Bezel
Speaker
Monitor TGCsSoftKeys
KeyboardAssembly
FunctionKeysPaddle
SwitchAssembly
Trackball
RubberHandles
Keyboard
ProbeConnector
ProbeConnector
ProbeConnector
Holders
PeripheralStorage
PowerSwitch
FootSwitch
Connector
Brake
MonitorTest/ResetControls
Move toRear of
Unit
Move to LeftSide of Unit
Move to RightSide of Unit
Gain andVolumeControls
Remove
Remove
RemoveRemove
Remove
Remove
Remove
Remove
Remove
Remove
Remove
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
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gCabinet Exterior – Left Side
StoragePocket
Move toRight Side
of Unit
Move to Rearof Unit
Move to Frontof Unit
CordWrapHook
ProbeHolder
Latches for sidecover removal
FrontBezel
TopCover
SidePanel
Removeside cover
Remove Remove
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
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gCabinet Exterior – Rear
Remove 2screws to
remove topcover
Mesh Filter(not shown)
Move toFront of
Unit
Move to RightSide of Unit
Move to LeftSide of Unit
Left sidepanelscrews
Rightside
panelscrews
AuxiliaryI/O panelscrewsAuxiliary
I/O panelscrews
SerialNumber
PowerCord
Rightside
coverscrews
Leftsidecoverscrews
Rightside
coverlatch
Leftsidecoverlatch
PowerSupplyaccessscrews Aux. AC
Outlets
CircuitBreakers
CSI BoardCover
Screws (8)
Remove Remove
Open
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
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gCabinet Exterior – Right Side
Move toLeft Sideof Unit
Move to Frontof Unit
Move to Rearof Unit
CordWrapHook
ProbeHolder
Latches for sidecover removal
FrontBezel
TopCover
SidePanel
Removeside cover
RemoveRemove
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
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gAccessing Interior – Side Covers Removed / Hinge Open Chassis
Left Side Cover Removed Right Side Cover Removed
BNC TestPanel on
DBL Board
Bus Cable
Click here for instructions onside cover removal
andhinging chassis open
5 Volt DigitalSupply
Remove cover
3 Molex connectors fromScan ConverterPower Supplyto DBL Board
Fan Driver Board (1 of 2)
Remove 4 screws andMolex to disconnect
Remove 3 screws tohinge open chassis
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
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gAccessing Interior – Remove Top Cover
Click here for instructionson removing the monitor
Monitor Assembly (shown from top) Monitor Assembly Types: Data Ray (left) and Barco
Remove 2 screws toremove top cover
MountingBrackets
Access ScanConverter Boards
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
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gAccessing Interior – Access Scan Converter Boards
Pre-requisite(s):• Remove Top Cover
Scan Converter Card Cage Cover Scan Converter Card Cage Cover Removed
Loosen(DO NOT REMOVE)14 screws and slide
cover out
CSI Board
CED Board
CVC Board
CSC Board
FEB Board
FEC Board
DAQ Board
DSP Board
DCP Board
IC Board
CMB Boardor MMB Board
OC Board
Remote PortInterface Cable
DopplerDigital Cable
Click here to seescanner card cage
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
FunctionalChecks/Procedures
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ReferenceMaterials
Notes
gAccessing Interior – Remove CSI Board Cover and CSI Board
To remove CSI Board (from this point):• Detach CSI board connectors and ground clips.• Loosen 8 slotted knurled captive screws ( ) around edges of connector panel.• Loosen 4 slotted knurled captive screws ( ) on panel interior.
Scan Converter CSI Board Cover Removed
Click here to seeCSI Board layoutand J-Connector
descriptions
Click here to seefull disassembly
instructions
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
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ErrorCodes
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gAccessing Interior – Remove Scan Converter Card Cage, Fans, and Temperature Sensor
Scan Converter Card Cage Removed
Click here to seefull disassembly
instructions
Click here to seescanner card cage
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
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gAccessing Interior – Open Power Supply Drawer
Click here to seeScan ConverterPower Supply
Remove PowerSupply Draweraccess screws Isolation
Transformer
Analog PowerSupply
Click here to see5-Volt DigitalPower Supply
Soft StartRelay
ProgrammablePower Supply
PowerDistribution
Board 2LED
Display
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
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gAccessing Interior – Chassis Hinged Open / Access Scan Converter Power Supply
Pre-requisite(s):• Remove Side Covers
• Hinge Open Chassis
s
Scan Converter Hinged Open Scan Converter Power Supply (Cover Off)
Click here for fullPower Supply
removalinstructions
Molex
Scan ConverterPower Supply
AUDBoard
Trackball
Lamp fuseaccess
Keyboardassembly
Fan Driver Board (1 of 2)
Remove 4 screws ( )and Molex to disconnect
Bus
Remove 10screws ( )to removecover plate
Click here to seePower Supplies
in PowerSupply Drawer
Click here to see5-Volt DigitalPower Supply
Molex
+5V Bus BarTerminals+5V Bus BarTerminals
Access Scanner Boards
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
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ReferenceMaterials
Notes
gAccessing Interior – Access Digital 5-Volt Power Supply
Pre-requisite(s):• Remove Left Side Cover
Left Side Cover Removed 5-Volt Digital Power Supply Cover Removed
Click here to seePower Supplies
in PowerSupply Drawer
Click here for instructions onside cover removal
5-Volt DigitalSupply
Remove screws toremove cover plate
Click here to seeScan ConverterPower Supply
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
FunctionalChecks/Procedures
Logic/BlockDiagrams
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Software Theory Troubleshooting/Diagnostics
ReferenceMaterials
Notes
gAccessing Interior – Remove Keyboard Assembly and Front Panel Controller Board
Pre-requisite(s):• Remove Side Covers
• Hinge Open Chassis
To remove Keyboard Assembly from Scan Converter (from this point):• Remove 9 Philips screws ( ) around edges of keyboard assembly• Disconnect all connectors• Lift keyboard assembly out
To remove Front Panel Controller board from Keyboard Assembly:• Disconnect all connectors• Remove 4 Philips screws ( ) and pull board free
Scan Converter Hinged Open Keyboard Assembly Removed From Scan Converter
Click here to see fullKeyboard Assemblyremoval instructions
Front PanelControllerboardRemove
Function KeysAssembly
Connectors
Keyboard SwitchAssembly
Paddle SwitchAssembly
Click here to see fullFront Panel Controller board
removal instructions
Access Scanner Boards
Remove Keyboard Assemblyfrom Scan Converter
TrackballAssembly
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
FunctionalChecks/Procedures
Logic/BlockDiagrams
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ReferenceMaterials
Notes
gAccessing Interior – Remove Trackball, Function Keys, Paddle Switch, and Keyboard Switch Assemblies
Pre-requisite(s):• Remove Side Covers
• Hinge Open Chassis
• Remove KeyboardAssembly
• Remove Front PanelController Board
To remove any of the assemblies (from this point):Disconnect connectors, then remove screws and lift assembly out.
• Trackball assembly – 4 Philips screws ( )• Function Keys assembly – 5 Philips screws ( )• Paddle Switch assembly – 6 Philips screws ( )• Keyboard Switch assembly – 4 Philips screws ( )
Keyboard Assembly: Front Panel Controller Board Attached (left) and Removed (right)
Click here to see fullremoval instructions foreach assembly shown
TrackballAssembly
Keyboard SwitchAssembly
Paddle SwitchAssembly
Remove Front PanelController board toaccess assemblies
Function KeysAssembly
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
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Logic/BlockDiagrams
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ReferenceMaterials
Notes
gAccessing Interior – Remove Monitor Bezel / Front Panel and Related Assemblies
Pre-requisite(s):• Remove Top Cover
• Remove Side Covers
• Hinge Open Chassis
• Remove KeyboardAssembly
Remove Monitor Bezel / Front Panel to access related assemblies:
Keyboard Assembly: Front Panel Controller Board Attached (left) and Removed (right)
Click here to see fullremoval instructions foreach related assembly
Monitor Bezel
Click here to see fullMonitor Bezel / Front Panel
removal instructions
RemoveMonitorBezel /Front Panel
Soft Key SwitchAssembly
Gain and Volume Potentiometers,2D-M Encoders,Paddle Switch Assembly
Depth GainControl Assembly(TGC3 Board)
Speaker
Monitor Bezel /Front Panel screws
Speaker
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
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gAccessing Interior – Access Scanner Boards
Pre-requisite(s):• Remove Top Cover
• Remove Side Covers
• Hinge Open Chassis
Cover Plate screw locations:
Note Starred (*) boards are not shown installed.
Scan Converter Hinged Open Scanner Card Cage – Unique Board Locations
Continued on next page…
Remove 14 screws oncover plate to accessscanner boards
DBL Board
TDI Board
VDT BoardIFD Board*BBQ BoardAUXCWBoard*
IGD Board
STG Board
DCC1 BoardMEX BoardDCC0 BoardSCP BoardDBR BoardClick here for
XMT and XDYBoard locations
Click here forRCV and APD
Board locations
Click here forSDL and MXK
Board locations
Click here to seescan converter card cage
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
FunctionalChecks/Procedures
Logic/BlockDiagrams
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Software Theory Troubleshooting/Diagnostics
ReferenceMaterials
Notes
gAccessing Interior – Access Scanner Boards (continued)
Pre-requisite(s):• Remove Top Cover
• Remove Side Covers
• Hinge Open Chassis
Cover Plate screw locations:
Scan Converter Hinged Open Scanner Card Cage – XMT and XDY Board Locations
Continued on next page…
Remove 14 screws oncover plate to accessscanner boards
Click here forUnique Board
locations
Click here forRCV and APD
Board locations
Click here forSDL and MXK
Board locations
XMT 112-127
XMT 96-111
XMT 80-95
XMT 64-79
XMT 48-63
XMT 32-47
XMT 16-31
XMT 0-15
XDY 112-127XDY 96-111XDY 80-95XDY 64-79XDY 48-63XDY 32-47XDY 16-31XDY 0-15
Click here to seescan converter card cage
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
FunctionalChecks/Procedures
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ReferenceMaterials
Notes
gAccessing Interior – Access Scanner Boards (continued)
Pre-requisite(s):• Remove Top Cover
• Remove Side Covers
• Hinge Open Chassis
Cover Plate screw locations:
Scan Converter Hinged Open Scanner Card Cage – RCV and APD Board Locations
Continued on next page…
Click here forXMT and XDY
Board locations
Click here forUnique Board
locations
Click here forSDL and MXK
Board locations
Remove 14 screws oncover plate to accessscanner boards
APD 96-127
APD 64-95
APD 32-63
APD 0-31
RCV 120-127
RCV 104-111
RCV 88-95
RCV 72-79
RCV 56-63
RCV 40-47
RCV 24-31
RCV 8-15
RCV 112-119
RCV 96-103
RCV 80-87
RCV 64-71
RCV 48-55
RCV 32-39
RCV 16-23
RCV 0-7Click here to see
scan converter card cage
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
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ErrorCodes
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gAccessing Interior – Access Scanner Boards (continued)
Pre-requisite(s):• Remove Top Cover
• Remove Side Covers
• Hinge Open Chassis
Cover Plate screw locations:
Scan Converter Hinged Open Scanner Card Cage – SDL and MXK Board Locations
Click here forXMT and XDY
Board locations
Click here forRCV and APD
Board locations
Click here forUnique Board
locations
Remove 14 screws oncover plate to accessscanner boards
SDL 112-127
SDL 96-111
SDL 80-95
SDL 64-79
SDL 48-63
SDL 32-47
SDL 16-31
SDL 0-15
MXK 96-127
MXK 64-95
MXK 32-63
MXK 0-31
Click here to seescan converter card cage
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
FunctionalChecks/Procedures
Logic/BlockDiagrams
PreventiveMaintenance
Software Theory Troubleshooting/Diagnostics
ReferenceMaterials
Notes
gScan Converter Circuit Boards
Overview:
Scanner Card Cage
Scanner Circuit Boards
Scan Converter Card Cage
Select a Scan Converter Circuit Board:AUD (Audio Processor) board
CED (Color Encoder Decoder) board
CMB (Cine Memory Board) board
CSC (Color Scan Converter) board
CSI (Common System Interconnect) board
CVC (Common Video Controller) board
DAQ (Doppler Acquisition) board
DCP (Display Control Processor) board
DSP (Doppler Spectral Processor) board
FEB (Flow Estimator Buffer) board
FEC (Flow Estimator Calculator) board
FPC (Front Panel Controller) board
IC (Input Controller) board
MMB (Main Memory) board
OC (Output Controller) board
PEM (PROM Expansion Module) board
SCM (Strip Chart / M-mode) board
SCMB (Scan Converter Motherboard) board
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
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gScanner Circuit Boards
Overview:
Scan Converter Card Cage
Scan Converter Circuit Boards
Scanner Card Cage
Select a Scanner Circuit Board:APD (Apodizer) board
AUX CW (Auxiliary Continuous Wave Doppler) board
BBQ (Base Band Quadrature) board
DBL (Distribution Board Left) board
DBR (Distribution Board Right) board
DCC (Dual Channel Controller) board
IFD (Intermediate Frequency Detector) board
IGD (Interpolated Gain Detector) board
MEX (Memory Expansion) board
MXK (Mixer Clock) board
RCV (Receiver) board
SCP (Scan Control Processor) board
SDL (Summing Delay Line) board
SMB (Scanner Motherboard) board
STG (Scanner Timing Generator) board
TDI (Transducer Interconnect) board
TRM (Terminator) board
VDT (Video Detector) board
XDY (Transmit Delay) board
XMT (Transmitter) board
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
ComponentLocations
ErrorCodes
FunctionalChecks/Procedures
Logic/BlockDiagrams
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Notes
gScan Converter Circuit Boards (continued)
AUD (Audio Processor) Board
See AUD Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScan Converter Circuit Boards (continued)
CED (Color Encoder Decoder) Board
See CED Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
DiagnosticLED
Factory-set potsDo not adjust!
Factory-set potsDo not adjust!
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScan Converter Circuit Boards (continued)
CMB (Cine Memory Board) Board
See CMB Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
DiagnosticLED
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScan Converter Circuit Boards (continued)
CSC (Color Scan Converter) Board
See CSC Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
Factory test connectorDo not use!
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gScan Converter Circuit Boards (continued)
CSI (Common System Interconnect) Board
Note CSI Release 2 shown.CSI Release 3 does not use indicated connections.
See CSI Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
NMI SwitchStops Operating System
SWA Dipswitches forfactory testing/diagnostics
Click here to seeCSI interconnect map
Not Usedon CSI 3
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gScan Converter Circuit Boards (continued)
CSI (Common System Interconnect) Board
J16 J13 J8 J3
VCR A Remote Intf GPC Parallel Intf Page Printer* MF Camera*
J21 J17 J14 J9 J4
Component Video VCR B Remote Intf GPC PCC Intf BW Polaroid* Scan Data
J22 J18 J15 J10 J5
RGB Polaroid Video Control Port C GPA Line Printer Serial Channel A Scan ADR
J23 J11 J6
Composite Video Serial Channel B Scan Control Intf
J24 J19 J12 J7
RGB Monitor/Aux Vid AUD Board Intf Footswitch FPC Intf
J25 J20
Strip Chart Intf Strip Chart Intf
Note CSI Release 2 shown.CSI Release 3 does not use starred (*) connections.
See CSI Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
Click here to seeCSI board photo
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gScan Converter Circuit Boards (continued)
CVC (Common Video Controller) Board
See CVC Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
3.9V LithiumBatteries
DiagnosticLED
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScan Converter Circuit Boards (continued)
DAQ (Doppler Acquisition) Board
See DAQ Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
DiagnosticLED
Doppler DigitalRibbon Cable Connector
Remote Port InterfaceRibbon Cable Connector
Dipswitches
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gScan Converter Circuit Boards (continued)
DCP (Display Control Processor) Board
See DCP Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
DiagnosticLED
Remote Port InterfaceRibbon Cable Connector
A, B, C, D BusConnector
PhysioInterface Cable
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScan Converter Circuit Boards (continued)
DSP (Doppler Spectral Processor) Board
See DSP Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
Doppler DigitalRibbon Cable Connector
Remote Port InterfaceRibbon Cable Connector
DiagnosticLED
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScan Converter Circuit Boards (continued)
FEB (Flow Estimator Buffer) Board
See FEB Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
DiagnosticLED
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
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gScan Converter Circuit Boards (continued)
FEC (Flow Estimator Calculator) Board
See FEC Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
DiagnosticLED
Doppler DigitalRibbon Cable Connector
Remote Port InterfaceRibbon Cable Connector
Dipswitches
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScan Converter Circuit Boards (continued)
FPC (Front Panel Controller) Board
See FPC Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
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gScan Converter Circuit Boards (continued)
IC (Input Controller) Board
See IC Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
DiagnosticLED
A, B, C, D BusConnector
Remote Port InterfaceRibbon Cable Connector
Factory-set potsDo not adjust!
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
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gScan Converter Circuit Boards (continued)
MMB (Main Memory) Board
See MMB Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
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gScan Converter Circuit Boards (continued)
OC (Output Controller) Board
See OC Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
Factory test connectorsDo not use!
DiagnosticLED
Dipswitches Dipswitches
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScan Converter Circuit Boards (continued)
PEM (PROM Expansion Module) Board
Picture unavailable at time of publication
See PEM Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
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gScan Converter Circuit Boards (continued)
SCM (Strip Chart / M-mode) Board
Picture unavailable at time of publication
See SCM Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScan Converter Circuit Boards (continued)
SCMB (Scan Converter Motherboard) Board
Picture unavailable at time of publication
See SCMB Board location Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScanner Circuit Boards (continued)
APD (Apodizer) Board
See APD Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScanner Circuit Boards (continued)
AUX CW (Auxiliary Continuous Wave Doppler) Board
See AUX CW Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
GE Medical Systems Acuson 128 XP10 ART Component Locations
Assembly andDisassembly
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gScanner Circuit Boards (continued)
BBQ (Baseband Quadrature) Board
See BBQ Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
Factory-set potsDo not adjust!
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScanner Circuit Boards (continued)
DBL (Distribution Board Left) Board
See DBL Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
BNC Test Panel(On back)
Molex Connections(On back)
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScanner Circuit Boards (continued)
DBR (Distribution Board Right) Board
See DBR Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScanner Circuit Boards (continued)
DCC (Dual Channel Controller) Board
See DCC Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
IFD (Intermediate Frequency Detector) board
See IFD Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
Ribbon Cable to VDTCarries heterodyned RF
Factory-set potDo not adjust!
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gScanner Circuit Boards (continued)
IGD (Interpolating Gain Driver) Board
See IGD Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
TP 0-10
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScanner Circuit Boards (continued)
MEX (Memory Expansion) Board
See MEX Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
MXK (Mixer Clock) Board
See MXK Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
RCV (Receiver) Board
See RCV Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
Factory-set potsDo not adjust!
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gScanner Circuit Boards (continued)
SCP (Scanner Control Processor) Board
See SCP Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
SDL (Summing Delay Line) Board
See SDL Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
TP1TP2
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gScanner Circuit Boards (continued)
SMB (Scanner Motherboard) board
Picture unavailable at time of publication
See SMB Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
STG (Scanner Timing Generator) Board
See STG Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
TDI (Transducer Interconnect) Board
See TDI Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
TransducerConnectors
Front
Back
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gScanner Circuit Boards (continued)
TRM (Terminator) Board
See TRM Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
VDT (Video Detector) Board
See VDT Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
Ribbon Cable to IFDCarries heterodyned RF
GE Medical Systems Acuson 128 XP10 ART Component Locations
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gScanner Circuit Boards (continued)
XDY (Transmit Delay) Board
See XDY Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
XMT (Transmitter) Board
See XMT Board location Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
0.8 Amp Picofuse16 fuses total
GE Medical Systems Acuson 128 XP10 ART Error Codes
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g
Error Codes
Select an Error Codes topic:Power Supply Error Codes
Scan Converter Power-Up Error Codes
Scanner Power-Up Error Codes
GE Medical Systems Acuson 128 XP10 ART Error Codes
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gPower Supply Error CodesThese codes are displayed on the numeric LED in the back right corner of the power supply drawer.
Note If the LED indicates a failure, there are usually other symptoms that indicate another problem, such astotal system power-up failure. Investigate the other symptoms before assuming a power supply failure.
Error Code Translation1 Low AC Line Voltage (below 95VAC)2 Low 300V Bus (below 250VDC)3 High 300V Bus (above 360VDC)4 Scan Converter Power Supply Failure5 Power Supply Drawer Overtemperature or Fan Failure6 Scanner Overtemperature or Fan Failure7 Scan Converter Overtemperature8 Scanner Digital 5V Power Supply Fault9 Scanner Low Voltage Power Supply Fault
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gScan Converter Power-Up Error CodesAt system power-up, the system runs a series of self-tests. If any self-test fails, the system generates a list of errorcodes by subassembly.
Note Although the error may list a specific board, an associated board may be the real problem.
Error Code Probable CauseOC 3 PU ERROR • OC 3
• MMB or CMB• IC 2• CVC or VC
IC2 PU ERROR • IC 2• MMB or CMB• OC 3
MMB PU ERROR • MMB• OC 3• IC 2
CMB PU ERROR • CMB• OC 3• IC 2
DSP PU ERROR • DSP• DAQ• DCP
DAQ PU ERROR • DAQ• DSP• DCP
Error Code Probable CauseDCP PU ERROR • DCP
• DAQ• DSP
FP PU ERROR • FP x• OC 3
SCM PU ERROR • SCM• IC 2
FEC PU ERROR • FEC• FEB• CSC
FEB PU ERROR • FEC• FEB• CSC
CSC PU ERROR • FEC• FEB• CSC
CVC OR VC PUERROR
Invalid character on text screen 1 ortext screen 2. Check:• CVC or VC• OC
GE Medical Systems Acuson 128 XP10 ART Error Codes
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gScanner Power-Up Error CodesAt system power-up, the system runs a series of self-tests. If any self-test fails, the system generates a list of errorcodes by subassembly.
Note Although the error may list a specific board, an associated board may be the real problem.
Error Code Probable CauseScanner InterruptPower Up Error(S.INTRPT)
• SCP• STG• DCC• DBR• CSI• MEX• Interconnect cables
Dual Port RAMPower Up Error(DPR)
• DBR• SCP• CSI• Interconnect cables
Scan ControlProcessor Power UpError (SCP)
SCP
Error Code Probable CauseDual ChannelController Power UpError (DCC)
• DCC• SCP
MEX Power Up Error • MEX• SCP
Power SupplyFailure
• Programmable Power Supply• DBR• Interconnect Cables
Scanner andMicrocodeIncompatible
Scanner Control Processor cannotread MEX - Check MEX
GE Medical Systems Acuson 128 XP10 ART Functional Checks/Procedures
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g
Functional Checks/Procedures
Note All functional checks and procedures are outlined as part of the Preventive Maintenance procedures.Refer to that section for more information.
GE Medical Systems Acuson 128 XP10 ART Logic/Block Diagrams
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g
Logic/Block Diagrams
Select a diagram:System Overview
Transmit Cycle
Receive Cycle with Input at TDI
Scanner
Scan Converter
Scan Converter 2D Image Signal Path
Scan Converter Color Doppler Signal Path
Scan Converter Spectral Doppler Signal Path
Power Supplies
CSI and I/O Interconnections
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GE Medical Systems Acuson 128 XP10 ART Preventive Maintenance
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g
Preventive Maintenance
Select a Preventive Maintenance topic:Verification of Function
Hard Copy Back-Up
Disassembly and Cleaning
Power Supply Check
Common Video Controller
Electrical Safety Inspection
Operational Checks
Functional Checks
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gVerification of FunctionVerify (with operator) system function meets customer’s requirements.
Document any problems. If possible, repair during preventive maintenance.
Hard Copy Back-Up1) Press <TEST>, <CODE>, and <SHIFT><V> to access the Service Menu.
2) Scroll through the menu selections and make hard copies of:
• Version Report (101)
• Configuration Report (102)
• most important Encryption Strings (109)
Disassembly and Cleaning1) Remove all top and side panels.
2) Vacuum or blow the system clean of dust and debris.
3) Vacuum all filters. Replace any filters impacted with dust.
4) Pull out power supply drawer and vacuum or blow out dust build-up.
5) Vacuum or blow out dust build-up from honeycomb grid in center of scanner front and rear section.
6) Clean all exterior surfaces (including keyboard and monitor) with appropriate cleaning solution.
7) Carefully clean probe cables and transducer with appropriate solutions.
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gPower Supply CheckVerify all voltages meet Acuson specifications.
Check connectors J5, J6, J7 and J32 on chassis.
Note Voltages may also be checked on DBL board at TP 5-10.
Common Video ControllerVerify battery voltage will hold the NVRAM (above 3.6VDC).
Electrical Safety Inspection1) Assure system electrical safety inspection is performed with system completely assembled.
2) Verify that no external grounding paths exist (such as peripheral cabling) that may cause erroneous currentleakage measurements.
Warning Any probe failing electrical safety inspection must be removed from service immediately.
Operational ChecksNote Make note of original control positions before performing checks. Return to original positions after
checks.
Check all front panel controls:
• Pushbutton switches
• Paddle switches
• Rotary and slide potentiometers (including monitor brightness and contrast controls)
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gFunctional Checks1) 2D function
• Verify image quality using test phantom.
• Verify caliper accuracy using test phantom.
• Verify proper resolution using test phantom
• Verify probe penetration using test phantom.
• Make hard copies of phantom images for every transducer.
2) Pulsed Doppler function
Note If possible, verify operation using blood vessel flow.
• Check function used (such as gate, scale, baseline, filter, gain, etc.)
3) 2D Color Doppler function
Note If possible, verify operation using blood vessel flow.
• Verify function of CD RES box, invert, move and size.
• Verify angel function Left/Center/Right using linear probe.
4) Continuous Wave Doppler
• Verify spectral display.
Continued on next page…
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gFunctional Checks (continued)5) M-Mode
• Verify cursor operation.
Note If possible, image Cardiac Mitral Valve.
6) Triplex Mode (system option)
• Verify operation.
7) Cine Loop Memory (system option)
• Verify operation.
8) Image Archival and Retrieval (system option)
• Verify operation.
9) Peripheral Equipment (varies)
• Verify operation.
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g
Software
Note There is no software associated with this system.
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g
Theory
Select a Theory topic:General System Theory
Scanner Theory
Scan Converter Theory
Power Supply Theory
Circuit Board Theory
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gGeneral System TheoryThe system can be divided into three major assemblies.
• Scanner
• Scan Converter
• Power Supplies
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gGeneral System Theory (continued)
ScannerTo provide beamforming, the scanner uses digital and analog circuit boards to control the timing, phase, andamplitude of signals for each of the system channels.
Scanner subsystems include:
• Beamformer
• Beamformer Driver
• Digital Process And Control
• Video Gains And Processing
• Doppler Processing
• Input / Output Interconnect
See scanner function diagram and scanner theory for additional information.
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gGeneral System Theory (continued)Scan Converter
The scan converter receive an analog ultrasound signal (with related information such as scan line number, depthand focus) from the scanner. The scan converter uses this signal to form the image.
Scan converter functions include:
• Digitize analog ultrasound information
• Store digitized ultrasound information for processing
• Post-processing
• Calculations
• Generate alpha-numeric and graphic overlays
• Interface front panel controls with recording devices
See scan converter function diagram and scan converter theory for additional information.
Power SuppliesThe main power supply (in the power supply drawer) converts 125 VAC to various regulated DC levels used in thesystem.
See power supply function diagram and power supply theory for additional information.
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gSelect a Scanner Theory topic:General Scanner Theory
Scanner Set-Up
Transmission
Reception
Scanner Circuit Boards
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gGeneralThe scanner is located in the lower half of the system cabinet. Capacity is 67 circuit boards and the motherboard.
Transducers connect to the motherboard via the TDI board at the front of the system. Though there are twotransducer connection ports, only one can be active at a time. Communication between scanner and scanconverter is handled by the DBR board via a dual port RAM. Signal from the scanner to the Scan Converter passesthrough the DBL board.
Scanner operation is controlled by the SCP board. SCP is synchronized by the 10 MHz master clock located on theSTG Board.
Scanner sequence of operation is made up of three processes:
• Scanner Set-Up
• Transmission
• Reception
Scanner Set-UpThis sequence determines the type and number of lines to be fired by the transducer (based on control and gainsettings on the front panel) and passed to the scanner by the scan converter. Beamforming data is acquired fromthe DCC boards via the B, C, and D buses.
At the conclusion of this sequence, the transmission cycle begins.
TransmissionThe SCP board signal causes the XDY board to output the phased transmit pulse to the transmitter boards. The-high energy pulse required to drive the elements and produce an ultrasound wave on the probe face is then sent bythe XMT board.
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gReceptionThe return echo signals from the transducer pass through the TDI board and scanner motherboard (SMB) to thereceiver (RCV) boards.
The receivers amplify and convert these low level signals to an intermediate frequency (IF), using the added signalsfrom the mixer clock (MXK) boards. Receiver board gain is controlled by a signal from the APD and IGD boards,which also compensate for signal loss (due to depth) and adjust the aperture of the array. The receivers output theIF signal to the SDL boards for summing.
Signals then pass to the DBL board to produce the IF SUM signal. The IF SUM signal is sent to thevideo detector (VDT) board where it is converted to an ultrasound video signal, amplified, and processed. Thesignal then returns to the DBL board for buffering. Finally, it is sent to the scan converter.
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gSelect a Scan Converter Theory topic:System Overview
Operating Sequence
Primary Circuit Boards
Spectral Doppler Circuit Boards
Color Doppler Circuit Boards
Operating Modes
Scan Converter Circuit Boards
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gSystem OverviewThe Acuson 128 XP10 ART Ultrasound System primary control center is the upper card cage assembly,commonly called the Scan Converter. The primary function of the Scan Converter is to interface the variousscanning formats with the video raster output display formats.
Output display formats include:
Display Type Probe TypeFlat linear display Flat Linear ProbeCurve at skin line corresponding to probe face curve Curved Linear Array ProbeSector display, shaped like an inverted V with the skin line at the top Sector ProbeSector display, with flat skin line at the top Vector Probe
Note None of these display types are related to video raster format.
Other Scan Converter control and display functions:
• Power-up and runtime diagnostics
• Digitization of detected analog ultrasound RF data
• Digital image storage and processing
• Construction and control of alphanumeric/graphic overlays
• Scan conversion of ultrasound RF data to video raster format
• Conversion of outputs to NTSC standard video formats
• Operator interface
• Input/output display device control
• Spectral and color Doppler processing
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gOperating SequenceThe scan converter receives analog ultrasound beam data one line at a time from the scanner. Each line isdigitized, sampled, converted to pixel format and stored in the digital image memory. The data stored in the imagememory is read out, synchronized to the video display rate, converted to a composite video signal, mixed with theoverlay graphics, and delivered to the various output display devices.
Primary Circuit BoardsEach scan converter function is controlled by a printed circuit board inside the scan converter.
Board Name Abbreviation FunctionsInput Controller IC • Line Digitization
• Sample to Pixel ConversionCine Memory Board CMB Digital storage and playback functions for frame and scroll memories
Output Controller OC • Video Raster Generation• Readout control for CMB• Master microprocessor with primary control over system operation• Diagnostics
Common Video Controller CVC • Mixes ultrasound data and graphic overlays• Video raster format generation• Time and Date and battery backed NVRAM
Front Panel Controller FPC Operator interface to systemCommon System
Interconnect*CSI • Keyboard
• Front panel• Peripheral input/output
*located in the back of the Scan Converter
The scan converter also controls:
• Spectral Doppler Processing and Display
• Color Doppler Processing and Display
These subsystems run on their own sets of circuit boards.
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gSpectral Doppler Circuit Boards
Board Name Abbreviation FunctionsInput Controller IC • Line Digitization
• Sample to Pixel ConversionDoppler Acquisition DAQ Digitizes the I and Q Doppler signals generated by the scanner
Doppler Spectral Processor DSP Performs Time to Frequency conversion as in an the FFT processDisplay Control Processor DCP Generates the special graphics used to display spectral information
Audio Processor AUD Generates the Audio signals from the Doppler spectral data
Color Doppler Circuit BoardsBoard Name Abbreviation Functions
Flow Estimator Calculator FEC Calculates flow velocity for each color pixelFlow Estimator Buffer FEB Stores the color flow in color flow memoryColor Scan Converter CSC Performs conversion of color flow memory data to video raster format
Color Encoder/Decoder CED Performs RGB conversion for the color signals generated by the ColorDoppler Module
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gOperating Modes
2D Grayscale OperationThe scanner sends an ultrasound line (and line identifier) to the scan converter. The line goes to the Input Controller(IC) for initial processing, where it is digitized and sampled. Sampling rate depends upon operator settings, such asfield of view and magnification mode (RES). The data samples are sent through the IC for addressing, then to theCMB (under control of the Output Controller, OC) for storage in, and readout from, digital memory.
The CMB also handles grayscale processing (post-processing), temporal persistence, and buffer and storagefunctions. Buffering allows for synchronizing readout with the OC video raster scanning rate.
Digital data is read from CMB digital memory to the CVC. Here, digital data is converted to an analog signal,suitable for mixing with CVC overlay and graphics information. The combined data is synchronized to the videoraster rate and output to the CSI for distribution to viewing monitors, peripheral displays and recording devices.
Spectral Doppler OperationMost processing in this mode is done by the four boards dedicated to spectral and audio processing; DAQ, DSP,DCP and AUD.
The DAQ receives the Doppler line data and line identifier signals from the scanner. The line data is made up ofBBQ-generated I and Q quadrature analog ultrasound data. The control signals specify the line type as Doppler(instead of grayscale). The DAQ digitizes the I and Q signals and passes data to the DSP through the connectingribbon cables.
The DSP converts the Doppler signal from the time domain to the frequency domain. This allows for display thefrequency spectrum of the detected Doppler signal.
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gSelect a Power Supply Theory topic:
System Overview
Isolation Transformer
Power-Up Sequence
Soft Start Circuitry
Power-Down Sequence
Power Supply Test Points
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gSystem OverviewThe scanner power supply is inside the power supply drawer, between the wheels. Access can be gained from therear by removing the filters, cabling, and screws, then sliding it out on rails.
The power supply drawer contains four main sections. One section is a 300VDC coarse supply or HV bus. Thevoltage comes from the 340VAC step-up isolation transformer (T1) secondary winding. A bridge rectifier full waverectifies the voltage to 300VDC. It is filtered by a large inductor (L2) and capacitor (C3), and applied toPower Distribution Board 2 (PDB2).
This DC voltage powers the other three sections of the power supply drawer, each containing a switching regulator(DC-to-DC converter).
A fourth power supply is under the scan converter card cage. It is also a switching regulator, using the HV bus asa course supply.
The 340VAC isolation transformer also supplies 115VAC to all four switching power supplies, providinghousekeeping and control functions.
Synchronization for the four power supplies is provided by the clock signal (PERCLK), generated by theScan Control Processor (SCP) board in the scanner card cage. This signal is processed and distributed by PDB2.
PDB2 acts as the power supply control center. If an unusual demand is placed on any of the supplies, PDB2 shutsdown the system and displays an error code on the numeric LED. See Error Codes for more information.
Component Location Fuses OtherPDB2 power supply drawer F1, F2Programmable Power Supply power supply drawer F1, F2Scanner Analog Power Supply power supply drawer F1 Neon bulbs light to indicate
overcurrent conditionDigital Power Supply system left side, behind cover
panel and black dress panelF26
Scan Converter Power Supply beneath scan converterchassis
F21, F22, F23, F24, F25 Neon bulbs light to indicate supplyfailure
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gIsolation TransformerThe Isolation Transformer provides three AC supplies to the system.
Winding Voltage Power is…First 175VAC Sent to Programmable Power Supply
Second 115VAC Used for control and power switching of:• Scanner Analog Supply• Scanner Digital Power Supply• Scan Converter Power Supply
Third 340VAC Rectified and supplied to:• Scanner Analog Supply• Scanner Digital Supply• Scan Converter Power Supply
These three supplies use 300VDC as both operating supply voltage and system supply voltage source.
A 0.5 A fuse protects the rectified and filtered 300VDC. It also protects a 150 Ohm bus load resistor, which protectsPDB2 from power surges at power-up. The resistor is on top of PDB2.
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gPower-Up SequenceWhen the power switch is activated, PDB2 verifies:
• fans are active
• external AC is at least 95VAC
• temperature-sensing resistor is below 69°CIf these conditions are met, the Soft Start circuitry is energized.
AC is applied to the Isolation Transformer. AC input is conditioned by an electromagnetic inductance filter and a47 kOhm bleeder resistor (bleeds filter capacitor charge when system is unplugged from AC outlet).
A 12.5 Amp circuit breaker provides overcurrent protection.
PDB2 initializes at 450 milliseconds. This pulse times the rise of the 300VDC. If 300VDC does not reach 250VDC inthis time, the power supply shuts down on an error. The trailing edge of the pulse checks the 18VDC level from theScan Converter Power Supply. If this voltage is low or not present, the power supply shuts down on an error.
Continued on next page…
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gPower-Up Sequence (continued)Next, the scanner digital power supply activates and STG outputs PERCLK signal. This signal times the switchingfrequencies of the 3 power supplies (scanner analog, scanner digital, and scan converter).
When all these conditions are met:
• the “Power Fail” signal goes high, signifying OK condition
• the yellow CLK LED on PDB2 turns on
• the Programmable Power Supply activates
• the 3 power supplies synchronize
• the 150 Ohm bus load resistor is switched out of the supply line
• the normal system load takes over
• the Programmable Power Supply is tested to verifying whether it can adjust voltage levels for systemoperation
The power-up sequence is complete.
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gSoft Start CircuitrySoft start circuitry includes:
• soft start relay
• 30 Ohm 50 Watt resistor
• 5 Amp slow blow fuse
When the soft start relay is activated, the resistor and fuse (in series on isolation transformer input side) providePDB2 with surge protection at power-up. After the soft start relay switches main power into the isolation transformer,they are switched out. When the Soft Start Relay is activated, supply voltages are fed to the PDB2 circuit board.
Failure of resistor or fuse creates error #2 on the numeric LED.
Power-Down SequenceWhen the system powers down:
• the “Power Fail” signal goes low; the system backs up necessary data to the battery-backed RAM
• the +5VDC is held high for at least one second
• the Soft Start Assembly main power relay opens
• the 150 Ohm bus load resistor switches to discharge the 300VDC lines
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gPower Supply Test PointsMeasure power supply voltages on DBL board. Toaccess, remove the left side cover. Check voltageson Molex connectors J5, J6, and J7.
* 30V – 150V
Additional DBL test points are accessible with thescanner section open and the top cover removed.Look at the top inside edge of DBL.
Test Point VoltageTP5 +150V+/- 5VTP6 -7.5V +/- 0.3VTP7 +7.5V +/- 0.3VTP8 +5V +/- 0.10VTP9 +15V +/- 0.5VTP10 -15V +/- 0.5V
Additional power supply test points are on Molex connectorJ32 on the scan converter motherboard, shown above.
J5 J6 J7
-15V
-7.5V +7.5V
+15V
+5V
+5VS
VXMIT*
J5 J6 J7
-15V
-7.5V +7.5V
+15V
+5V
+5VS
VXMIT*
J32
+12V
+5V
-12V
PF+5V OK
J5 J6 J7
-15V
-7.5V +7.5V
+15V
+5V
+5VS
VXMIT*
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gSelect a Circuit Board Theory Topic:
Scanner Circuit BoardsAPD (Apodizer) board
AUX CW (Auxiliary Continuous Wave Doppler) board
BBQ (Base Band Quadrature) board
DBL (Distribution Board Left) board
DBR (Distribution Board Right) board
DCC (Dual Channel Controller) board
IFD (Intermediate Frequency Detector) board
IGD (Interpolated Gain Detector) board
MEX (Memory Expansion) board
MXK (Mixer Clock) board
RCV (Receiver) board
SCP (Scan Control Processor) board
SDL (Summing Delay Line) board
SMB (Scanner Motherboard) board
STG (Scanner Timing Generator) board
TDI (Transducer Interconnect) board
TRM (Terminator) board
VDT (Video Detector) board
XDY (Transmit Delay) board
XMT (Transmitter) board
Click here for a menu of Scan Converter Circuit Boards
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gSelect a Circuit Board Theory Topic:
Scan Converter Circuit BoardsAUD (Audio Processor) board
CED (Color Encoder Decoder) board
CMB (Cine Memory Board) board
CSC (Color Scan Converter) board
CSI (Common System Interconnect) board
CVC (Common Video Controller) board
DAQ (Doppler Acquisition) board
DCP (Display Control Processor) board
DSP (Doppler Spectral Processor) board
FEB (Flow Estimator Buffer) board
FEC (Flow Estimator Calculator) board
FPC (Front Panel Controller) board
IC (Input Controller) board
MMB (Main Memory) board
OC (Output Controller) board
PEM (PROM Expansion Module) board
SCM (Strip Chart / M-mode) board
SCMB (Scan Converter Motherboard) board
Click here for a menu of Scanner Circuit Boards
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gScanner Circuit Boards
APD (Apodizer) Board• Used during transmit and receive cycles
• Dynamically adjusts the transducer aperture to reduce the ultrasound beam side lobes
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
AUX CW (Auxiliary Continuous Wave Doppler) Board• Acts as single front end board
• Transmits and receives for the CW Pencil probes
• Used during production of steerable CW:
• Generates CW carrier signal
• Provides some filtering to remove fixed target clutter
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
BBQ (Baseband Quadrature) Board• Detects Doppler
• Produces I and Q quadrature signals for scan converter Spectral Doppler and Color Doppler functions
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
DBL (Distribution Board Left) Board• Sums SDL signal outputs
• Feeds through to IFD for IF detection
• Feeds through for ultrasound video and I & Q signals from the VDT and BBQ
• Contains test points for scanner power supplies and PPS output
• Feeds through for power supplies supporting the scanner
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
DBR (Distribution Board Right) Board• Contains dual port RAM; the I/O route for communications between scanner and scan converter
• Configures the Programmable Power Supply for selected probe and function
• Two boards in the system provide four control buses for the scanner
• Provide temporary storage and high-speed transfer of all active scan parameters
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
DCC (Dual Channel Controller) BoardThere are two DCC boards in the scanner section. They serve as the pathway for high-speed transfer of the controlsignals which set up the operation of:
• Beamformer
• Beamformer driver
• Ultrasound video gain processing
The DCC nearest the DBR board controls signal flow on the A bus and B bus. The other DCC controls signal flowon the C bus and D bus.
The relevant microcode data from the MEX boards are loaded into the DCC memories through the SCP board. Asthe system cycles through the four primary scan states, the appropriate control signals are output on the buses todirect scanner operation.
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
IFD (Intermediate Frequency Detector) board• Supports Acoustic Response Technology (ART) hardware upgrade (second only to VDT3)
• Expands scanner intermediate frequency detector circuitry bandwidth to provide enhanced sensitivity andresolution
• Provides swept frequency function to optimize system imaging, with higher frequencies in near field and lowerfrequencies in far field
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
IGD (Interpolating Gain Driver) Board• Generates scanner gain control
• Develops:
• Master gain and DGC gain to receivers
• Transmit power for transmitters
• Video gain to BBQ and VDT
• Contains TEE probe thermal sense circuitry
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
MEX (Memory Expansion) Board• Up to three MEX boards in the scanner
• Contains programmed microcode for each transducer’s modes of operation
• Sends microcode to DCC boards (under control of Scan Converter OC) on transducer initialization
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
MXK (Mixer Clock) Board• Derives intermediate frequencies from returning ultrasound RF data
Note Specific frequencies are determined by the scan set-up parameters sent from the MEX boards.
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
RCV (Receiver) Board• Receives returning ultrasound RF
• Applies master gain and DGC gain
• Heterodynes initial intermediate frequency
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
SCP (Scanner Control Processor) Board• Handles primary scanner control
• Uses dual port RAM for scanner set-up by the computer
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
SDL (Summing Delay Line) Board• Provides receive delays to returning echoes for receive focus
• Sums two lines of receive data to one line
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
SMB (Scanner Motherboard) board• Interconnects all scanner boards
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
STG (Scanner Timing Generator) Board• Sets up transmit and receive focus timing for beam formation (under control of Main Processor and SCP)
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
TDI (Transducer Interconnect) Board• Provides physical connection with transducer
Note There is one active connector and options for another.
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
TRM (Terminator) Board• Provides active termination for B and C buses
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
VDT (Video Detector) Board• Processes summed IF ultrasound signal from DBL
• Applies master gain and DGC gain
• Handles signal compression and amplification before digitization at Scan Converter
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gScanner Circuit Boards (continued)
XDY (Transmit Delay) Board• Provides timing signals to transmitter for transmit focus and beam steering
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
XMT (Transmitter) Board• Produces transmit signal to drives transducer elements
Note This is a variable voltage pulse (-30V to -150V), depending on programmed scan parameters.
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gScan Converter Circuit Boards
AUD (Audio Processor) Board• Receives I and Q analog Doppler signals
• Converts I and Q analog signals to digital
• Generates stereo audio signals sent to speakers
• Provides audio for recording devices
• Under control of OC, routes signals to peripheral devices specified by operator
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
CED (Color Encoder Decoder) Board• Accepts RGB video from CVC
• Converts RGB video to component video or composite video, as needed by peripheral video devices (NTSCor PAL format)
• Converts composite video or component video (from VCR in playback mode) to RGB video format for displaymonitor (NTSC or PAL format)
• Provides buffers and output drivers for peripheral support
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
CMB (Cine Memory Board) Board• Acts as digital storage memory for scan converter
• Buffers digital data
• Synchronizes ultrasound memory write with video raster memory read
• Performs coordinate data transformation from rectangular memory to polar/linear monitor displays
• Performs grayscale post-processing
• Performs temporal persistence processing
• Stores sequential video frames or grayscale m-mode strip data for operator playback/review
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
CSC (Color Scan Converter) Board• One of three boards which exclusively process color Doppler signals
• Converts/ synchronizes color Doppler data from ultrasound acquisition format/timing to display device videoformat/timing
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gScan Converter Circuit Boards (continued)
CSI (Common System Interconnect) Board• Interfaces FPC with system
• Interfaces signal and control lines between scanner and scan converter
• Interfaces system peripherals (keyboard, etc.) and remote control lines to the peripherals
• Many peripheral control and display operation problems can be caused by this board
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
CVC (Common Video Controller) Board• Generates alphanumeric and image graphic overlays (DGC curves, etc.)
• Mixes overlays with image data (color and grayscale)
• Converts digital image bus data to video signals
• Performs digital-to-analog conversion of ultrasound video signals
• Provides date and time clock
• NVRAM has battery backup
• Contains operating system software on PROM sockets
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
DAQ (Doppler Acquisition) Board• Converts I and Q signals generated by the scanner from analog to digital
• Sends digital data to DSP for spectral processing and FEC for color Doppler processing
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gScan Converter Circuit Boards (continued)
DCP (Display Control Processor) Board• Controls many display functions in color and spectral modes
• Involved in data transfer between IC and DSP
• Regulates display processes of spectral, 2D, M-Mode and physiological trace data during transfer to CMB
• Generates timing signal to initialize m-mode data transfer from IC
• Generates timing signals to initialize transfer spectral data from DSP
• Generates scrolling display for m-mode and spectral data
• Controls transfer and placement of physio, Doppler and m-mode data on monitor
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
DSP (Doppler Spectral Processor) Board• Extracts frequency information from digital Doppler data input sent from DAQ, transforms it from time domain
to frequency domain
• Passes this data to IC for processing (in the same way as the grayscale 2D ultrasound data)
• Generates signals sent to AUD for processing, D to A conversion, and output to speakers
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
FEB (Flow Estimator Buffer) Board• Used only by color Doppler circuitry
• Receives FEC input
• Extracts variance and velocity data from FEC input
• Performs spatial persistence, maintaining the color volume information to enhance the color display
• Acts as a storage buffer to provide acquired frames to the Strip Cine function
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
FEC (Flow Estimator Calculator) Board• Used exclusively by color Doppler circuitry
• Accepts digitized data from DAQ
• Performs initial conversion of I and Q signals to velocity and variance
• Sends velocity and variance signals to FEB
• Calculates the color ROI box area and location by converting the data within the ROI
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
FPC (Front Panel Controller) Board• Monitors all operator controls for changes in status as the operator uses the controls
• Sends control signals to OC (through CSI) for interpretation and execution when the user changes any buttonor switch
• Reads the ID Code for the AUX CW probe
• Monitors thermistors on thermally sensitive probes (if system is so equipped)
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
IC (Input Controller) Board• Receives analog video signal from scanner
• Digitizes data through two high speed buffers
• Coordinates with the scanner (through handshaking protocols) line synchronization for address generation
• Performs coordinate transformation of data from the transducer format (linear, vector, or sector format) toX-Y format used by MMB
• Sends signal to MMB
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gScan Converter Circuit Boards (continued)
MMB (Main Memory) Board• Stores digital ultrasound video in RAM
• Provides storage while adjusting timing between ultrasound acquisition rate (at front end) and the monitorraster display timing (at scan converter end) to set up video for monitor viewing
• Contains the Persistence function circuitry
• Contains the grayscale post-processing maps and circuitry
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
OC (Output Controller) Board• Controls scan converter operation via on-board microprocessor
• Controls readout of digitized ultrasound data from MMB
• Contains the operating system (Syscon verXXX) for the entire ultrasound system
• Contains the Master Clock circuitry for controlling system timing
• Contains the video filter which processes the grayscale data for final monitor display
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
PEM (PROM Expansion Module) Board• Holds PROM software
Note This board is used only on black-and-white systems.
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
SCM (Strip Chart / M-mode) Board• Controls interface to strip chart recorder
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
SCMB (Scan Converter Motherboard) Board• Interconnects all scan converter boards
• Contains all data and control buses which drive scan converter operation
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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g
Troubleshooting / Diagnostics
Select a Troubleshooting / Diagnostics topic:
ScannerPower-Up Diagnostics
Performance Problems
Printed Circuit Boards
Scan ConverterPower-Up Diagnostics
Performance Problems
Printed Circuit Boards
Power SuppliesTroubleshooting
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gScanner
Power-up diagnosticsAt system power-up, the system runs a series of self-tests. If any self-test fails, the system generates a list of errorcodes by subassembly.
Note Tests vary by software level. Revision 27.x and above is currently the most common, due to the Y2Kupgrades.
Note A long list of error codes often indicates power supply problem.
See Error Codes for a list of error codes and related subassemblies.
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gScanner (continued)
Performance Problems
ProblemType
Symptoms Common Causes
Poor grayscale • Transducer• Receiver• Transmitters• Power Supplies• Monitor Adjustments• Operator Set-ups• Presets
2-D Image
Artifacts in theimage area
• See 2-D FunctionDiagram. Follow the signalpath and use thetroubleshooting guide foreach circuit board.
• Power suppliesSpectralDoppler
• Noise
• Weak signal
• Artifacts
• See Doppler FunctionDiagram. Check audio andcolor Doppler.
• IGD
• BBQ
• DAQ
• DSP
• DCP
• Transducer
• Power supplies
ProblemType
Symptoms Common Causes
• Poor color
• Noise
• Poorsensitivity
• See Color DopplerFunction Diagram
• Transducer
• Power supplies
• IGD
• BBQ
• DAQ
• FEC
• FEB
• CSC
• CVC
ColorDoppler
Wrong color Scan converter PCBs
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gScanner Circuit Boards
Select a Scanner Circuit Board:APD (Apodizer) board
AUX CW (Auxiliary Continuous Wave Doppler) board
BBQ (Base Band Quadrature) board
DBL (Distribution Board Left) board
DBR (Distribution Board Right) board
DCC (Dual Channel Controller) board
IFD (Intermediate Frequency Detector) board
IGD (Interpolated Gain Detector) board
MEX (Memory Expansion) board
MXK (Mixer Clock) board
RCV (Receiver) board
SCP (Scan Control Processor) board
SDL (Summing Delay Line) board
SMB (Scanner Motherboard) board
STG (Scanner Timing Generator) board
TDI (Transducer Interconnect) board
TRM (Terminator) board
VDT (Video Detector) board
XDY (Transmit Delay) board
XMT (Transmitter) board
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gScanner Circuit Boards (continued)
APD (Apodizer) BoardAPD failure is hard to detect. Look for full gain at the receiver and a slight image distortion.
Note The 4 APD boards are interchangeable. Swap to verify the fault.
Check test points on all four boards and look for a difference. If all four boards are incorrect, the problem could bethe IGD.
Test Point Correct ReadingTP0 CommonTP1 VA REF +5.2 VDC Level ripple 0.1VTP2 VA BIAS -1.7 VDC Level
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gScanner Circuit Boards (continued)
AUX CW (Auxiliary Continuous Wave Doppler) BoardCommon AUX CW problems:
• No signal
• Sidebanding (horizontal line in spectral and continuous audio tone)
• Mirror image in the spectral image when in Continuous Wave Doppler
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gScanner Circuit Boards (continued)
BBQ (Baseband Quadrature) BoardBBQ board generates I and Q signals.
Common BBQ problems:
• No signal
• Sidebanding (horizontal line in spectral and continuous audio tone)
• Noise
• Mirror image
• Weak signal
Noise affects the Doppler modes differently.
Type SensitivityCW Doppler Most sensitivePW Doppler Moderately sensitiveColor Doppler Least sensitive
Test all three modes.
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gScanner Circuit Boards (continued)
DBL (Distribution Board Left) BoardDBL has few common problems.
Power supply connector can affect power supply voltages (check at the power supply to verify)
Dropouts similar to a bad SDL.
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gScanner Circuit Boards (continued)
DBR (Distribution Board Right) BoardDBR has three D-type connectors on the side. These can cause intermittent communication path problems fromscanner to scan converter.
Note The dual port RAM is checked at power-up/ reset.Common error message: DBR POWER UP ERROR.
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gScanner Circuit Boards (continued)
DCC (Dual Channel Controller) BoardDCC is checked at power-up/ reset.
Common error message: DCC POWER UP ERROR.
Note The two DCC boards are interchangeable. Swap to verify the fault.
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gScanner Circuit Boards (continued)
IFD (Intermediate Frequency Detector) boardFailures are generally associated with overall poor image display as opposed to line.
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gScanner Circuit Boards (continued)
IGD (Interpolating Gain Driver) BoardIGD has five A to D converters.
IGD problems can affect:
• Receiver Gain
• Receiver Bias
• Transmit Power
• Video Gain
• Apodizer Bias
IGD test points:
Test Point Correct ReadingTP0 CommonTP1 V BiasTP2 VA Bias -1.6VDC +.15VTP3 V GainTP4 Video GainTP5 VT-on-board DAC compensation
approximately 10.3VDCTP6 VA REFTP7 not usedTP8 not usedTP9 VXMIT Bias
TP10 VR-DAC reference voltage10VDC+.1V
Scanner Circuit Boards Menu Scan Converter Circuit Boards Menu
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gScanner Circuit Boards (continued)
MEX (Memory Expansion) BoardThe three MEX boards are checked at power-up/reset.
Common error message: MEX[1,2,3] POWER ERROR.
Note Each MEX board has its own software, so they are NOT interchangeable. When replacing a MEX board,move the software onto the new board.
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gScanner Circuit Boards (continued)
MXK (Mixer Clock) BoardEach MXK controls four RCV boards.
Common problem: large image dropout area. Troubleshoot with a linear or curved linear probe.
Note MXK boards are interchangeable. Swap to verify the fault.
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gScanner Circuit Boards (continued)
RCV (Receiver) BoardRCV board problems result in image dropouts and noise.
For vertical lines/dropout, swap RCV boards to verify and isolate the fault.
For horizontal lines/dropout (caused by MXK failure) remove RCV boards one at a time to verify and isolate thefault.
Note RCV boards are interchangeable. Swap to verify the fault.
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gScanner Circuit Boards (continued)
SCP (Scanner Control Processor) BoardSCP is checked at power-up/reset.
Common error messages:
• SCP POWER UP ERROR
• SYSTEM INTERRUPT POWER UP ERROR.
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gScanner Circuit Boards (continued)
SDL (Summing Delay Line) BoardCommon problem (with a linear probe): artifact (missing information) vertically down the image.
Isolate problem board by moving to a different card cage slot.
Verify:
Test Point Correct ReadingTP1 +5.00VTP2 -5.00V
If voltages are +/- 0.10V, replace the board.
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gScanner Circuit Boards (continued)
SMB (Scanner Motherboard) boardSMB may cause many problems.
Rule out other causes first, then replace SMB.
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gScanner Circuit Boards (continued)
STG (Scanner Timing Generator) BoardProgrammable timing generator on STG generates:
• Start of Line signal
• Start of Transmit signal
• Virtual Start of Transmit signal
• Virtual Start of Receive signal
STG is checked at power-up/ reset.
Common error message: SCANNER TIMING GENERATOR PROBLEM.
System will not boot.
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gScanner Circuit Boards (continued)
TDI (Transducer Interconnect) BoardTDI problems cause image dropout, similar to a bad receiver with a corresponding bad transmitter.
Check the DL connector. If the system does not recognize a transducer, TDI may be bad.
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gScanner Circuit Boards (continued)
TRM (Terminator) BoardTRM has few active components and rarely fails. Failure may resemble a bus problem.
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gScanner Circuit Boards (continued)
VDT (Video Detector) BoardCommon problems:
• No image
• Low gain
• Noisy image
Confirm proper power supply levels. If problem persists, replace VDT.
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gScanner Circuit Boards (continued)
XDY (Transmit Delay) BoardXDY problem resembles an XMT problem.
Activate a linear transducer and swap XMT boards. If top of image dropout persists, replace XDY board.
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gScanner Circuit Boards (continued)
XMT (Transmitter) BoardXMT problems cause top of image dropout.
Note The 8 XMT boards are interchangeable. Swap to verify the fault. If problem persists, check XDY board.
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gScan Converter
Power-up diagnosticsAt system power-up, the system runs a series of self-tests. If any self-test fails, the system generates a list of errorcodes by subassembly.
Note Tests vary by software level.Revision 27.x and above is currently the most common, due to Y2K upgrades.
Note A long list of error codes often indicates power supply problem.
See Error Codes for a list of error codes and related subassemblies.
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gScan Converter (continued)
Performance Problems
ProblemType
Symptoms Common Causes
Poor grayscale • IC
• MMB
• CVC
• CED
• OC
• Power supplies
• Monitor adjustments
• Operator set-ups
• Presets
2-D Image
Artifacts in theimage area
• See Scan Converter 2-DImage Path FunctionDiagram. Follow the signalpath and use thetroubleshooting guide foreach circuit board.
• Power supplies
ProblemType
Symptoms Common Causes
SpectralDoppler
• Noise
• Weak signal
• Artifacts
• See Doppler FunctionDiagram. Check audioand color Doppler.
• IGD
• BBQ
• DAQ
• DSP
• DCP
• Transducer
• Power supplies
• Poor color
• Noise
• Poorsensitivity
• See Color DopplerFunction Diagram
• Transducer
• Power supplies
• IGD
• BBQ
• DAQ
• FEC
• FEB
• CSC
• CVC
ColorDoppler
Wrong color Scan converter PCBs
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gScan Converter Circuit Boards
Select a Scan Converter Circuit Board:AUD (Audio Processor) board
CED (Color Encoder Decoder) board
CMB (Cine Memory Board) board
CSC (Color Scan Converter) board
CSI (Common System Interconnect) board
CVC (Common Video Controller) board
DAQ (Doppler Acquisition) board
DCP (Display Control Processor) board
DSP (Doppler Spectral Processor) board
FEB (Flow Estimator Buffer) board
FEC (Flow Estimator Calculator) board
FPC (Front Panel Controller) board
IC (Input Controller) board
MMB (Main Memory) board
OC (Output Controller) board
PEM (PROM Expansion Module) board
SCM (Strip Chart / M-mode) board
SCMB (Scan Converter Motherboard) board
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gScan Converter Circuit Boards (continued)
AUD (Audio Processor) BoardAUD problems are associated with audio failure in either real-time or playback modes.
If Doppler audio is missing or distorted, check spectral Doppler display to verify proper DSP operation beforesuspecting an AUD board problem.
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
CED (Color Encoder Decoder) BoardCED is in the primary video signal chain. Any video signal problem at the monitor or peripheral devices can becaused by the CED.
Failures often appear as:
• color distortion on the display monitor
• color and video distortion from the VCR during playback
• no video to the display monitor
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
CMB (Cine Memory Board) BoardCMB is tested extensively by power-up diagnostics. If any error is indicated on this board, replace the board.
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
CSC (Color Scan Converter) BoardAny problem related specifically to color can be caused by this board.
CSC is tested extensively by power up diagnostics. If any error is indicated on this board, replace the board.
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
CSI (Common System Interconnect) BoardCSI is tested extensively by power-up diagnostics. If any error is indicated on this board, replace the board.
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gScan Converter Circuit Boards (continued)
CVC (Common Video Controller) BoardCVC is tested extensively by power-up diagnostics. If any error is indicated on this board, replace the board.
Note It is not necessary to remove the board to check the batteries.Allow the board to rest on ejection tabs and check from back side of board.
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
DAQ (Doppler Acquisition) BoardThe DAQ is the source of both spectral Doppler and color Doppler data. Any problems with color, spectral or audiofunctions could indicate a failure of this board.
DAQ is tested extensively by power-up diagnostics. If any error is indicated on this board, replace the board.
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gScan Converter Circuit Boards (continued)
DCP (Display Control Processor) BoardDCP is tested extensively by power-up diagnostics. If any error is indicated on this board, replace the board.
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gScan Converter Circuit Boards (continued)
DSP (Doppler Spectral Processor) BoardDSP failure causes problems in spectral and/or audio, but not in color Doppler. Use the functional block diagrams toeliminate other causes.
DSP is tested extensively by power-up diagnostics. If any error is indicated on this board, replace the board.
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
FEB (Flow Estimator Buffer) BoardProblems associated only with the color Doppler mode could be caused by the FEC.
FEB is tested extensively by power-up diagnostics. If any error is indicated on this board, replace the board.
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
FEC (Flow Estimator Calculator) BoardOn-board diagnostics run at power-up, testing the color Doppler section of the system, including FEB and CSC.
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gScan Converter Circuit Boards (continued)
FPC (Front Panel Controller) BoardFPC is tested extensively by power-up diagnostics. If any error is indicated on this board, replace the board.
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
IC (Input Controller) BoardIC is tested extensively by power-up diagnostics. If any error is indicated on this board, replace the board.
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
MMB (Main Memory) BoardMMB is tested extensively by power-up diagnostics. If any error is indicated on this board, replace the board.
Scan Converter Circuit Boards Menu Scanner Circuit Boards Menu
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gScan Converter Circuit Boards (continued)
OC (Output Controller) BoardOC is tested extensively by power-up diagnostics. If any error is indicated on this board, replace the board.
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gScan Converter Circuit Boards (continued)
PEM (PROM Expansion Module) BoardThe PEM board fails very rarely. A PEM failure appears as an error at power-up.
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gScan Converter Circuit Boards (continued)
SCM (Strip Chart / M-mode) BoardProblems with Strip Chart control and display will result from failures in the SCM, indicating board replacement.
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gScan Converter Circuit Boards (continued)
SCMB (Scan Converter Motherboard) BoardTroubleshooting this board is a complex operation. Replacement is indicated only if all other possible failures havebeen ruled out.
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gPower Supplies
GeneralA common indicator of a general power supply failure is a long string of power-up error codes.
Another indicator is an error code readout on the numeric LED in the power supply drawer.
Note If the numeric LED indicates a failure, there are usually other symptoms that indicate another problem,such as total system power-up failure.
Troubleshooting1) Find and measure the system output voltages. Begin by measuring the AC line voltage to ensure that the
system is receiving the proper power.
2) Examine and measure resistance of the power cord.
3) Check fuses in the power supply drawer. (See Theory of Operation for details.) Replace fuses as necessary.
4) Examine the power supply drawer. Under normal operating conditions, the drawer has only one activelyglowing LED: the PERCLK LED on the PDB2 board. Any other LED or lamp active indicates a failure.
5) Remove the load from the suspect power supply and test it again.
• If it functions, try sequentially loading the supply to determine which load is causing it to fail.
• If it does not function, replace it.
Continued on next page…
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gPower Supplies (continued)
Troubleshooting (continued)Use this table of resistance measurements when checking the power supply load.
Note Measure resistance with the power to the scanner removed.
Take the resistance measurements between the Molex connectors on the DBL and the chassis ground.
Power SupplyLocation
PowerSupply
Typical Load128XP10
VXMIT 39.1 kOhms-15V 291 Ohms+15V 207 Ohms-7.5V 136 Ohms+7.5V 202 Ohms
Scanner
+5V 2.2 Ohms-12V 372 Ohms+12V 13.3 Ohms
Scan Converter
+5V 2.8 Ohms
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g
How to Use this Tool
Select a topic:Quick Acrobat Reader 4.0 Controls
Linking and Navigation
Adding Personal Notes
Printing
About This EPST
Credits
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gQuick Acrobat Reader 4.0 ControlsAcrobat Reader 4.0 can be installed from the CD that holds this EPST. Just find the 5 MB executable file on the CDand double-click it.
Here are some shortcut keystrokes that work with Acrobat Reader 4.0:
• <HOME> takes you to the first page of the PDF file.
• <PAGE UP>, <PAGE DOWN> and <END> work as titled.
• <CTRL> <←> takes you back to the previous display.
• <CTRL> <N> enables you to select a specific page number.
• <F5> toggles the Bookmark display. Click on a Bookmark to go there.
• <F6> toggles the Thumbnail display.
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gLinking and NavigationOn the bottom of every page, you will find a linking tool bar. Click on the section’s icon to take you to that section.
In addition to the linking tool bar on each page, you will find other links throughout the EPST.
Convention Link
Blue text Takes you to supplemental information about that topic.
See Logic Diagram XXTakes you to the specified logic/block diagram.
ALinks to another area on the same logic/block diagram.
Note Not all of these have an active link; they are linked only when you needinformation that you cannot see on a particular part of a diagram.
For additional navigation options, you may use the Acrobat Reader bookmark feature.
To display bookmarks:
1) Press <F5> or click on the PageWithLeftMargin button on the Acrobat toolbar to open the Bookmark window.
2) Click on the section or page listed in the Bookmark window that you wish to view.
3) Press <F5> or click on the PageWithLeftMargin button to close the Bookmark window.
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gAdding Your Personal NotesTo add your personal notes:
1) Click on the Notes icon.
2) Notepad will open a text file. The text file name corresponds with the page number of the EPST.
3) Type your Notes as you’d like.
4) When you’re finished making your Notes for the page, save the file and close Notepad.
5) To access your Notes, simply return to the EPST page to which your notes correspond and click on the Notesicon at the bottom of the page. For example, if you made notes while on page 37, return to that page. Click theNotes icon to retrieve your page 37 Notes.
Note The setup program will create a text file for every page of this tool for your notes. The directory is:c:/docs/fc5001/persnote
Warning Personal Notes will not work if you move these files; the path is hard-coded into the EPST.Personal Notes may not work when the computer is networked.
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gPrinting1) On the Acrobat toolbar, select File, Print.
2) Select whether to print all pages, only the current page, or a range of pages. (Default is Print All Pages.)
3) Enable the “Shrink to Fit” option when printing the 11” x 17” block diagrams on 8.5” x 11” paper.
4) Click on OK to begin printing.
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gAbout This EPST• The EPST is not intended to replace OEM system documentation. It also does not cover every problem or
situation you may encounter while working on the system. There are probably many situations in which itwould be helpful to refer to OEM system documentation.
• The link icons located at the bottom of every page usually take you to the first page of that section. When alink icon takes you to a specific reference, the link icon on the destination page will generally take you to thefirst page of that section.
• The setup program will create a text file for every page of this tool for your notes. The files are located at:c:/docs/fc5001/persnote/xxx.txtPersonal Notes cannot work if you move these files; the path is hard-coded into the EPST.Personal Notes may not work when the computer is networked.
• The content of the EPST was derived from the contributions of the people listed in the Credits.
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gCredits
Project Sponsors:MultiVendor ServicesMike TeramotoRandy Dusing
HCLS Instructional Technology Program Manager:Robert Rajala
Developers:Rik AkeyLynn PlowmanMelissa Farrell-Lasko
Content Experts and Contributors:Armand LeBlancStephen ScharfDennis Wulf
Graphics:Rich LaiaconaTony GarzaJosh Rasmussen
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g
Self-Paced Training Materials
Note There is no self-paced training available with this release of the Acuson 128 XP10 EPST.
However, we welcome suggestions. Please send us your thoughts regarding self-paced training forinclusion in the next release of this EPST.
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Reference Materials
Note There are no reference materials training associated with this release of the Acuson 128 XP10 EPST.
However, we welcome suggestions. Please send us your thoughts regarding reference materials forinclusion in the next release of this EPST.
GE Medical Systems Acuson 128 XP10 ART Feedback to Author
Assembly andDisassembly
ComponentLocations
ErrorCodes
FunctionalChecks/Procedures
Logic/BlockDiagrams
PreventiveMaintenance
Software Theory Troubleshooting/Diagnostics
ReferenceMaterials
Notes
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Feedback to Author
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You may find it helpful to “cc:" one or more of the people listed in the EPST Credits.