epson gt-s80_gt-s50 service manual
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EPSON GT-S80 / GT-S50
Color Document Scanner
Service Manual
SESC08-004
Confidential
Confidential
PRECAUTIONSPrecautionary notations throughout the text are categorized relative to 1) Personal injury and 2) damage to equipment.
DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performing procedures preceded by DANGER Headings.
WARNING Signals a precaution which, if ignored, could result in damage to equipment.
The precautionary measures itemized below should always be observed when performing repair/maintenance procedures.
DANGER
1. ALWAYS DISCONNECT THE PRODUCT FROM THE POWER SOURCE AND PERIPHERAL DEVICES PERFORMING ANY MAINTENANCE OR REPAIR PROCEDURES.
2. NO WORK SHOULD BE PERFORMED ON THE UNIT BY PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES AS DICTATED FOR ALL ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.
3. WHEN PERFORMING TESTING AS DICTATED WITHIN THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED TO DO SO. WHEN THE POWER SUPPLY CABLE MUST BE CONNECTED, USE EXTREME CAUTION IN WORKING ON POWER SUPPLY AND OTHER ELECTRONIC COMPONENTS.
4. WHEN DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE TO WEAR GLOVES TO AVOID INJURIER FROM METAL PARTS WITH SHARP EDGES.
WARNING
1. REPAIRS ON EPSON PRODUCT SHOULD BE PERFORMED ONLY BY AN EPSON CERTIFIED REPAIR TECHNICIAN.
2. MAKE CERTAIN THAT THE SOURCE VOLTAGES IS THE SAME AS THE RATED VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT HAS A PRIMARY AC RATING DIFFERENT FROM AVAILABLE POWER SOURCE, DO NOT CONNECT IT TO THE POWER SOURCE.
3. ALWAYS VERIFY THAT THE EPSON PRODUCT HAS BEEN DISCONNECTED FROM THE POWER SOURCE BEFORE REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.
4. IN ORDER TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC WRIST STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.
5. DO NOT REPLACE IMPERFECTLY FUNCTIONING COMPONENTS WITH COMPONENTS WHICH ARE NOT MANUFACTURED BY EPSON. IF SECOND SOURCE IC OR OTHER COMPONENTS WHICH HAVE NOT BEEN APPROVED ARE USED, THEY COULD CAUSE DAMAGE TO THE EPSON PRODUCT, OR COULD VOID THE WARRANTY OFFERED BY EPSON.
6. WHEN USING COMPRESSED AIR PRODUCTS; SUCH AS AIR DUSTER, FOR CLEANING DURING REPAIR AND MAINTENANCE, THE USE OF SUCH PRODUCTS CONTAINING FLAMMABLE GAS IS PROHIBITED.
Confidential
About This ManualThis manual describes basic functions, theory of electrical and mechanical operations, maintenance and repair procedures of the scanner. The instructions and procedures included herein are intended for the experienced repair technicians, and attention should be given to the precautions on the preceding page.
Manual Configuration
This manual consists of four chapters and Appendix.
CHAPTER 1.PRODUCT DESCRIPTION Describes the features and basic specifications of the product.
CHAPTER 2.OPERATING PRINCIPLES Describes the electrical and mechanical basic operating principles of the product.
CHAPTER 3.TROUBLESHOOTING Describes the step-by-step procedures for the troubleshooting.
CHAPTER 4.DISASSEMBLY/ASSEMBLY Describes the step-by-step procedures for disassembling and assembling the product.
CHAPTER 5.ADJUSTMENT Provides Epson-approved methods for adjustment.
CHAPTER 6.MAINTENANCE Provides preventive maintenance procedures and the lists of Epson-approved lubricants and adhesives required for servicing the product.
APPENDIX Provides the following additional information for reference:• Connector pin assignments• Exploded diagram/Parts List
Symbols Used in this Manual
Various symbols are used throughout this manual either to provide additional information on a specific topic or to warn of possible danger present during a procedure or an action. Be aware of all symbols when they are used, and always read NOTE, CAUTION, or WARNING messages.
ADJUSTMENTREQUIRED
Indicates an operating or maintenance procedure, practice or condition that is necessary to keep the product’s quality.
CAUTION Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed, could result in damage to, or destruction of, equipment.
CHECKPOINT
May indicate an operating or maintenance procedure, practice or condition that is necessary to accomplish a task efficiently. It may also provide additional information that is related to a specific subject, or comment on the results achieved through a previous action.
WARNING Indicates an operating or maintenance procedure, practice or condition that, if not strictly observed, could result in injury or loss of life.
REASSEMBLY Indicates a product reassembly procedure, practice or condition that must be executed in accordance with the specified standards to keep the product's quality.
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Confidential
Revision StatusRevision Date of Issue Description
A November 10, 2008 First release
B February 17, 2009
[Chapter 1]
[Chapter 3]
[Chapter 4]
[Chapter 5]
• Correction of LED status in “Table 1-4. Error Definition and Remedy List” (p17)
• Addition and correction of errors in “Table 3-1. Error List” (p24)
• Changes due to MP packaging in “ Protection with Original Packings (Scanner’s Main Body)” (p31) • Update photo with MP packaging in “Figure 4-5. Protecting the Scanner’s Main Body with Original Packings (2)” (p32) • Changes due to MP packaging in “ Protection without Original Packings (Scanner’s Main Body)” (p33) • Correction of part name in “4.2.14 Carriage Assy (Top)” (p69) • Addition of Sensor Lever assembly in “4.2.18 Top Cover Assy” (p74)
• Changes to Reading EEPROM Data in “5.3.1 Reading and Writing EEPROM Data” (p80) • Addition of Latest Error Code in “Table 5-4. Details of Latest Error Code” (p81) • Addition of chart counter in “5.3.2 Shading Adjustment” (p83) • Addition of chart counter and correction of chart name in “5.3.3 Find Edge Adjustment” (p84)
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EPSON GT-S80/S50 Revision B
6Confidential
ContentsChapter 1 PRODUCT DESCRIPTION1.1 Features................................................................................................................. 91.2 Specifications .................................................................................................... 101.3 Operating System Compatibility ........................................................................ 131.4 Interface.............................................................................................................. 131.5 Exterior Specifications ....................................................................................... 14
1.5.1 Operation Buttons.................................................................................... 141.5.2 LED Indicator .......................................................................................... 141.5.3 Dimensions .............................................................................................. 151.5.4 Maximum Document Size and Placement .............................................. 15
1.6 Control Codes..................................................................................................... 161.7 Error-Time Processing........................................................................................ 17
Chapter 2 OPERATING PRINCIPLES2.1 Engine Operation Outline................................................................................... 19
2.1.1 Carriage Unit ........................................................................................... 192.2 Document Feeding Mechanism.......................................................................... 20
2.2.1 Configuration........................................................................................... 202.2.2 Scanning Operation ................................................................................. 212.2.3 Detecting Double Feeding (GT-S80 only) .............................................. 22
Chapter 3 TROUBLESHOOTING3.1 Overview ............................................................................................................ 24
3.1.1 Self-Diagnostic Function......................................................................... 243.2 Troubleshooting.................................................................................................. 25
Chapter 4 DISASSEMBLY / ASSEMBLY4.1 Overview ............................................................................................................ 29
4.1.1 Precautions .............................................................................................. 294.1.2 Recommended Tools ............................................................................... 294.1.3 Recommended Screws ............................................................................ 294.1.4 Protection for Transportation .................................................................. 304.1.5 Differences between the Models ............................................................. 34
4.2 Disassembly Procedure ...................................................................................... 354.2.1 Input Tray Assy ....................................................................................... 374.2.2 Separator Module/Paper Feed Roller/Separation Pad ............................. 374.2.3 Switch Holder/ DC Cable Connector ...................................................... 404.2.4 Base Cover/Switch Harness/Foot ............................................................ 424.2.5 Top unit ................................................................................................... 444.2.6 Main Board Assy..................................................................................... 494.2.7 Bottom Cover .......................................................................................... 514.2.8 Carriage Assy (Bottom)........................................................................... 534.2.9 Ultra Sonic RX Board/
Ultra Sonic Sensor (Receiver) (GT-S80 only) .......................................... 564.2.10 Door Sensor ........................................................................................... 594.2.11 Bottom Cover Mylar/Edge Guide ......................................................... 604.2.12 Hinge Cover .......................................................................................... 624.2.13 Front Cover/LCM Board/Display Cover............................................... 634.2.14 Carriage Assy (Top) .............................................................................. 694.2.15 Paper Path Sensor .................................................................................. 704.2.16 Ultra Sonic TX Board/Ultra Sonic Sensor (transmitter) ....................... 714.2.17 Metal Frame Assy ................................................................................. 734.2.18 Top Cover Assy..................................................................................... 74
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EPSON GT-S80/S50 Revision B
7Confidential
Chapter 5 ADJUSTMENT5.1 Adjustment Items and Overview........................................................................ 77
5.1.1 List of Adjustment Items ......................................................................... 775.1.2 Required Adjustments after Removing/Replacing Parts ......................... 78
5.2 Adjustment Program Overview.......................................................................... 785.2.1 Operational Environment ........................................................................ 785.2.2 How to Use Adjustment Program............................................................ 79
5.2.2.1 File and folder structure of the Adjustment Program.......................... 795.2.2.2 Starting up the Adjustment Program................................................... 79
5.3 Adjustment ......................................................................................................... 805.3.1 Reading and Writing EEPROM Data...................................................... 805.3.2 Shading Adjustment ................................................................................ 835.3.3 Find Edge Adjustment ............................................................................. 845.3.4 Firmware Version Check......................................................................... 855.3.5 Firmware Update ..................................................................................... 85
5.3.5.1 Firmware update of the Main Board 855.3.5.2 Firmware update of the Panel 86
5.4 Test Charts Maintenance .................................................................................... 87
Chapter 6 MAINTENANCE6.1 Overview ............................................................................................................ 89
6.1.1 Cleaning................................................................................................... 896.1.2 Lubrication .............................................................................................. 90
Chapter 7 APPENDIX7.1 Connectors.......................................................................................................... 92
7.1.1 Connector Reference Table ..................................................................... 927.1.2 Connector Arrangement .......................................................................... 93
7.2 Exploded Diagram / Parts List ........................................................................... 94
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C H A P T E R
1PRODUCT DESCRIPTION
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EPSON GT-S80/S50 Revision B
PRODUCT DESCRIPTION Features 9Confidential
1.1 FeaturesThe main features of the EPSON GT-S80/S50 are as follows.
Fast double-sided scanning using the fixed carriages and document feeding mechanism to meet the demand for business use massive scanning
Warmup-less scanning using the white LED light source
Supports various document sizes
Easy-to-see and easy-to-use control panel using LCD
High-Speed Scanning
ResolutionScanning speed (ppm*1 / ipm*2)
GT-S80 GT-S50200dpi 40ppm / 80ipm 25ppm / 50ipm300dpi 17ppm / 34ipm 10ppm / 20ipm
400dpi / 600dpi 4ppm / 8ipm 2ppm / 4ipmNote"*1" : ppm = Page Per Minute
"*2" : ipm = Image Per MinuteNOTE: Scan condition
A4 document; scanned using EPSON Scan on the PC (Core™2 CPU6700, 2.66GHz, 2GB RAM, Windows XP) connected through USB 2.0 interface.
EPSON Event Manager
Supports a wide variety of file formats; BMP, JPEG, TIFF, PDF
Maximum 10 scanning conditions can be registered
EPSON Scan
Simple operation met the demand for business use
Works as a stand-alone graphics application In addition to TWAIN driver function, allows you to save an image file without using any other graphics application.
PDF solutions: Scans and saves multiple pages directly to PDFs only with the scanner buttons and creation of the following PDFs is available:
• Searchable PDF Supported languages: Japanese, English, French, Italian, German,
Spanish, Portuguese, Dutch, Russian, Ukrainian• High compression PDF• Encrypted PDF
Skip blank pages
Punch hole removal
ADF skew correction
Text enhancement for color, B/W and grayscale
Color enhancement and dropout functions for B/W and grayscale
Auto Area Segmentation (AAS)
Offers 5,100 x 21,600 pixels of maximum scanning size
Double-sided scanning
Double feed detection (GT-S80 only)
Fast continuous scanning
Up to 75 sheets of paper (75 g/m2) can be set at a time
Interface
USB 2.0 Hi-speed
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EPSON GT-S80/S50 Revision B
PRODUCT DESCRIPTION Specifications 10Confidential
1.2 SpecificationsTable 1-1. Scanner Specifications
Product type Sheet Feed, one pass duplex, A4 Color Document Scanner
Scanning method Fixed carriage and moving document
Optical sensor 3-line color CCD
Maximum document size
8.5 x 36 inches (216 x 914 mm)
Document size A4, US letter, Legal, B5, A5, A6, Business card, Plastic card*1, Emboss card*1, A3*2, B4*2, Custom sizes*3
Effective pixels 5,100 (main scan) x 21,600 (sub scan) pixels at 1200 dpi
Maximum output pixels
5,100 (main scan) x 21,600 (sub scan) pixels
Scanning resolution • 600 dpi (main scan) • 600 dpi (sub scan); (Mechanical step is 300dpi.)
Output resolution 75, 100, 150, 200, 240, 300, 400, 600, dpi
Pixel depth Input: 16 bits per pixel Output: 1, 8 bits per pixel
Output tone 1, 8, 24 bit per pixel (Selectable)
Scanning speed A4 size
Feeding method Friction feed by rollers
Paper capacity 75 sheets (75 g/m2)
Paper weight • Auto : 50 - 130 g/m2
• Manual : 45 - 200 g/m2
Document setting position
Center of the document table
Scan Volume
Interface USB 2.0 Hi-Speed (Standard)
Light source White LED
Push buttons 1 switch : Power4 buttons : Start, Cancel, Up arrow, Down arrow
Command level ESC/I-D2 (FS Support)
Double feed detection
The following two types of setting are available from TWAIN driver.Thin Paper : 50 - 90 g/m2
Standard Paper : 60 - 130 g/m2
Note"*1" : Portrait scanning only."*2" : Using a carrier sheet"*3" : 53.5 mm x 73.7 mm - 216 mm x 914.4 mm
CONSUMABLES
Roller Assembly Kit Contents: Paper Feed Roller, Separation Pad (one each)
Carrier Sheet Contents: Carrier Sheet (five sheets) Insert the following documents into the Carrier Sheet when scanning them.
B4 or A3 sized documents: Fold the documents in half
Documents with irregular shape such as newspaper clippings
Documents with holes or perforations
Paper Supply : Face down loadingPaper out : Face down ejecting
GT-S80 150 dpi : 0.73 msec/line 200dpi : 0.501 msec/line 300dpi : 0.813 msec/line 400 dpi / 600 dpi : 1.484 msec/lineGT-S50 150 dpi : 0.73 msec/line 200dpi : 0.501 msec/line 300dpi : 1.23 msec/line 400 dpi / 600 dpi : 1.484 msec/line
GT-S80 :1,800 pages/dayGT-S50 :1,200 pages/day
Table 1-1. Scanner Specifications
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EPSON GT-S80/S50 Revision B
PRODUCT DESCRIPTION Specifications 11Confidential
ELECTRICAL SPECIFICATIONS
Table 1-2. Electrical SpecificationsMain unit
Rated input voltage 24 VDC
Input voltage 24 - 26.4 VDC
Rated input current 2 A
Power consumption Operating GT-S80: 45W GT-S50: 40 W
Ready mode GT-S80: 13W GT-S50: 13 W
Sleep mode GT-S80: 5.5W GT-S50: 5.5 W
Power Off GT-S80: 1W GT-S50: 1 W
AC adapter
Rated input voltage 100 - 240 VAC
Input voltage 85 - 276 VAC
Rated input current 1.2 A
Rated input frequency 50 - 60 Hz
Input frequency range 50 - 60 Hz ± 3Hz
Rated output voltage 24 VDC
Output voltage 24 - 26.4 VDC
Rated output current 2 A
Insulation resistance 100 M ohms or more at 500 VDC (between AC input terminal and DC output terminal)
Insulation voltage 3000 VAC for 1 min. (AC input terminal and DC output terminal)
Leakage current 0.25 mA or less at 276 VAC
Inrush current 125A at maximum
EMC AND SAFETY STANDARDS COMPLIANCE
Scanner
Voltage Regulation (Safety/EMC) Country Standard Name
100V FCC U.S.A FCC Part15 Subpart B Class B
ICES003 Canada CAN/CSA-CEI/IEC CISPR 22
Taiwan Registration of Product Certification System
Taiwan CNS13438 Class B CNS14336
200V EMC Directive EU EN55022 Class B EN55024
Russian Federation Law on Consumer Rights Protection #1
Russia GOST-R (IEC60950-1, IEC60825-1,CISPR 22)
CCC#1 China GB4943 GB9254 Class B, GB17625.1
Korean EMC regulation Korea KN22 Class B KN61000-4-2/-3/-4/-5/-6/-11
Australia EMC frame work (C-tick)
Australia AS/NZS CISPR22 Class B
AC Adapter
Voltage Regulation (Safety/EMC) Country Standard Name
100V UL U.S.A UL60950-1
FCC U.S.A FCC Part15 Subpart B Class B
CSA Canada CAN/CSA-C22.2 No.60950-1
ICES003 Canada CAN/CSA-CEI/IEC CISPR 22 Class B
Nom Mexico NOM-019-SCFI-1998
Taiwan Registration of Product Certification System
Taiwan CNS13438 Class B CNS14336
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EPSON GT-S80/S50 Revision B
PRODUCT DESCRIPTION Specifications 12Confidential
STATIC ELECTRICITY
Contact discharge: 2 kV, 4 kV, 5 kV Air discharge: 2 kV, 4 kV, 8 kV, 10 kV
ENVIRONMENTAL
Table 1-3. Environmental RequirementsTemperature Operating 50 to 95 °F (10 to 35 °C)
Storage -13 to 140 °F (-25 to 60 °C)
Humidity Operating 10 - 80 % (non-condensing)
Storage 10 - 85 % (non-condensing)
Dust Ordinary office or home conditions. Extreme dust should be avoided.Illumination Operation under direct sunlight or near strong light source should be avoided.
RELIABILITY
Scanner: GT-S80 : 450,000 cycles (1,800 pages/day) GT-S50 : 300,000 cycles (1,200 pages/day)
Roller Assembly Kit*1 : 100,000 cyclesCarrier Sheet*1 : 500 cycles
Note *1 : Consumables (End-user obtainable/replaceable)
DOCUMENT TYPE
Paper type : High quality paper, recycle paperDocument size Maximum : 216 mm x 914.4 mm Minimum : 53.5 mm x 73.7 mmPaper weight : Auto : 50 - 130 g/m2
Manual: 45 - 200 g/m2
Papers that are not guaranteedCoated paperPaper weight of 40g/m2 or more, to less than 45g/m2
The following document should be avoided.
H
L
200V Low Voltage Directive EU EN60950-1
EMC Directive EU EN55022 Class B, EN55024 EN61000-3-2, EN61000-3-3
GS Germany EN60950-1
Consumer Protection (Safety Requirements) Registration Scheme
Singapore IEC60950-1
Russian Federation Law on Consumer Rights Protection #1
Russia GOST-R (IEC60950-1, CISPR 22)
CCC#1 China GB4943 GB9254 Class B, GB17625.1
Korean Safety Regulation Korea K60950, KN14, KN14-1
EPSR, Hong Kong Safety Hong Kong IEC60950-1
Argentina Safety Regulation Argentina IEC60950-1
Saudi Arabian Safety Regulation Saudi Arabia
IEC60950-1
Australia Safety Regulation Australia AS/NZS 60950.1
Australia EMC frame work (C-tick)
Australia AS/NZS CISPR22 Class B
CAUTIONDocuments bound with a staple or clip, etc.Document with labels or tape attachedDocuments with holes and Loose leafFolded paperEnvelopePhoto paper, OHP sheetCurling paper whose curling portion is longer than 30mm, and higher than 5mm
Paper whose weight is less than 40 g/m2 or more than 200g/m2
Thermal paperMagazine clipping
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EPSON GT-S80/S50 Revision B
PRODUCT DESCRIPTION Operating System Compatibility 13Confidential
1.3 Operating System CompatibilityThe scanner is compatible with the following operating systems.
Interface Operating System
USB 2.0 Hi-Speed
Note *1 : Windows Vista or Windows XP-based computer equipped with USB 2.0 Hi-Speed interface as standard. Those upgraded from Windows 2000 Professional are also available. In such cases, a USB 2.0 driver provided by Microsoft is required.
*2 : iMac/iBook/Power Book/Power Macintosh equipped with USB2.0 interface as standard.
1.4 InterfaceThe interfaces of this scanner are shown below.
USB 2.0
AC InputPower Button
Figure 1-1. Interface
USB 2.0
Universal Serial Bus Specification Revision 2.0 compliant.
Vendor ID : 04B8h
Product ID GT-S80 : 0136H GT-S50 : 0137H
Connector USB 2.0 (Type-B standard connector): x1
USB host The functionality of the USB port(s) must be ensured by the vendor of the computer.
Connection requirement Using the recommend USB cable, connect the scanner directly to the computer or make the connection via a single hub. Cascade connection is not supported.
• Microsoft Windows Vista 32-bit/64-bit*1
• Microsoft Windows XP Home/Professional/Professional X64*1
• Microsoft Windows 2000 Professional*1
• Mac OS X 10.3.9 or later*2
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EPSON GT-S80/S50 Revision B
PRODUCT DESCRIPTION Exterior Specifications 14Confidential
1.5 Exterior Specifications
1.5.1 Operation ButtonsPower Button (See Figure 1-1) Turns the scanner on and off.
Start Button Starts the EPSON Scan.
Cancel Button Cancels operation.
Up/Down button Selects items or setting values.
NOTE: When the Document Tray is closed, the scanner turns to power-saving mode. When the tray is open, the scanner returns from the power-saving mode.
1.5.2 LED IndicatorThe colors and status (flashing/On/Off) of Power LED and Error LED indicate the scanner statuses as described below.
Status Power LED (Green) Error LED (Orange)
Ready On Off
Busy * Flashing Off
Fatal Error Flashing Flashing
Paper detect error On Off
Cover Open Off On
Error LED Power LED
Start Button Cancel Button
LCD
Down Button Up Button
Note * : Scanning, or initializing
Figure 1-2. Buttons and LED
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EPSON GT-S80/S50 Revision B
PRODUCT DESCRIPTION Exterior Specifications 15Confidential
1.5.3 DimensionsDimensions and Weight
Dimensions : 303(W) x 202(D) x 213(H) mm (Excluding protrusions)
Weight : 5.0 kg
External Drawing
470
Unit: mm
202
303
213
Figure 1-3. External Dimensions
1.5.4 Maximum Document Size and Placement
REFLECTIVE DOCUMENT
Dimension: 216 mm (Horizontal) x 914.4 mm (Vertical)
Unit: mm
914.4
108
216
Figure 1-4. Reflective Document Scanning Range
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EPSON GT-S80/S50 Revision B
PRODUCT DESCRIPTION Control Codes 16Confidential
1.6 Control CodesThe following table lists the control codes used for the scanner.
Category Command Name Code
Execution command ID request ESC I
Status request ESC F
Extended status request ESC f
Status setting request ESC S
Scan start ESC G
Push button status request ESC !
Extended ID request FS I
Scanner status request FS F
Scanning parameter request FS S
New scan start FS G
Data form setting Data format setting ESC D i
Resolution setting ESC R n1 n2
Scanning area setting ESC A n1 n2 n3 n4
Color setting ESC C i
Parameter setting FS W
Correction Processing Gamma correction setting ESC Z i
Gamma correction table setting ESC z i d [256]
Image Processing Threshold value setting ESC t I
Support and Miscellaneous
Scan mode setting ESC g i
Initialization ESC @
Line counter setting ESC d i
Option control ESC e i
Film type designation ESC N i
Paper exit FF
Paper loading PF
Warm-up cancel ESC w
Control Normal response ACK
Abnormal response NACK
Scanning stop CAN
Header STX
Category Command Name Code
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EPSON GT-S80/S50 Revision B
PRODUCT DESCRIPTION Error-Time Processing 17Confidential
1.7 Error-Time ProcessingTable 1-4. Error Definition and Remedy List
Category Power LED (Green) Error LED (Orange) Cause Scanner response Recovery
Command error LED status is not influence by this error An invalid command or invalid command parameter was detected.
The error condition is cleared when the scanner receives a valid command.
Fatal error Flashing Flashing Turn the scanner off and then back on.
• The scanner ignores the incorrect command or parameter. Current setting maintained.
• The scanner returns NACK, and waits for the next command parameter.
• The main unit is faulty. • LED is broken.
• The scanner turns the LED off and stops the operation.
• The scanner sets Bit 7 of the status bit.
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C H A P T E R
2 OPERATING PRINCIPLES
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EPSON GT-S80/S50 Revision B
OPERATING PRINCIPLES Engine Operation Outline 19Confidential
2.1 Engine Operation OutlineThis chapter describes the functions and operating principles of GT-S80/S50 engine.
GT-S80/S50 is a document scanner that feeds documents through the fixed carriages. The scanner mounts two carriage units for the frontside and backside of the document to provide the simultaneous double-sided scanning.
The engine mainly consists of two components: the carriage units and document feeding mechanism.
2.1.1 Carriage UnitThe carriage unit consists of the CCD sensor board, LED board (for the light source), and the mirror/lens mechanism. (See Figure 2-1, Figure 2-2)
CCD sensor board
CCD sensor
LED board
Figure 2-1. Configuration of the Carriage Unit
CCD Sensor Board Comprises a 3-line color CCD (Independent R, G, B) and its control/drive circuits.
LED Board Uses a white LED as the light source.
Mirror/Lens Mechanism The beams applied to the document to be scanned are reflected on the surfaces and pass through the mirror/lens mechanism in the carriage units to correct the beam axis, then reach the CCD Sensor. The extraction of light components R, G, B, is done by the color CCD sensors themselves, not by the traditional light source switching between R, G and B.
Document feeding direction
Carriage unit (for backside scan)
LED board
Mirror 1Mirror 2
Mirror 3
Mirror 4
LensCCD sensor
Carriage unit (for frontside scan)
Back side (document)
Front side (document)
Figure 2-2. Mirror/Lens Mechanism
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EPSON GT-S80/S50 Revision B
OPERATING PRINCIPLES Document Feeding Mechanism 20Confidential
2.2 Document Feeding MechanismGT-S80/S50 provides continuous scanning for various sizes of documents using the mechanism with the fixed carriages that feeds documents to the scanning section one by one from the document tray. This section describes the document feeding mechanism and its operation.
NOTE: Some sizes of the documents require a carrier sheet.
2.2.1 ConfigurationThe document feeding mechanism of the GT-S80/S50 consists of the motors, rollers, and three kinds of sensors as shown in Table2-1.
Table 2-1. ADF Mechanism Configuration
No. Parts Name Function
1PF motor Drives the PF Roller/EJ roller.
Counter-Clockwise direction: Feeds documents.
2Pickup motor Drives the Paper Feed Roller.
Counter-Clockwise direction: Picks up / separates documents.
3 Paper Feed Roller (Consumables)
Picks up documents on the document tray and feeds the documents to the PF Roller.
4 Separation pad (Consumables)
Separates documents one by one to prevent double feeding.
5 PF Roller Feeds documents during scanning.
6 EJ roller Ejects documents after scanning.
7 Idle roller Feeds documents in coordination with the PF Roller and EJ roller during scanning.
8
Door sensor Detects whether the top unit is open or closed.
Status Door Sensor
Cover OPEN Not Shielded
Cover CLOSED Shielded
9
Tray sensor Detects whether the document tray is open or closed. When the document tray is closed, the scanner turns to power-saving mode. When the tray is open, the scanner recovers from the power-saving mode.
Status Tray Sensor
OPEN Shielded
CLOSE Not Shielded
10
Paper path sensor This sensor consists of the paper path sensor lever and a photocoupler. It locates right behind the PF Roller. When a document touches the lever, the receiver of the photocoupler changes to the “not shielding” state, then the sensor detects the document.
Status Paper Path Sensor Lever Position
Document passing Not Shielding
Document not passing Shielding
11
Paper detect sensor This sensor consists of the paper detect sensor lever and a photocoupler. It locates right in front of the Paper Feed Roller. When no document is on the document tray, the paper detect sensor lever shields the receiver of the photocoupler. When a document is placed onto the document tray properly, the paper detect sensor lever moves and makes the receiver open, then the sensor detects the document is set on the tray.
Status Paper Detect Sensor Lever Position
Document Loaded Not shielding
No Document Shielding
12Double feeding detect sensors (Ultra sonic sensor; GT-S80 only)
The sensors consist of the transmitter and the receiver. They locate right in front of the PF Roller. See ?Detecting Double Feeding (GT-S80 only)? on page 22.
.
Note : See Figure 2-3 for the position of each motor, roller, or sensor.
Table 2-1. ADF Mechanism Configuration
No. Parts Name Function
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1
3
4
5
6
7
9
8
11
10
2
12
EPSON GT-S80/S50 Revision B
OPERATING PRINCIPLES Document Feeding Mechanism 21Confidential
Figure 2-3. Document Feeding Mechanism
2.2.2 Scanning OperationThe documents set on the document tray are fed one by one separated with the separate pad and the paper feed roller. It is fed with the PF roller in synchronization with the timing of scanning by the carriage.
After the end of the document is detected by the paper detect sensor, the document is fed a few more steps and the scanning is regarded as complete. Then the EJ roller ejects the document to the paper eject tray.
In the case of double-sided scanning, both the frontside and backside of the document is scanned simultaneously during document feeding.
Idle roller
Idle roller
EJ roller
PF roller
Paper feed roller
Carriage (for backside scan)
Cross-section view
Separate pad
Carriage (for frontside scan)
Document
Figure 2-4. Scanning Operation
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EPSON GT-S80/S50 Revision B
OPERATING PRINCIPLES Document Feeding Mechanism 22Confidential
2.2.3 Detecting Double Feeding (GT-S80 only)GT-S80 mounts ultra sonic sensors to detect double feeding during continuous scanning. There are two ultra sonic sensors on both the transmitter and the receiver across the paper feeding path. Ultrasonic emitted from the transmitter goes through the document(s) and reaches the receiver. The receiver monitors the changes, and if the receiver detects the double feeding, the scanner indicates the double feeding error.
The ON/OFF setting of double feeding detection can be carried out by TWAIN driver (EPSON scan) and the detection sensitivity is also selectable according to the document thickness.
Feeding direction
Ultra Sonic Sensor (Transmitter)
First document
Second document
Feeding direction
Normalfeeding
Ultra Sonic Sensor (Receiver)
Double feeding
Figure 2-5. Double Feeding Detect Mechanism
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EPSON GT-S80/S50 Revision B
TROUBLESHOOTING Overview 24Confidential
3.1 OverviewThis chapter explains the remedies for errors detected by the self-diagnostic function, and the troubleshooting based on observed symptoms to troubleshoot the problems on the scanner quickly and efficiently.
3.1.1 Self-Diagnostic FunctionThis scanner has a self-diagnostic function that automatically checks the operating status of major components, and indicates the error status with the LCD and/or LED on the control panel. The following are the error statuses and their remedies.
Table 3-1. Error List
Error Name LCD Indication Power LED(Green)
Error LED(Orange) Cause Remedy/Point to be checked
Paper Jam ErrorE1:
PAPER JAMFlashing Flashing
The document is jammed. 1. Open the Top Unit.2. Remove the jammed document and close the Top Unit.
Cover Open ErrorE2:
COVER OPENOff On
The Top Unit is open. Close the Top Unit.
Document Detect ErrorE3:
NO DOC. FOUND*1 On OffNo document is detected. Place the document correctly on the Document Tray.
Double Feeding ErrorE4:
DOUBLE FEEDFlashing Flashing
Double feed is detected during document feeding.
1. Open the Top Unit.2. Remove the jammed document and close the Top Unit
Fatal ErrorFE:
FATAL ERRORFlashing Flashing
The main unit is faulty. (LED of the carriage is broken or the like)
Turn the scanner off, then turn it back on.In case whereby the Fatal Error is repeatable or cannot recover, observe the operation before error occur and confirm on the related parts.
No Connection Error--:
NO CONNECTIONOn Off
The USB cable connecting the scanner and PC is disconnected.
Connect the scanner and PC with the USB cable.
Maintenance Error*2 LCD status is not influence by this error On Off
The Separation Pad and Paper Feed Roller reaches the end of life.
1. Replace the Separation Pad and Paper Feed Roller with a new one.
2. Reset counter under maintenance of Epson Scan Settings.*3
Note *1 : This error LCD indication will only be displayed when scan using “Start” button of the unit with no document in the Document Tray. In the case whereby ‘Scan’ is activated in Epson Scan with no document in the Document Tray, there will not be LCD indication. Instead, a message to load document into the Document Tray will be displayed on the computer screen.
*2 : When the Separation Pad and Paper Feed Roller reaches the end of life, a warning message is displayed on EPSON Scan.
*3 : Adjustment Program do not control the Separation Pad and Paper Feed Roller counter. This counter is control and reset from Epson Scan.
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EPSON GT-S80/S50 Revision B
TROUBLESHOOTING Troubleshooting 25Confidential
3.2 TroubleshootingThis section provides troubleshooting procedures based on observed symptoms.
In here, specify the troubled part based on an observed symptom. Refer to Table 3-2 and find the problem matching what you observe, then follow the procedures in the corresponding column referred in the right-hand column.
Table 3-2. Problem and Phenomenon
Problem Symptom Reference Table
Scanned image is not clear. Scanned image is not clear. 3-3The scanner does not operate even when turning it on.
The scanner does not perform initial operation when turning it on.
3-4
The host does not recognize the scanner even if turning it on. 3-5
Fatal error has occurred. Both Power LED (green) and Error LED (orange) flash, and the scanner does not recover from the error even after restarting it.
The Carriage LED does not light. 3-6
The scanner does not start scanning when the document is placed on the document tray.
The document is not detected. 3-7The document is not fed. 3-8
Document is jammed. --- 3-9Double feed is not detected. (GT-S80 only)
--- 3-10
Table 3-3. Scanned image is not clear
Step Possible Cause Check Point Action on Error
1 The scanning sections of carriage (glass parts) have dust, etc. (Image has white spots)
Is there any dirt or dust on the scanning sections of carriage (glass parts)?
Remove the dirt and dust.See “6.1.1 Cleaning”.
2 There is some foreign material such as dust on the inside surface of the scanning sections of carriage (glass parts). (Vertical banding appears on the image.)
Is there any dirt or dust on the inside surface of the scanning sections of carriage (glass parts)?
Replace the Carriage Assy (Top)/Carriage Assy (Bottom).
3 Carriage Assy (Top) Board/Carriage Assy (Bottom) Board failure
Is there any abnormality in the Carriage Assy (Top) Board/Carriage Assy (Bottom) Board?
4 Main board failure Is there any abnormality in the scanned images?
Replace the Main Board Assy.
5 Mechanism failure --- Replace the Metal Frame Assy.
Table 3-4. The scanner does not perform initial operation when turning it on.
Step Possible Cause Check Point Action on Error
1 Some connectors are disconnected.
Check if all the connectors are connected correctly.
Connect them correctly.
2 Switch harness failure Is there any abnormality in the switch harness?
Replace the Switch Harness.
3 DC cable connector failure
Is there any abnormality in the DC cable connector?
Replace the DC cable connector.
4 Main board failure --- Replace the Main Board Assy.
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Table 3-5. The host does not recognize the scanner even if turning it on.
Step Possible Cause Check Point Action on Error
1 The host computer does not support USB.
Select “My Compluter” - “Properties” - “Device Manager” and check if USB is enabled.
Use PC that supports USB.
2 The TWAIN Driver has not been installed correctly.
Is the TWAIN Driver supplied with the scanner installed correctly?
Install (reinstall) the TWAIN Driver for the GT-S80/S50.
3 The USB cable is damaged.
Is there any damage to the USB cable?
Replace the USB cable.
4 Main board failure --- Replace the Main Board Assy.
Table 3-6. The Carriage LED does not light.
Step Possible Cause Check Point Action on Error
1 FFC connecting the Carriage Assy (Top) Board/Carriage Assy (Bottom) Board to the LED board in the carriage is disconnected.
Is the FFC connected correctly? • Carriage Assy (Top)
Board: J4• Carriage Assy (Bottom)
Board: J4
Connect the FFC correctly.
2 Connectors of the harness connecting the Carriage Assy (Top) Board/Carriage Assy (Bottom) Board to the main board is disconnected.
Is the harness connected to the following connector correctly?• Carriage Assy (Top)
Board-Main Board: J4, J5• Carriage Assy (Bottom)
Board-Main Board: J6, J7
Connect the connectors correctly.
3 Failure of the Carriage Assy (Top) Board/Carriage Assy (Bottom) Board
Is there any abnormality in the Carriage Assy (Top) Board/Carriage Assy (Bottom) Board?
Replace the Carriage Assy (Top) Board/Carriage Assy (Bottom) Board.
4 Main board failure --- Replace the Main Board Assy.
Table 3-7. The document is not detected.
Step Possible Cause Check Point Action on Error
1 Connector of the paper detect sensor cable is disconnected from the TX board.
Is the connector connected? TX Board: J3
Connect the connector correctly.
2 Connectors of the harness connecting the TX board and the main board is disconnected.
Is the harness connected correctly?• Main Board: J8, J14, J15• TX Board: J2
Connect the connectors correctly.
3 Operation failure of the paper detect sensor lever.
Check if the paper detect sensor lever moves smoothly.
Replace the Top Cover Assy.
4 Paper detect sensor failure --- Replace the Top Cover Assy.
5 TX board failure --- Replace the TX Board.
6 Main board failure --- Replace the Main Board Assy.
EPSON GT-S80/S50 Revision B
TROUBLESHOOTING Troubleshooting 26Confidential
Table 3-8. The document is not fed.
Step Possible Cause Check Point Action on Error
1 The Separation Pad/Paper Feed Roller is worn out or damaged.
--- Replace the Separation Pad/Paper Feed Roller.
2 The PF Roller is worn out or damaged.
--- Replace the Metal Frame Assy.
3 The Idle Roller of the Top Cover Assy is worn out or damaged.
--- Replace the Top Cover Assy.
4 The connector of the paper detect sensor is disconnected from the TX board.
Is the cable connected correctly? TX board: J3
Connect the connector correctly.
5 The harness that connects the TX board with the main board is disconnected.
Is the harness connected correctly?• Main board : J8,J14,J15• TX board : J2
Connect the connector correctly.
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TROUBLESHOOTING Troubleshooting 27Confidential
6 Operation failure of the paper path sensor lever
Check if the paper path sensor lever moves smoothly.
Replace the Top Cover Assy.
7 The connector of the Pickup Motor/PF Motor is disconnected from the main board.
Is the cable connected to the following connector correctly?• Pickup Motor
Main board: J11• PF Motor
Main board: J10
Connect the connector correctly.
8 Paper path sensor failure --- Replace the Paper Path Sensor.
9 TX board failure --- Replace the TX Board.
10 Failure of the Pickup Motor/PF Motor
Does the Pickup Motor/PF Motor operates normally?
Replace the Metal Frame Assy.
11 Main board failure. --- Replace the Main Board Assy.
Table 3-9. The document is jammed.
Step Possible Cause Check Point Action on Error
1 There is dirt or dust on the document path.
Check if the document paper path get dirt.
Remove the dirt or dust completely.
2 The PF Roller/EJ Roller is worn out or damaged.
--- Replace the Metal Frame Assy.
3 The Idle Roller of the Top Cover Assy is worn out or damaged.
--- Replace the Top Cover Assy.
4 The connector of the Paper Path Sensor is disconnected from the TX board.
Is the cable connected to the following connector correctly? TX board: J4
Connect the connector correctly.
5 Connectors of the harness that connects the TX board with the main board is disconnected.
Is the harness connected correctly?• Main board: J8, J14, J15• TX board: J2
Connect the connectors correctly.
6 Operation failure of the paper path sensor lever.
Check if the paper path sensor lever moves smoothly.
Replace the Top Cover Assy.
7 Paper path sensor failure --- Replace the Paper Path Sensor.
8 TX board failure --- Replace the TX Board.
9 Main board failure --- Replace the Main board Assy.
Table 3-10. Double feed is not detected. (GT-S80 only)
Step Possible Cause Check Point Action on Error
1 Double feed detection is not activated in EPSON Scan setting.
Check the EPSON Scan setting.
Activate the double feed detection on EPSON Scan and make the scan settings for the document to be scanned.
2 Connectors of the Ultra Sonic Sensor are disconnected.
Are the cables connected correctly?• One on Top Unit
TX board: J1• One on Lower Cover
RX board: J1
Connect the connectors correctly.
3 Connectors of the harness that is connected to the TX board/RX board is disconnected.
Is the cable connected to the following connector correctly?• TX board (J2)
Main board: J8, J14, J15• RX board (J2)
LCM board:J2, relay connector
Connect the connector correctly.
4 Ultra Sonic Sensor failure --- Replace the Ultra Sonic Sensor.
5 TX board/RX board failure
--- Replace the TX Board/RX Board.
6 Main board failure --- Replace the Main Board Assy.
Table 3-8. The document is not fed.
Step Possible Cause Check Point Action on Error
Table 3-9. The document is jammed.
Step Possible Cause Check Point Action on Error
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C H A P T E R
4DISASSEMBLY / ASSEMBLY
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Overview 29Confidential
4.1 OverviewThis chapter explains the procedures for disassembling the major units and parts of the product. Unless otherwise explained, reassembly should be carried out in the reverse order of the disassembly procedure. When you have to remove any parts or components that are not described in this chapter, refer to the exploded diagram in the Appendix.
Before starting disassembly, always read the precautions described in the next section.
4.1.1 PrecautionsBefore starting the disassembly or reassembly of the product, read the following precautions given under the headings WARNING and CAUTION.
4.1.2 Recommended ToolsTo protect this product from damage, use the tools indicated in the following table.
Table 4-1. Specified Tools
Name Commercial Availability Epson Part Number
Phillips Screw Driver (No.2) OK ---
Flathead screwdriver OK ---
Long-nose pliers OK ---
Tweezer OK ---
Note : Tools whose Epson Part Number is indicated are available from Epson.
4.1.3 Recommended ScrewsThe following table indicates the screws used in the EPSON GT-S80/S50 Scanner.
Table 4-2. Recommended Screws
No. Name Type1 C.B.P. 3x6 Phillips Bind P-tite Screw, size M3, 6 mm length
2 C.B.P. 3x8 Phillips Bind P-tite Screw, size M3, 8 mm length
3 C.B.P. 3x10 Phillips Bind P-tite Screw, size M3, 10 mm length
4 C.B.S. 3x6 Phillips Bind S-tite Screw, size M3, 6 mm length
5 C.B.S. 3x10 Phillips Bind S-tite Screw, size M3, 10 mm length
6 C.P.F.P 3x8 Phillips Pan Flange P-tite Screw, size M3, 8 mm length
7 C.P.F.S 3x6 Phillips Pan Flange S-tite Screw, size M3, 6 mm length
8 C.P.F.S 3x12 Phillips Pan Flange S-tite Screw, size M3, 12 mm length
9 C.P.(S-P1) 3x6 Phillips Pan Sems S2W1, size M3, 6 mm length
WARNING Before disassembling or reassembling this product, always disconnect the Power Cable and Interface Cable. When you have to work with power on for voltage measurement, etc., take extreme care not to get an electric shock and do the work in accordance with the procedures given in this manual.To prevent cutting your hands with sharp edges, always wear gloves before starting disassembly and reassembly.When touching any internal components, use proper static electricity discharge equipment such as an anti-static wrist strap.
CAUTION Provide sufficient work space for disassembling and reassembling.Always use the recommended tools only for disassembly, reassembly and adjustment.Be sure to tighten the screws to the specified torque.When using compressed air products; such as air duster, for cleaning during repair and maintenance, the use of such products containing flammable gas is prohibited.
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Overview 30Confidential
4.1.4 Protection for TransportationWhen returning the scanner to the user, make sure to pack each part using packing materials to protect the scanner from damage or scratch during transport. If the scanner was brought in without the packing materials used for factory shipment from the user, pack each part referring to " Protection without Original Packings (Scanner’s Main Body) (p33)" .
PROTECTING THE OUTPUT TRAY ASSY
Secure the Output Tray Assy with strong tape as follows.
1. Pull out the Output Tray Assy, and attach Strong Tape (x1) to the center of the Output Tray Assy.
Strong Tape (x1): 50 mm x 20 mm
Fold over the tape’s edge by 5 mmStandard Line
Figure 4-1. Protecting the Output Tray Assy (1)
2. Close the Output Tray Assy and secure it on both the front ends with Strong Tape (x2).
Strong Tape (x2): 80 mm x 28 mm
Fold over the tape’s edge by 5 mmStandard Line
Figure 4-2. Protecting the Output Tray Assy (2)
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In the next step, make sure to place a cloth or the like to prevent damaging the external part.
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DISASSEMBLY / ASSEMBLY Overview 31Confidential
3. Place the scanner upside down.
4. Secure the bottom of the Output Tray Assy from the rear of the scanner with Strong Tape (x1).
Strong Tape (x1): 80 mm x 28 mm
Rear
Fold over the tape’s edge by 5 mm
Figure 4-3. Protecting the Output Tray Assy (3)
PROTECTION WITH ORIGINAL PACKINGS (SCANNER’S MAIN BODY)
Secure and protect the scanner’s main body as follows.
If the scanner was brought in without the packing materials used for factory shipment; therefore the following are not available, secure and protect the scanner referring to " Protection without Original Packings (Scanner’s Main Body) (p33)".
1. Open the Input Tray Assy.
2. Open the Top Unit and attach the strong tape with cushion (x4) to the locations below.
Strong Tape with cushion (x4)
Strong tape with cushion
Right
Strong tape with cushion
Left
Standard Line
Figure 4-4. Protecting the Scanner’s Main Body with Original Packings (1)
CAUTION
CHECKPOINT
Protection Sheet (x1)Cushion 320 mm x 75 mm (x1)Strong Tape 80 mm x 28 mm (x2) Strong Tape with cushion (x4)
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Overview 32Confidential
3. Close the Top Unit, and secure the Protection Sheet to the front of Top Unit with strong tape.
Protection Sheet
Strong Tape (x2): 80 mm x 28 mm
5 mm5 mm
Protection Sheet
Standard Line
Figure 4-5. Protecting the Scanner’s Main Body with Original Packings (2)
4. Open the cover of Input Tray Assy on the rear, and place the cushion in between.
Cushion: 320 mm x 75 mm
Cushion
With the Input Tray Assy openRear
Cushion
With the Input Tray Assy closed
Rear
Figure 4-6. Protecting the Scanner’s Main Body with Original Packings (3)
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Overview 33Confidential
PROTECTION WITHOUT ORIGINAL PACKINGS (SCANNER’S MAIN BODY)
If the scanner was brought in without the packing materials used for factory shipment, secure and protect the scanner as follows:
If the scanner was brought in with the packing materials used for factory shipment and the following are available, secure and protect the scanner referring to " Protection with Original Packings (Scanner’s Main Body) (p31)".
1. Open the Input Tray Assy.
2. Open the Top Unit and attach Strong Tape (x4) to the locations below.
Strong Tape (x3): 100 mm x 28 mm
Strong Tape (x1): 60 mm x 28 mm
100mm
Right
60mm
100mm
Left
Fold over the tape’s edge by 5 mmStandard Line
Figure 4-7. Protecting the Scanner’s Main Body (1)
3. Close the Top Unit, and secure the air packing (x1) to the front of Top Unit with Strong Tape (x2).
Air packing: 300 mm x 150 mm (± 20 mm)
Strong Tape (x2): 90 mm x 28 mm
90mm 90mm
Air packing
Fold over the tape’s edge by 5 mmStandard Line
Figure 4-8. Protecting the Scanner’s Main Body (2)
CHECKPOINT
Protection Sheet (x1)Cushion 320 mm x 75 mm (x1)Strong Tape 80 mm x 28 mm (x2) Strong Tape with cushion (x4)
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Overview 34Confidential
4.1.5 Differences between the ModelsSome parts of GT-S80 and GT-S50 differ as shown in Table 4-3. The explanations in this chapter are based on GT-S80. When reassembling the GT-S50, refer to the table below to make sure the differences between them before disassembling/reassembling.
Table 4-3. Procedure DifferencesParts name GT-S80 GT-S50 Reference page
Ultra Sonic Sensor Mounted
Ultra Sonic Sensor (receiver)
Front of Bottom Cover
Ultra Sonic Sensor (transmitter)
Bottom of Top unit
Not mounted
Front of Bottom Cover
Bottom of Top unit
See "4.2.9 Ultra Sonic RX Board/ Ultra Sonic Sensor (Receiver) (GT-S80 only)" (p56).See "4.2.16 Ultra Sonic TX Board/Ultra Sonic Sensor (transmitter)" (p71).
Ultra Sonic RX Board Mounted Not mounted See "4.2.9 Ultra Sonic RX Board/ Ultra Sonic Sensor (Receiver) (GT-S80 only)" (p56).
RX harness Mounted Not mounted See "4.2.5 Top unit" (p44).See "4.2.7 Bottom Cover" (p51).See "4.2.9 Ultra Sonic RX Board/ Ultra Sonic Sensor (Receiver) (GT-S80 only)" (p56).
Panel wire Mounted Not mounted See "4.2.5 Top unit" (p44).See "4.2.13 Front Cover/LCM Board/Display Cover" (p63).
Main Board Assy Connector (J8): Yes Connector (J8): N/A See "4.2.6 Main Board Assy" (p49).
Shield Cover: Yes Shield Cover: N/A
Transceiver harness Branching connectors on the Main Board Assy: three pieces
Branching connectors on the Main Board Assy: two pieces
See "4.2.5 Top unit" (p44).See "4.2.6 Main Board Assy" (p49).
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 35Confidential
4.2 Disassembly ProcedureThis section illustrates how to remove the main components of this product. Unless otherwise specified, the reassembly procedure is the reverse of the disassembly procedure. For additional assembly illustrations, refer to the exploded diagrams in the Appendix. The following flowchart shows the disassembly procedure step-by-step. When disassembling each unit, refer to the corresponding section and page number where the procedure is described.
CHECKPOINT
Since a prototype was used to illustrate these disassembly and reassembly procedures, the appearance of some parts may differ from those on actual product. The procedures themselves, however, are accurate for the retail model.The parts surrounded with dotted line are not the shortest ways of removing them, but you need to remove the parts/units if they exist on the way to the target part/unit.
To Figure 4-10 "Disassembly Flowchart (2) (p 36)"
"4.2.3 Switch Holder/ DC Cable Connector (p40)"
"4.2.4 Base Cover/Switch Harness/Foot
(p42)"
Start
"4.2.1 Input Tray Assy (p37)"
"4.2.1 Input Tray Assy (p37)"
"4.2.2 Separator Module/Paper Feed Roller/
Separation Pad (p37)"
Figure 4-9. Disassembly Flowchart (1)
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CHECKPOINT
Disassembling procedures for GT-S80 and GT-S50 are basically the same, but the colored blocks contain the parts not mounted on GT-S50 or have differences on GT-S50.Since a prototype was used to illustrate these disassembly and reassembly procedures, the appearance of some parts may differ from those on actual product. The procedures themselves, however, are accurate for the retail model.The parts surrounded with dotted line are not the shortest ways of removing them, but you need to remove the parts/units if they exist on the way to the target part/unit.When replacing the Ultra Sonic Sensor, it is recommended to replace both of the transmitter on the Top unit and the receiver on the Bottom Cover. This is because it is impossible to know or detect which Ultra Sonic Sensor (Transmitter or Receiver) is faulty. (GT-S80 only)
"4.2.6 Main Board Assy (p49)" "4.2.5 Top unit (p44)" "4.2.8 Carriage Assy
(Bottom) (p53)"
"4.2.17 Metal Frame Assy (p73)"
"4.2.7 Bottom Cover (p51)"
"4.2.10 Door Sensor (p59)"
"4.2.11 Bottom Cover Mylar/Edge Guide
(p60)"
"4.2.12 Hinge Cover (p62)"
"4.2.13 Front Cover/LCM Board/Display
Cover (p63)"
"4.2.14 Carriage Assy (Top) (p69)"
"4.2.15 Paper Path Sensor (p70)"
"4.2.18 Top Cover Assy (p74)"
From Figure 4-9 "Disassembly Flowchart (1) (p 35)"
"4.2.8 Carriage Assy (Bottom) (p53)"
"4.2.5 Top unit (p44)"
Disassembling the Top unit
"4.2.9 Ultra Sonic RX Board/ Ultra Sonic Sensor (Receiver) (GT-S80 only)
(p56)"
"4.2.16 Ultra Sonic TX Board/Ultra Sonic Sensor
(transmitter) (p71)"
"4.2.9 Ultra Sonic RX Board/ Ultra Sonic Sensor (Receiver) (GT-S80 only)
(p56)"
"4.2.7 Bottom Cover (p51)"
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 36Confidential
Figure 4-10. Disassembly Flowchart (2)
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 37Confidential
4.2.1 Input Tray AssyParts/Components must be removed in advance None
Disassembly Procedure
Hole & Dowel
Input Tray Assy
1. Open the Input Tray Assy.2. Release the two dowels on the Input Tray Assy from the two holes on the
scanner, and remove the Input Tray Assy.
Figure 4-11. Removing the Input Tray Assy
4.2.2 Separator Module/Paper Feed Roller/Separation Pad
Parts/Components must be removed in advance None
Disassembly Procedure
SEPARATOR MODULE/PAPER FEED ROLLER
Top unit
Input Tray Assy
Lock of Top unit
1. Open the Input Tray Assy.2. Unlock the Top unit, and open it.
Figure 4-12. Removing the Separator Module (1)
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Dowel
Separator Module
Hook
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 38Confidential
3. Disengage the two hooks on the Separate Module, and open the Separate Module. (See Figure 4-13.)
4. Release the two dowels on the Separate Module, and remove the Separate Module from the scanner.
Figure 4-13. Removing the Separator Module (2)
Do not touch or damage the roller when removing the Paper Feed Roller.
Paper Feed Roller
5. Slide the Paper Feed Roller to the right as seen from the front, and remove the Paper Feed Roller from the scanner.
Figure 4-14. Removing the Paper Feed Roller
CAUTION
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When installing the Paper Feed Roller, first align the protrusion to the left as seen from the front, then attach the Paper Feed Roller.
Paper Feed Roller
Protrusion
Figure 4-15. Installing the Paper Feed Roller
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 39Confidential
SEPARATION PAD
Hook
Separation Pad
1. Open the Input Tray Assy.2. Unlock the Top unit, and open it. (See Figure 4-12.)3. Disengage the hook of the Separation Pad, and remove the Separation Pad
from the Top unit.
Figure 4-16. Removing the Separation Pad
REASSEMBLY
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When installing the Separation Pad, first align the two grooves on the lower part of the pad with the shaft of the Top unit, then attach the Separation Pad.
Groove
Separation Pad
Figure 4-17. Installing the Separation Pad
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 40Confidential
4.2.3 Switch Holder/ DC Cable ConnectorParts/Components must be removed in advance None
Disassembly Procedure
In the next step, make sure to place a cloth or the like to prevent damaging the external part.
C.P.F.P. 3x8 (black) (6.0-6.5 Kgfcm)
Base Cover
Switch Holder
RibHook
1. Place the scanner upside down.2. Remove the two screws that secure the Switch Holder.3. Disengage the two hooks and the four ribs of the Switch Holder, and detach
the Switch Holder.
Figure 4-18. Removing the Switch Holder (1)
REASSEMBLY
CAUTION
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Rib
DC Cable connector
Main Board Assy J2
Switch Holder
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 41Confidential
4. Release the DC Cable from the three ribs on the Switch Holder and the rib on the main body. (See Figure 4-19.)
5. Disconnect the DC Cable from the connector (J2) on the Main Board Assy. (See Figure 4-19.)
6. Slide the DC Cable connector in the direction of the arrow, and remove the DC Cable from the groove on the Switch Holder.
Figure 4-19. Removing the Switch Holder (2)
J1
Main Board Assy
RibSwitch Holder
Switch Harness
7. Release the Switch Harness from the four ribs on the Switch Holder and the rib on the main body, and remove the Switch Holder. (See Figure 4-20.)
8. Disconnect the Switch Harness from the connector (J1) on the Main Board Assy.
Figure 4-20. Removing the Switch Holder (3)
OK NG
Figure 4-21. Installing the DC Cable Connector
REASSEMBLY When routing the DC Cable and the Switch Harness; because the ribs have only a narrow gap in between, insert the cable one by one. (See Figure 4-19, Figure 4-20.)When attaching the DC Cable connector, make sure to insert the connector firmly into the hole on the Switch Holder.
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 42Confidential
4.2.4 Base Cover/Switch Harness/FootParts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)
Disassembly Procedure
In the next step, make sure to place a cloth or the like to prevent damaging the external part.
Base Cover
Foot
C.P.F.S. 3x6 (black) (6.0-6.5 Kgfcm)Foot
Bottom
1. Place the scanner upside down.2. Remove the four screws that secure the Base Cover.
Figure 4-22. Removing the Base Cover (1)
HookBase Cover
Figure 4-23. Locations of the hook on the Base Cover
Hole
Base Cover
Flathead screwdriver
Rear
3. Insert a flathead screwdriver into the two holes at the rear of the scanner, and remove the Base Cover while extending the Base Cover outwards.
Figure 4-24. Removing the Base Cover (2)
CAUTION
CAUTION In the next step, make sure to wrap the flathead screw driver with a cloth or the like to avoid scratching the Base Cover.When removing the Base Cover, take care not to damage the seven hooks on the Base Cover because they are very fragile.
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Switch Harness
Hook
DowelRibPoint A
Base Cover
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 43Confidential
4. Disengage the two hooks of the Switch Harness from inside the Base Cover, and remove the Switch Harness from the Base Cover.
Figure 4-25. Removing the Switch Harness
Metal Frame Assy
Hole
Bottom
Figure 4-26. Installing the Base Cover (1)
Do not catch harnesses.
Front
Figure 4-27. Installing the Base Cover (2)
REASSEMBLY When installing the Base Cover, align the dowel and the two ribs on the Base Cover with the holes on the Metal Frame Assy. (See Figure 4-25, Figure 4-26.)
When installing the Base Cover, make sure not to catch the harnesses on the left and right Hinge Covers between the covers and the Points A (Figure 4-25) of the Base Cover.
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 44Confidential
4.2.5 Top unitParts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)
Top unit
Figure 4-28. Configuration of the Top unit
In the next step, avoid damaging the Anti-Static Brush when working. Please handle with care.
Anti-Static brush
Top unit
Backside of Top unit
Figure 4-29. Anti-Static brush
CHECKPOINT
Unless otherwise specified, this section describes the procedures for GT-S80. The differences that may affect the disassembly/reassembly procedures of GT-S50 will be provided in "4.1.5 Differences between the Models (p34)".The Top unit removed here comprises the following parts. • Hinge Cover (p62) • Front Cover/LCM Board/Display Cover (p63) • Carriage Assy (Top) (p69) • Paper Path Sensor (p70) • Ultra Sonic TX Board/Ultra Sonic Sensor (transmitter)
(p71) • Top Cover Assy (p74)
CAUTION
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 45Confidential
Disassembly Procedure
1. Disconnect the harnesses below from the connectors on the Main Board Assy. (See Figure 4-30.)
Top digital harness (J4)
Top analog harness (J5)
Transceiver harness (J8*, J14, J15) *GT-S80 only
Metal clamp
Top analog harness
Top digital harness
Transceiver harness
Main Board Assy
C.P.F.S. 3x6 (black) (6.5-7.0 Kgfcm)
Rear side
2. Remove the screw at the rear of the scanner, and remove the metal clamp that secures the Transceiver harness.
Figure 4-30. Removing the Top unit (1)
Clamp ATop analog harness
Top digital harnessClamp B
Grounding wire of top analog harness
Grounding wire of top digital harness
C.P.F.S. 3x6 (black) (6.5-7.0 Kgfcm)
Right side
3. Remove the screw on the right side as seen from the front of the scanner, and release two grounding wires for the top digital harness and top analog harness. (See Figure 4-31.)
4. Release the top analog harness from the clamp A and clamp B at the rear of the scanner. (See Figure 4-31.)
5. Release the top digital harness from the clamp B at the rear of the scanner.
Figure 4-31. Removing the Top unit (2)
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In the next step, make sure to place a cloth or the like to prevent damaging the external part.
Top digital harness
Clamp D
Clamp C
Top analog harness
Bottom
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 46Confidential
6. Place the scanner upside down.7. Release the top digital harness and the top analog harness from the clamp C
and clamp D on the bottom of the scanner.
Figure 4-32. Removing the Top unit (3)
Panel wire (GT-S80 only)
Relay connector (GT-S80 only)
RX harness (GT-S80 only)
Clamp E
Transceiver harness
Clamp F
Grounding wireof RX harness (GT-S80 only)
Grounding wire coming from Top unit
C.P.F.S. 3x6 (black) (6.5-7.0 Kgfcm)
Bottom
8. Remove the screw that secures the grounding wire of RX harness (GT-S80 only) and the grounding wire coming from the Top unit, and detach the wires. (See Figure 4-33.)
9. [GT-S80 only] Disconnect the relay connector connecting the RX harness and the panel wire. (See Figure 4-33.)
10. Release the transceiver harness from the clamp E and clamp F on the bottom of the scanner.
Figure 4-33. Removing the Top unit (4)
CAUTION
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Shaft & bearing
Top unit
Metal Frame Assy
Front
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 47Confidential
11. Place the scanner with the bottom down.12. Unlock the Top unit, and open it. (See Figure 4-12.)13. With the Top unit opened fully, slide the Top unit to the front of the scanner,
and disengage both left and right shafts from their bearings on the Metal Frame Assy.
Figure 4-34. Removing the Top unit (5)
Shape of shaft
Top unit
Shaft
Bearing
Right side
Top unit
Shape of shaft
ShaftBearing
Left side
Figure 4-35. Installing the Top unit
REASSEMBLY When installing the Top unit, align the shapes of the shafts and their bearings on both left and right sides before inserting the shafts.
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Grounding wire of top analog harness
Grounding wire of top digital harness
C.P.F.S. 3x6 (black) (6.5-7.0 Kgfcm)
Figure 4-36. Installing the Grounding Wire (1)
Grounding wireof RX harness
Grounding wire coming from Top unit
C.P.F.S. 3x6 (black) (6.5-7.0 Kgfcm)
Figure 4-37. Installing the Grounding Wire (2)
After replacing the Top unit, make the specified adjustments. (See Chapter 5 "ADJUSTMENT")
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 48Confidential
REASSEMBLY When installing the grounding wires of the top digital harness and top analog harness, secure them together with the screw in order of top digital harness and top analog harness.
[GT-S80 only] When installing the grounding wire of the RX harness and the grounding wire coming from the Top unit, secure them together with the screw in order of the one coming from the Top unit and the one of the RX harness.
REASSEMBLY When securing the transceiver harness with the metal clamp, make sure not to catch it between the flat parts of the clamp. (See Figure 4-30.)
ADJUSTMENTREQUIRED
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 49Confidential
4.2.6 Main Board AssyParts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)
Unless otherwise specified, this section describes the procedures for GT-S80. The differences that may affect the disassembly/reassembly procedures of GT-S50 will be provided in "4.1.5 Differences between the Models (p34)".
Disassembly Procedure
Table 4-4. Connectors on the Main Board Assy
CN No. Destination/Harness Name Connector Color Number of pins
J1 Switch Harness White 2
J2 DC Cable Connector White 3
J4 Top digital harness White 26
J5 Top analog harness White 7
J6 Bottom digital harness White 20
J7 Bottom analog harness White 6
J8* Transceiver harness White 2
J10 PF motor White 4
J11 Pickup motorGT-S80:BlackGT-S50:White
4
J13 Door Sensor Black 3
J14 Transceiver harness Blue 5
J15 Transceiver harness White 3
J5 J7
J6
J10
J4 J1 J2
J11
J15
J14
J13
Main Board Assy
GT-S80
GT-S50
J8
J5 J7
J6
J10
J4 J1 J2
J11
J15
J14
J13
Main Board Assy
J10
1. Disconnect all the cables connected to the connectors on the Main Board Assy.
Note * : GT-S80 only
Figure 4-38. Connector position on the Main Board Assy
CHECKPOINT
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[GT-S80 only] When removing the Main Board Assy, do not touch the Shield Cover carelessly. If touching the Shield Cover causes the scanner the following states, make sure to replace the Shield Cover with a new one because the scanner in those states may malfunction when operating due to the influence of the electromagnetic noises. (See Figure 4-39.)
Shield Cover
Point AMain Board Assy
C.P.F.S. 3x6 (black) (6.5-7.0 Kgfcm)
Rear side
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 50Confidential
2. Remove the nine screws that secure the Main Board Assy, and remove the Main Board Assy from the scanner.
Figure 4-39. Removing the Main Board Assy
Main Board Assy Shield Cover
Hole
Figure 4-40. Installing the Shield Cover (GT-S80 only)
Grounding wire of bottom digital harness
Grounding wire of bottom analog harness
C.P.F.S. 3x6 (black) (6.5-7.0 Kgfcm)
Rear side
Figure 4-41. Installing the Grounding Wire
After replacing the Main Board Assy, make the specified adjustments. (See Chapter 5 "ADJUSTMENT")
CAUTION
The Shield Cover has a hole or is ripped.The Shield Cover touches the heat sink on the Main Board Assy.
REASSEMBLY [GT-S80 only] If the Shield Cover is damaged as described in the CAUTION on p 50, replace it with a new one and attach it to cover the four holes on the Main Board Assy.
When installing the Main Board Assy, secure the two grounding wires together with the screw located in the point A shown in Figure 4-39. Secure them in order of the wire of the bottom digital harness and the one of the bottom analog harness.
ADJUSTMENTREQUIRED
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 51Confidential
4.2.7 Bottom CoverParts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)/Top unit (p 44)
Unless otherwise specified, this section describes the procedures for GT-S80. The differences that may affect the disassembly/reassembly procedures of GT-S50 will be provided in "4.1.5 Differences between the Models (p34)".
Disassembly Procedure
Bottom Cover
C.B.S. 3x10 (black) (6.5-7.0 Kgfcm)
1. Disconnect the Door Sensor harness from the connector (J13) on the Main Board Assy. (See Figure 4-38.)
2. Remove the three screws that secure the Bottom Cover.
Figure 4-42. Removing the Bottom Cover (1)
RX harness
Hole on Metal Frame Assy
Bottom Cover
Hook
Metal Frame Assy
Lift it by about 5cm.
3. Disengage the two hooks on the Bottom Cover, and lift the Bottom Cover by about 5 cm. (See Figure 4-43.)
4. Pull out the RX harness from the hole on the Metal Frame Assy (GT-S80 only), and remove the Bottom Cover from the Metal Frame Assy.
Figure 4-43. Removing the Bottom Cover (2)
CHECKPOINT
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Pickup motor
Carriage Assy (Bottom)
To relay connector
Hole on Metal Frame Assy
RX harness
Bottom
Figure 4-44. Installing the Bottom Cover (1)
Groove
Door Sensor harness
Figure 4-45. Installing the Bottom Cover (2)
Bottom Cover
Metal Frame Assy
Hook
Figure 4-46. Installing the Bottom Cover (3)
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 52Confidential
REASSEMBLY [GT-S80 only] When installing the Bottom Cover, insert the RX harness into the hole on the Metal Frame Assy as shown below, and route it between the Pickup motor and the Carriage Assy (Bottom). (See Figure 4-43, Figure 4-44.)
REASSEMBLY When installing the Bottom Cover, route the Door Sensor harness through the groove on the Metal Frame Assy.
When engaging the two hooks to the frame of the Metal Frame Assy, confirm it is firmly secured with a clicking sound.
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 53Confidential
4.2.8 Carriage Assy (Bottom)Parts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)
Disassembly Procedure
In the next step, avoid damaging the Anti-Static Brush when working. Please handle with care. (See Figure 4-29.)
1. Disconnect the following harnesses from the connectors on the Main Board Assy. (See Figure 4-38.)
Top digital harness (J4)
Top analog harness (J5)
PF motor harness (J10)
In the next step, make sure to place a cloth or the like to prevent damaging the external part.
Clamp CClamp DRight
2. Remove the screw on the right side as seen from the front of the scanner, and disconnect two grounding wires for the top digital harness and top analog harness. (See Figure 4-31.)
3. Release the top analog harness from the clamp A and clamp B at the rear of the scanner. (See Figure 4-31.)
4. Release the top digital harness from the clamp B at the rear of the scanner. (See Figure 4-31.)
5. Place the scanner upside down6. Release the top digital harness and the top analog harness from the clamp C
and clamp D on the bottom of the scanner. (See Figure 4-32.)
7. Disengage the hooks of the clamp C, D using the long-nose pliers, and remove the clamp C and clamp D.
Figure 4-47. Removing the Carriage Assy (Bottom) (1)
Tensioner
Extension spring
C.P.(S-P1) 3x6 (6.5-7.0 Kgfcm)
Right
8. Loosen the screw that secures the tensioner on the right as seen from the front of the scanner. (See Figure 4-48.)
9. Detach the extension spring from the tensioner using the long-nose pliers.
Figure 4-48. Removing the Carriage Assy (Bottom) (2)
CAUTION
CAUTION
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Timing Belt
Pinion gear of PF motor
Right
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 54Confidential
10. Detach the timing belt from the pinion gear of the PF motor.
Figure 4-49. Removing the Carriage Assy (Bottom) (3)
Do not damage the pinion gear when removing the PF motor.
Pinion gear
Hole
PF motor
C.B.S. 3x6 (6.5-7.0 Kgfcm)
Right
11. Remove the two screws that secure the PF motor, and remove the PF motor while avoiding hitting the pinion gear to the hole on the Metal Frame.
Figure 4-50. Removing the Carriage Assy (Bottom) (4)
Bottom analog harness
Bottom digital harness
Clamp GBottom
12. Release the bottom digital harness and the bottom analog harness from the clamp G.
Figure 4-51. Removing the Carriage Assy (Bottom) (5)
CAUTION
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Carriage Assy (Bottom)
Metal Frame Assy
C.P.F.S. 3x12 (7.0-7.5 Kgfcm)
Bottom
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 55Confidential
13. Remove the four screws that secure the Carriage Assy (Bottom), and detach the Carriage Assy (Bottom) from the Metal Frame Assy.
Figure 4-52. Removing the Carriage Assy (Bottom) (6)
14. Disconnect the following harnesses from the connectors on the Carriage Assy (Bottom), and remove the Carriage Assy (Bottom).
Bottom digital harness (J2, J5)
Bottom analog harness (J3)
FFC
Bottom analog harness
Bottom digital harness
Carriage Assy (Bottom)
Glass surface
J3
J5J2
Figure 4-53. Removing the Carriage Assy (Bottom) (7)
CAUTION When removing the Carriage Assy, make sure not to put any scratches or dirt on the glass surfaces. (See Figure 4-53.)When removing the Carriage Assy (Bottom), take care not to disconnect or damage the FFC of the Carriage Assy (Bottom). (See Figure 4-53.)
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PF motor
Clamp HConnector
Figure 4-54. Installing the PF motor
1. Attach the timing belt on to the pinion gear of the PF motor. (See Figure 4-49.)
2. Attach the extension spring to the tensioner using the long-nose pliers. (See Figure 4-48.)
3. Tighten the screw to secure the tensioner. (See Figure 4-48.)
After replacing the Carriage Assy (Bottom), make the specified adjustments. (See Chapter 5 "ADJUSTMENT")
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 56Confidential
4.2.9 Ultra Sonic RX Board/ Ultra Sonic Sensor (Receiver) (GT-S80 only)
Parts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)/Top unit (p 44)/Bottom Cover (p 51)/
Disassembly Procedure
When removing the Ultra Sonic RX Board/Ultra Sonic Sensor (Receiver), do not touch the Shield Cover. If touching the Shield Cover causes a hole or a tear on it, it is necessary to replace the Shield Cover with a new one because the scanner in those states may malfunction when operating due to the influence of the electromagnetic noises. (See Figure 4-60.)
C.B.P. 3x6 (black) (4.5-5.0 Kgfcm)
GroovePositioning hole & dowel
Bottom Cover
Ultra Sonic RX Board
RX harness
Shield Cover
1. Remove the screw that secures the Ultra Sonic RX Board, and detach the Ultra Sonic RX Board from the Bottom Cover.
Figure 4-55. Removing the Ultra Sonic RX Board (1)
REASSEMBLY When installing the Carriage Assy (Bottom), take care not to disconnect or damage the FFC of the Carriage Assy (Bottom). (See Figure 4-53.)When installing the PF motor, route the PF motor harness through the clamp H. (See Figure 4-54.)When installing the PF motor, attach it with the connector of the motor in the location shown below.
Secure the PF tensioner as follows:
ADJUSTMENTREQUIRED
CAUTION
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 57Confidential
2. Disconnect the following harnesses from the connectors on the Ultra Sonic RX Board, and remove the Ultra Sonic RX Board.
Ultra Sonic Sensor (J1)
RX harness (J2)
Ultra Sonic Sensor
Ultra Sonic RX Board RX harness
Figure 4-56. Removing the Ultra Sonic RX Board (2)
Shield plate R/BBottom Cover C.B.P. 3x6 (black) (4.5-5.0 Kgfcm)
3. Remove the two screws that secure the Shield plate R/B, and remove the Shield plate R/B from the Bottom Cover.
Figure 4-57. Removing the Ultra Sonic Sensor (1)
Ultra Sonic Sensor
Bottom CoverGroove
Bottom Cover
4. Remove the Ultra Sonic Sensor from the Bottom Cover.
Figure 4-58. Removing the Ultra Sonic Sensor (2)
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OK NGUltra Sonic Sensor Ultra Sonic Sensor
Figure 4-59. Installing the Ultra Sonic Sensor
Standard Line
Shield plate R/B
Shield Cover
Figure 4-60. Installing the Shield Cover
GroovePoint B
Shield plate R/B
RX harness
Grounding wire of RX harness
Figure 4-61. Routing the RX harness
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 58Confidential
REASSEMBLY When installing the Ultra Sonic Sensor, make sure to confirm it is attached correctly as shown below.
If the Shield Cover is damaged; ripped or has holes, when replacing the Ultra Sonic RX Board and/or Ultra Sonic Sensor, replace it with a new one and attach it while aligning it with the standard line on the Shield plate R/B.
When installing the Ultra Sonic Sensor, route the harness of it through the groove on the Bottom Cover. (See Figure 4-58.)
REASSEMBLY When installing the Shield plate R/B, screw together the grounding wire of the RX harness with the screw located in the point B, and route the RX harness through the groove on the Bottom Cover.
When installing the Ultra Sonic RX board, route the RX harness through the groove on the Bottom Cover. (See Figure 4-55.)When installing the Ultra Sonic RX board, align the dowel on the Bottom Cover with the positioning hole on the Ultra Sonic RX board. (See Figure 4-55.)
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TH RH
Ultra Sonic TX Board (p 71)
Top Cover Assy (p 74) Bottom Cover (p 51)
Ultra Sonic RX Board (p 56)
Transmitter Receiver
Figure 4-62. Installing the Ultra Sonic Sensor
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 59Confidential
4.2.10 Door SensorParts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)/Top unit (p 44)/Bottom Cover (p 51)/
Disassembly Procedure
Door Sensor
Bottom Cover
Rib
C.B.P. 3x8 (black) (4.5-5.0 Kgfcm)
1. Remove the screw that secures the Door Sensor, remove the Door Sensor from the Bottom Cover.
Figure 4-63. Removing the Door Sensor
When installing the Door Sensor, route the harness of Door Sensor through the rib on the Bottom Cover. (See Figure 4-63.)
REASSEMBLY When replacing the Ultra Sonic Sensor, it is recommended to replace both the transmitter and receiver with a new one. The sensors set as an ASP have markings on them; “TH” for transmitter and “RH” for receiver. Make sure to install the correct sensors to the correct locations as shown below.
REASSEMBLY
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 60Confidential
4.2.11 Bottom Cover Mylar/Edge GuideParts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)/Top unit (p 44)/Bottom Cover (p 51)/
Disassembly Procedure
Bottom Cover Mylar
Bottom Cover
Back of Bottom Cover
1. Remove the Bottom Cover Mylar from the Bottom Cover using a Tweezer.
Figure 4-64. Removing the Bottom Cover Mylar
Edge Guides
2. Slide the Edge Guides to both ends.
Figure 4-65. Removing the Edge Guide (1)
Edge Guide Rack Hook
Back of Bottom Cover
3. Open the four hooks on the Edge Guide Rack to disengage the hooks, and slide the two Edge Guides in the direction of the arrows.
Figure 4-66. Removing the Edge Guide (2)
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Edge Guide
Top of Bottom Cover
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 61Confidential
4. Pull out the two Edge Guides in the direction of the arrows to remove them.
Figure 4-67. Removing the Edge Guide (3)
Spur gear
Edge Guide Rack
C.P.F.P. 3x8 (black) (4.5-5.0 Kgfcm)
Back of Bottom Cover
5. Remove the screw that secures the spur gear, and remove the spur gear. (See Figure 4-68.)
6. Remove the two Edge Guide Racks from the Bottom Cover.
Figure 4-68. Removing the Edge Guide Rack
Edge Guide Rack
Spur gear
Figure 4-69. Installing the Edge Guide Rack
REASSEMBLY When installing the spur gear, make sure to attach it while setting the two Edge Guide Racks in the middle.
When installing the two Edge Guides, insert them until they click with the two hooks on the Edge Guide Rack to secure them firmly. (See Figure 4-66.)When replacing the two Edge Guides, be sure of the following: • No abnormal noise by sliding them 2 to 3 times from side to
side. • Slide smoothly. • Open and close by even intervals on both the right side and
left side.
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Double-sided tape
Top
Bottom
Bottom Cover Mylar
Rear of Bottom Cover Mylar
Figure 4-70. Installing the Bottom Cover Mylar
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 62Confidential
4.2.12 Hinge CoverParts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)/Top unit (p 44)
Disassembly Procedure
In the next step, avoid damaging the Anti-Static Brush when working. Please handle with care. (See Figure 4-29.)
Hinge Cover
Top unit
C.B.P. 3x10 (black) (4.5-5.0 Kgfcm)
1. Remove the two screws that secure the two Hinge Covers, and remove the two Hinge Covers.
Figure 4-71. Removing the Hinge Cover
REASSEMBLY When installing the Bottom Cover Mylar, attach double-sided tape as shown below, and attach the Bottom Cover Mylar aligning it with the edge of the Bottom Cover. (See Figure 4-64.) Replace the Bottom Cover Mylar, if necessary.
CAUTION
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When installing the Hinge Cover, insert the point A and B of the Top unit into the two holes of the Hinge Cover, and make sure not to catch the harnesses when attaching it.
HolePoint APoint B
Hinge CoverRight
Hinge Cover
HolePoint APoint B
Left
Figure 4-72. Installing the Hinge Cover
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 63Confidential
4.2.13 Front Cover/LCM Board/Display CoverParts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)/Top unit (p 44)/Hinge Cover (p 62)
Unless otherwise specified, this section describes the procedures for GT-S80. The differences that may affect the disassembly/reassembly procedures of GT-S50 will be provided in "4.1.5 Differences between the Models (p34)".
Disassembly Procedure
In the next step, avoid damaging the Anti-Static Brush when working. Please handle with care. (See Figure 4-29.)
Top unit
C.B.P. 3x10 (black) (4.5-5.0 Kgfcm)
1. Remove the seven screws that secure the Front Cover.
Figure 4-73. Removing the Front Cover (1)
REASSEMBLY
CHECKPOINT
CAUTION
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In the next steps, be careful to remove the Front Cover because it is connected to the main body of the Top unit with harnesses.
Front Cover
Main body of Top unit
Figure 4-74. Removing the Front Cover (2)
Front Cover
Lock of Top unit
Hole
Hook
EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 64Confidential
2. Remove the the Front Cover by opening from the front side. Release the two hooks on the upper side of the Front Cover while drawing out the lock of the Top unit from the hole of the upper side of the Front Cover.
Figure 4-75. Removing the Front Cover (3)
CAUTION
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J2
LCM Board
Panel wire
Hole
Front Cover
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 65Confidential
3. Pull out the panel wire from the hole of the Top unit. (See Figure 4-76.)4. Remove the panel wire from the groove of the Front Cover, and disconnect
the panel wire from the connector (J2) on the LCM Board. (See Figure 4-76, Figure 4-81.)
Figure 4-76. Removing the Front Cover (4)
Ferrite core
Groove
J4
LCM Board
Front Cover
Top digital harness
C.P.F.P. 3x8 (4.5-5.0 Kgfcm)
5. Remove the screw that secures the top digital harness. (See Figure 4-77.)6. Disconnect the top digital harness from the connector (J4) on the LCM Board,
and remove the Front Cover.
Figure 4-77. Removing the Front Cover (5)
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Positioning hole & dowel
LCM Board Front Cover
C.B.P. 3x8 (black) (4.5-5.0 Kgfcm)
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 66Confidential
7. Remove the six screws that secure the LCM Board, and remove the LCM Board from the Front Cover.
Figure 4-78. Removing the LCM Board Point A
Display CoverFront CoverBottom
Double-sided tape
Display CoverTop
8. Push the point A of the Display Cover from the bottom side of the Front Cover to remove the Display Cover.
Figure 4-79. Removing the Display Cover
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Tray sensor
LCM Board
Sensor leverTray sensor
Figure 4-80. Installing the LCM Board
Front Cover Panel wire
Groove
Figure 4-81. Routing the panel wire
1. Route the top digital harness through the two grooves of the Front Cover.
2. Set the ferrite core as shown in Figure 4-77.3. Secure the top digital harness with the screw.
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 67Confidential
REASSEMBLY When installing the LCM Board, align the two dowels of the Front Cover with the two positioning holes of the LCM Board. (See Figure 4-78.)When installing the LCM Board, insert the leg of sensor lever between the space of the tray sensor (S11) on the LCM Board.
REASSEMBLY When installing the Front Cover, route the panel wire through the four grooves on the Front Cover.
When installing the Front Cover, route the top digital harness as follows. (See Figure 4-77.)
When attaching the Display Cover, align it with the concave of the Front Cover and secure it with double-sided tape as shown in Figure 4-79.
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Main body of Top unit
Front CoverTop digital harness
Figure 4-82. Installing the Front Cover (1)
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 68Confidential
7
OK
Decoration panel
Front Cover
NG
Decoration panelGap
Front Cover
Decoration panel
Front Cover
Figure 4-83. Installing the Front Cover (2)
REASSEMBLY When installing the Front Cover, be careful not to catch the top digital harness shown below between the Front Cover and the main body of the Top unit.
REASSEMBLY After installing the Front Cover, confirm that there is no gap between the Front Cover and the decoration panel because of routing the harnesses
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EPSON GT-S80/S50 Revision B
DISASSEMBLY / ASSEMBLY Disassembly Procedure 69Confidential
4.2.14 Carriage Assy (Top)Parts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)/Top unit (p 44)/Hinge Cover (p 62)/Front Cover (p 63)
Disassembly Procedure
In the next step, avoid damaging the Anti-Static Brush when working. Please handle with care. (See Figure 4-29.)
1. Disconnect the following harness from the connector on the Carriage Assy (Top).
Top digital harness (J2, J5)
Top analog harness (J3)
Carriage Assy (Top)
Top analog harness
Top digital harness
Figure 4-84. Removing the Carriage Assy (Top) (1)
When removing the Carriage Assy, do not damage or contaminate the glass surface.
Carriage Assy (Top)
C.B.P. 3x8 (black) (7.0-7.5 Kgfcm)
2. Remove the four screws that secure the Carriage Assy (Top), and remove the Carriage Assy (Top).
Figure 4-85. Removing the Carriage Assy (Top) (2)
CAUTION
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When installing the Carriage Assy (Top), route the top analog harness and the top digital harness as follows.1. Connect the top analog harness to the connector on the board of
the Carriage Assy (Top). (See Figure 4-86.)2. Route the top analog harness through the two grooves and the
hook of the Top unit.
J3
GrooveHookTop analog harness
Figure 4-86. Routing the top analog harness3. Route the top digital harness through the hook of the Top unit.
(See Figure 4-87.)4. Connect the top digtial harness to the connector (J2,J5) on the
board of the Carriage Assy (Top).
J2J5
Hook
Top digital harness
Figure 4-87. Routing the top digital harness
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4.2.15 Paper Path SensorParts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)/Top unit (p 44)/Hinge Cover (p 62)/Front Cover (p 63)/Carriage Assy (Top) (p 69)
Disassembly Procedure
In the next step, avoid damaging the Anti-Static Brush when working. Please handle with care. (See Figure 4-29.)
J4
Ultra Sonic TX Board
Paper Path Sensor
Top Cover Assy Sensor lever
Hook
1. Disconnect the cable of the Paper Path Sensor from the connector (J4) on the Ultra Sonic TX Board. (See Figure 4-88.)
2. Release the two hooks of the Top Cover Assy, and remove the Paper Path Sensor from the Top Cover Assy.
Figure 4-88. Removing the Paper Path Sensor
After installing the Paper Path Sensor, check if the sensor lever moves smoothly. (See Figure 4-88.)
REASSEMBLY
CAUTION
REASSEMBLY
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 71Confidential
4.2.16 Ultra Sonic TX Board/Ultra Sonic Sensor (transmitter)Parts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)/Top unit (p 44)/Hinge Cover (p 62)/Front Cover (p 63)/Carriage Assy (Top) (p 69)
Unless otherwise specified, this section describes the procedures for GT-S80. The differences that may affect the disassembly/reassembly procedures of GT-S50; which the Ultra Sonic Sensor is not mounted, will be provided in "4.1.5 Differences between the Models (p34)".
Disassembly Procedure
In the next step, avoid damaging the Anti-Static Brush when working. Please handle with care. (See Figure 4-29.)
1. Disconnect the following harnesses from the Ultra Sonic TX Board.Ultra Sonic Sensor (J1)Paper Path Sensor (J4)Paper Detect sensor (J3)Transceiver harness (J2)
Ultra Sonic TX Board
Paper Detect sensor
Paper Path Sensor
Ultra Sonic Sensor
Transceiver harness
Figure 4-89. Removing the Ultra Sonic TX Board (1)
Ultra Sonic TX BoardPositioning hole & dowel
C.P.F.P. 3x8 (4.5-5.0 Kgfcm)
2. Remove the screw that secures the Ultra Sonic TX Board, and remove the Ultra Sonic TX Board.
Figure 4-90. Removing the Ultra Sonic TX Board (2)
Ultra Sonic Sensor
Sensor lever
GrooveHook
3. Release the two hooks of the Top Cover Assy and remove the Ultra Sonic Sensor from the Top Cover Assy.
Figure 4-91. Removing the Ultra Sonic Sensor
CHECKPOINT
CAUTION
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OK NGUltra Sonic Sensor Ultra Sonic Sensor
Figure 4-92. Installing the Ultra Sonic Sensor
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 72Confidential
REASSEMBLY When installing the Ultra Sonic Sensor, make sure to confirm it is attached correctly as shown below.
When installing the Ultra Sonic Sensor, make sure of the following. (See Figure 4-91.) • Route the harness of the Ultra Sonic Sensor not to leave any
slack around the two grooves on the Top Cover Assy. • Make sure not to let the harness of the Ultra Sonic Sensor
touch the sensor lever.When replacing the Ultra Sonic Sensor, it is recommended to replace both the transmitter and receiver with a new one. The sensors set as an ASP have markings on them; “TH” for transmitter and “RH” for receiver. Make sure to install the correct sensors to the correct locations as shown in Figure 4-62.When installing the Ultra Sonic TX Board, align the two dowels of the Top Cover Assy with the two positioning holes of the Ultra Sonic TX Board. (See Figure 4-90.)
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 73Confidential
4.2.17 Metal Frame AssyParts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)/Main Board Assy (p 49)/Carriage Assy (Bottom) (p 53)/Top unit (p 44)/Bottom Cover (p 60)
Disassembly Procedure
Clamp H
Bottom analog harness
Bottom digital harness
Clamp A
Metal Frame Assy
Rear
1. Release the bottom digital harness from the clamp H, and remove it from the Metal Frame Assy.
2. Release the Bottom Analog Harness from the clamp A and H, and remove it from the Metal Frame Assy.
Figure 4-93. Removing the Metal Frame Assy
When replacing the Metal Frame Assy, the PF motor has to be removed when assembling the Carriage Assy (Bottom). To install the PF motor, see 4.2.8 Carriage Assy (Bottom) (p53).
REASSEMBLY
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DISASSEMBLY / ASSEMBLY Disassembly Procedure 74Confidential
4.2.18 Top Cover AssyParts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)/Top unit (p 44)/Hinge Cover (p 62)/Front Cover (p 63)/Carriage Assy (Top) (p 69)/Paper Path Sensor (p 70)/Ultra Sonic TX Board/Ultra Sonic Sensor (p 71)
Disassembly Procedure
In the next step, avoid damaging the Anti-Static Brush when working. Please handle with care. (See Figure 4-29.)
Top Cover Assy
Decoration panel
Hook
1. Release the eight hooks of the decoration panel, and remove the decoration panel from the Top Cover Assy.
Figure 4-94. Removing the Top Cover Assy (1)
2. Remove the following parts from the Top Cover Assy.
Top digital harness
Top analog harness
Transceiver harness
Grounding wire
Grounding wire
Top Cover Assy
Top analog harness
Top digital harness
Transceiver harness
Figure 4-95. Removing the Top Cover Assy (2)
CAUTION
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Grounding wire
Point AGroove
Anti-Static brush
Tip of grounding wire
Bottom of Top Cover Assy
Grounding wire
Transceiver harness
Groove
Front of Top Cover Assy
Figure 4-96. Routing the transceiver harness
Paper Path Sensor
Paper Detect Sensor
Figure 4-97. Sensor Lever
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REASSEMBLY When reassembling the Top Cover Assy, route the transceiver harness through the groove on the Top Cover Assy. (See Figure 4-96.)Route the grounding wire through the three grooves shown below, and insert the tip of it between the Anti-Static brush and Top Cover Assy (Point A).
For the routing of the Top Digital Harness and Top Analog Harness, see Figure 4-86, Figure 4-87.
REASSEMBLY Confirm smooth movement of Paper Detect Sensor and Paper Path Sensor by pushing the levers after assembly.
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EPSON GT-S80/S50 Revision B
ADJUSTMENT Adjustment Items and Overview 77Confidential
5.1 Adjustment Items and OverviewThis chapter describes how to carry out the adjustments which are required after disassembly / assembly.
The user interface of Adjustment Program for GT-S80/50 is different from traditional models, see 5.2.2 How to Use Adjustment Program (P79) for the details to carry out adjustments.
5.1.1 List of Adjustment ItemsThe following tables indicate the adjustment items necessary for this product.
Table 5-1. Adjustment Items
Adjustment Item Purpose Method Outline Tool
Reading and writing EEPROM data
When the Main Board needs to be replaced, use this to copy the data stored in the EEPROM on the old Main Board; such as scanner operation information, to the new board.
Reads out the EEPROM data using Adjustment Program from the Main Board before removing it. When copying the data to the EEPROM, save the data as a file and read it again from the file after replacing the boards, then write the data to the EEPROM on the new board.
Shading adjustmentPerforms the adjustment after replacing/disassembling the specific parts to execute the shading correction of the scanner.
Writes the adjustment value to the EEPROM by scanning the Shading Chart using Adjustment Program.
Find Edge AdjustmentAdjusts to reading stating position for main scanning or sub scanning after replacing the specific parts.
Writes the adjustment value to the EEPROM by scanning the Find Edge Chart using Adjustment Program.
Firmware version check Checks the firmware version. Reads out the firmware version using Adjustment Program.
Firmware updateMain board
Updates firmware of the Main Board. Updates firmware using Adjustment Program.
PanelUpdates firmware related to the panel display. Updates firmware using Adjustment Program.
CHECKPOINT
• Adjustment Program
• Adjustment Program • Shading Chart
(ASP code: 1509577)
• Adjustment Program • Testing Chart
(ASP code: 1509578)
• Adjustment Program
• Adjustment Program • Latest firmware of the Main
Board
• Adjustment Program • Latest firmware of the Panel
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ADJUSTMENT Adjustment Program Overview 78Confidential
5.1.2 Required Adjustments after Removing/Replacing Parts
The table below lists the required adjustments depending upon the parts being removed or replaced.
Table 5-2. Adjustment Items of Replacement Parts
Adjustment Item
Replacement Part
EEPROMData Copy
Shading Adjustment
Find Edge Adjustment
Main Board Removal --- --- ---Replacement Required Required Required
Top Unit Removal --- Required RequiredReplacement --- Required Required
Carriage Assy (Top / Bottom)
Removal --- --- ---Replacement --- Required Required
Note : “Required”: Adjustment is required, “---”: Adjustment is not required
5.2 Adjustment Program Overview
5.2.1 Operational EnvironmentThe operational environment for this Adjustment Program is as follows:
OS : Windows Vista (32-bit) Windows XP Home/Professional Windows 2000 Professional
I/F : USB 2.0
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5.2.2 How to Use Adjustment Program
The Adjustment Program for GT-S80 and the one for GT-50 are different. Make sure to use the program corresponding to your scanner.
This section describes based on GT-S80, but also applies to GT-S50.
5.2.2.1 File and folder structure of the Adjustment ProgramTo install the Adjustment Program, uncompress the compressed file downloaded from TechExchange to a folder. The folder where the file is uncompressed is as follows:
EEPROM data is saved
Adjustment Program
Save latest firmware for updating to “Panel_FW” folder.
Save latest firmware for updating to “Mainboard_FW” folder.
Figure 5-1. File and Folder Configuration of the Adjustment Program
5.2.2.2 Starting up the Adjustment Program1. Connect GT-S80/50 to the computer with the Adjustment Program installed via a
USB cable.
2. Turn the scanner on and wait until initialization is completed.
3. Double-click on “GT-S80 RMA Tools.exe” or “GT-S50 RMA Tools.exe” and start up the Adjustment Program. (See Figure 5-1.)
4. The main menu of the Adjustment Program is displayed. (See Figure 5-2.) The condition of connecting the scanner can be checked by the icon on the upper left side of the screen.
Scanner is connected with the power on
Scanner is not connectedor the power is off
MainBoard FWbutton (p85)
Panel FWbutton (p86)
F.Shadingbutton (p83)
FindEdgebutton (p84)
EEPROMbutton (p80)
Get FW ver.button (p85)
Exit button
Figure 5-2. Main Menu Screen of the Adjustment Program
5. Select the item to adjust, and carry out necessary adjustment.
CHECKPOINT
GT-S80: GT-S80 RMA Tools.exeGT-S50: GT-S50 RMA Tools.exe
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5.3 Adjustment5.3.1 Reading and Writing EEPROM DataREADING EEPROM DATA
1. Press the “EEPROM” button on the main menu of the Adjustment Program. (See Figure 5-2.)
2. Press the “Read From EEPROM” button on EEPROM menu.
Read From EEPROMbutton (p80)
Write to Filebutton (p81)
Read From Filebutton (p82)
Write to EEPROMbutton (p82)
Cancel button
Status display “EEPROM from File or Machine” is displayed after reading EEPROM data.
12
9
5 1 2 3 46 7 8
10 11 13 14
Figure 5-3. EEPROM Menu Screen
3. The status display (see Figure 5-3.) changes to “Date read from Unit”, and EEPROM data is displayed on EEPROM menu.
Table 5-3. Details of EEPROM Menu Display
No. Displayed Item Details
Note *1 : The unit of the lamp-on time is one minute.*2 : The following are the specification of the scan count
• The scan is counted by one scanning.• The scan is counted as one even if it is cancelled halfway.• The scan aborted due to an error is not counted.
*3 : The number indicates only the times of executed scanning, not the times of paper pass.
*4 : Pick up Roller Count and Separation Pad Count are reset when replacing the consumables; therefore, they are not the same as the accumulative numbers.
*5 : Indicates the number of paper passes including both scanning and feeding.
1 LastErrorCode Error code of the last error
2 Lamp Main On Time*1 Accumulative time of LED lighting for main scanning
3 Lamp Sub On Time*1 Accumulative time of LED lighting for sub scanning
4 ADF Simplex Scan Count*2 *3 Accumulative number of simplex scannings
5 ADF Duplex Scan Count*2 *3 Accumulative number of duplex scannings
6 ADF JAM Count Accumulative number of paper jam errors
7 Fatal Error Count Accumulative number of fatal errors
8 Separation Pad Count*4 *5 Separation Pad Counter
9 Paper Pass Through Count Accumulative number of paper pass
10 Pick up Roller Count*4 *5 Paper Feed Roller Counter
11 Multi Feed Count Accumulative number of multi feed count
12 Model Name Model name
13 First PC Connection Time Show time and date (yyyy/mm/dd) of 1st connection to PC
14 --- Status display
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Table 5-4. Details of Latest Error Code
Error Code Error Item Error Description
SAVING EEPROM DATA
1. Read EEPROM data. (See Reading EEPROM data (P80).)
2. Press “Write to File” button on EEPROM menu. (See Figure 5-3.)
3. The dialog for specifying destination of the file to save is displayed. Select the “EEPROM” folder which is on the same hierarchical level with the Adjustment Program and save the EEPROM data.
Figure 5-4. Saving EEPROM Data as a File
33 Lamp Error (Main Lamp) CR Assy (Bottom) LED error 34 Lamp Error (Sub Lamp) CR Assy (Top) LED error49 ADF Unit Cover Open Top Unit open error54 Paper Jam Paper Jam error
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COPYING EEPROM DATA
When replacing the Main Board, make sure to perform the following adjustments because the adjusted values are not transferred by copying the EEPROM data.
1. Read EEPROM data. (See Reading EEPROM data (P80).)
2. Save EEPROM data as a file. (See saving EEPROM data (P81).)
3. Turn off the scanner, and replace the Main Board with a new one and reasemmbly it. (See 4.2.6 Main Board Assy (P49).)
4. Connect the scanner to the computer. Turn the scanner on and start up the Adjustment Program. (See 5.2.2.2 Starting up the Adjustment Program (P79).)
5. Press the “EEPROM” button on the main menu of the Adjustment Program. (See Figure 5-2.)
6. Press “Read From File” on the EEPROM menu. (See Figure 5-3.)
7. From the “EEPROM” folder, select the EEPROM data which was saved in step3 of saving EEPROM data (P81), and read the EEPROM data.
Figure 5-5. Copying EEPROM Data
8. Press the “Write to EEPROM” button to write the data to EEPROM on the new Main Board when EEPROM data is displayed on the EEPROM menu after the status display (see Figure 5-3) is changed to “Date read from File”. (See Figure 5-3, Figure 5-3.)
CAUTION
5.3.2 Shading Adjustment (P83)5.3.3 Find Edge Adjustment (P84)
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5.3.2 Shading Adjustment
Usage limit of Shading Chart 30 feeds per chart
1. Set the Shading Chart on the Input Tray Assy.
2. Press the “F.Shading” button on the main menu of the Adjustment Program. (See Figure 5-2.)
3. Chart Usage monitoring counter will appear. If counter is less than the limit of 30 times, click on ‘OK’ to proceed with the test. If counter reaches or exceeds 30 times, please change to a new Chart and click on ‘Reset’ to reset the counter to 0.
Note: Shading Adjustment can still be performed even if the usage exceeds the limit. But it is recommended to change a new Chart to ensure accurate Adjustment of scanner unit.
Figure 5-6. Shading Chart Counter Display
4. The scanner starts reading the Shading Chart, and the following message is displayed on the LCD.
Flashing
Figure 5-7. LCD Display While Carrying Out Shading Adjustment
5. When the following message is displayed after the shading adjustment is complete, turn the scanner off and then turn it back on.
Figure 5-8. Shading Adjustment
CHECKPOINT
A Shading Chart is used for this adjustment. Make sure to obtain a Shading Chart which is set as an ASP (ASP code: 1509577) in advance.If the Shading Chart reaches the following limit of usage, replace it with a new one.
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5.3.3 Find Edge Adjustment
Usage limit of Testing Chart 150 feeds per chart
Insert the chart in the direction of the arrow.
Figure 5-9. Find Edge Chart
1. Set Testing Chart on the Input Tray Assy.
2. Press the “FindEdge” button on the main menu of the Adjustment Program. (See Figure 5-2.)
3. Chart Usage monitoring counter will appear. If counter is less than the limit of 150 times, click on ‘OK’ to proceed with the test. If counter reaches or exceeds 150 times, please change to a new Chart and click on ‘Reset’ to reset the counter to 0.
Note: Find Edge Adjustment can still be performed even if the usage exceeds the limit. But it is recommended to change a new Chart to ensure accurate Adjustment of scanner unit.
Figure 5-10. Testing Chart Counter Display
4. The scanner starts reading Testing Chart and the following message is displayed on the LCD.
Figure 5-11. LCD Display While Carrying Out Find Edge Adjustment
5. The following message is displayed after the find edge adjustment is complete.
Figure 5-12. Find Edge Adjustment
CHECKPOINT
A Testing Chart is used for this adjustment. Make sure to obtain a Testing Chart which is set as an ASP (ASP code: 1509578) in advance.If the Testing Chart reaches the following limit of usage, replace it with a new one.
For the find edge adjustment, restarting the scanner is not necessary.
CAUTION Make sure to set the Testing Chart as shown below when setting it on the Input Tray Assy.
The find edge adjustment can not be carried out properly if the Testing Chart is slanted. Make sure to align the Testing Chart with the Edge Guide to prevent slant when setting it on the Input Tray Assy.
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5.3.4 Firmware Version Check1. Press the “Get FW Ver.” button on the main menu of the Adjustment Program.
(See Figure 5-2.)
2. The firmware version of the current Main Board on the connected scanner and its control Panel is displayed.
Firmware version of the Main Board Boot Version:xxxx Program Version:xxxx
Firmware version of the Panel LCM=xxxx LCMFW Version=xxxx
Figure 5-13. Firmware Version Check
5.3.5 Firmware Update
5.3.5.1 Firmware update of the Main Board
Make sure to quit all the other applications before performing the firmware update. During update, in addition, do not perform any other scanner operation but updating. Note that if updating fails, replacement of the board is required.
The files of the firmware for the Main Board consist of the following 3 files.
1. Confirm the firmware version for the Main Board is the same as the one you want to update to by executing the firmware version check. If not, go to step 2. (See 5.3.4 Firmware Version Check (P85).)
2. Delete all the files in the “MainBoard_FW” folder which is on the same hierarchical level as the Adjustment Program. (See Figure 5-1.)
3. Copy the latest firmware files (brn file x 2, ini file x 1) to the “MainBoard_FW” folder.
4. Press the “MainBoard_FW” button on the main menu of the Adjustment Program. (See Figure 5-2.)
5. Firmware update of the Main Board is carried out and the following message is displayed after the update is complete.
Figure 5-14. Firmware update of the Main Board
6. Turn the scanner off and turn it back on.
7. Execute the firmware version check to confirm the firmware is updated. (See 5.3.4 Firmware Version Check (P85).)
CAUTION
CHECKPOINT
• Files with the extension of “brn”: 2 files • File with the extension of “ini”: 1 file
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5.3.5.2 Firmware update of the Panel
Make sure to quit all the other applications before performing the firmware update. During update, in addition, do not perform any other scanner operation but updating. Note that if updating fails, replacement of the board is required.
The files of the firmware for the Panel consist of the following 3 files.
1. Confirm the firmware version for the Panel is the same as the one you want to update to by executing the firmware version check. If not, go to step 2. (See 5.3.4 Firmware Version Check (P85).)
2. Delete all the files in the “Panel_FW” folder which is on the same hierarchical level as the Adjustment Program. (See Figure 5-1.)
3. Copy the latest firmware files (bin file x 2, ini file x 1) to the “Panel_FW” folder.
4. Press the “Panel_FW” button on the main menu of the Adjustment Program. (See Figure 5-2.)
5. Firmware update of the Panel is carried out and the following message is displayed during updating.
Figure 5-15. LCD Display While Carrying Out Firmware Update of the Panel
6. When the following message is displayed after the firmware update of the Panel is complete, turn the scanner off and then turn it back on.
Message on computer
LCD display
Figure 5-16. LCD Display After Completing Firmware Update7. Execute the firmware version check to confirm the firmware is updated. (See 5.3.4
Firmware Version Check (P85).)
CAUTION
CHECKPOINT
• Files with the extension of “bin”: 2 files • File with the extension of “ini”: 1 file
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EPSON GT-S80/S50 Revision B
ADJUSTMENT Test Charts Maintenance 87Confidential
5.4 Test Charts Maintenance1. Store the Test Charts in a proper location when not using.
Replace the Test Charts under the below conditions:
Reach usage limit.
Crumbled or damaged (torn).
Scanning surface is disfigured or dirty.
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EPSON GT-S80/S50 Revision B
MAINTENANCE Overview 89Confidential
6.1 OverviewThis chapter explains the maintenance work necessary to keep this product in the best condition and to prevent trouble in advance.
6.1.1 CleaningClean the outside of the product with a neutral detergent, and clean its inside with a vacuum cleaner. Special care must be taken when cleaning the document reading surfaces (glass parts) since it affects the quality of image scanning.
Exterior After wetting a clean cloth with water and then completely squeezing water out of it, wipe the exterior with that close. If the exterior is extremely dirty, wipe it with a cloth moistened with a small amount of detergent.
Document reading surfaces (glass parts) Clean them with a clean, dry cloth. When the document reading surfaces are especially dirty or have foreign material on their surface, wipe it with a cloth moistened with a small amount of neutral detergent. If the document reading surfaces have traces of wiping after cleaning, completely wipe them with a dry, clean cloth again.
Document transfer path (Paper Feed Roller, PF Roller, EJ Roller, Idle Roller, Separation Pad) Wipe the rollers and separation pad in the document transfer path with a tightly squeezed cloth. If the path is still wet after the cleaning, completely wipe it with a dry, clean cloth again. Make sure that the document transfer path is completely dry before using the scanner.
Document reading surfaces (glass parts)
Figure 6-1. Cleaning
CAUTION Never use organic solvents, such as thinner and benzene, because they may deteriorate or degrade the plastic and rubber parts.When using compressed air products; such as air duster, for cleaning during repair and maintenance, the use of such products containing flammable gas is prohibited.
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EPSON GT-S80/S50 Revision B
MAINTENANCE Overview 90Confidential
6.1.2 LubricationThis scanner does not require lubrication in the specified service range.
http://www.manuals4you.com
EPSON GT-S80/S50 Revision B
APPENDIX Connectors 92Confidential
7.1 ConnectorsThe following table indicates the connector signal wiring on the electrical circuit boards of this product.
7.1.1 Connector Reference Table
Board Connector Description Number of Pins
GT-S80 GT-S50
Main Board
J1 Switch Harness 2
J2 DC Connector 3
J4 Carriage Assy (Top) Board/ LCM Board 26
J5 Carriage Assy (Top) Board 7
J6 Carriage Assy (Bottom) Board 20
J7 6
J8 TX Board 2 ---
J10 PF Motor 4
J11 Pick up Motor 4
J13 Door Sensor 3
J14 TX Board 5
J15 3
Carriage Assy (Top) Board
J2 Main Board 18
J3 6
J5 2
Carriage Assy (Bottom) Board
J2 Main Board 18
J3 6
J5 2
TX Board
J1 Ultra Sonic Sensor 2 ---
J2 Main Board 8
J3 Paper Detect Sensor 4
J4 Paper Path Sensor 3
LCM BoardJ2
Panel Wire/ RX Harness/ RX Board
3 ---
J4 Main Board 6
RX Board*J1 Ultra Sonic Sensor 2 ---
J2 LCM Board 2 ---
Note * : GT-S80 only
Board Connector Description Number of Pins
GT-S80 GT-S50
EPSON GT-S80/S50 Revision B
APPENDIX Connectors 93Confidential
7.1.2 Connector Arrangement
J5
J7
J6
J10
J4J13
J14
J15
J11
J2J1
Door Sensor
Pick up Motor
DC InputSwitch Harness
Main Board
TX BoardJ2
J1 Ultra Sonic Sensor
Paper Detect Sensor
Carriage Assy (Bottom) Board
J2
J5
J3
PF Motor
Carriage Assy (Top) Board
J2 J5J3
LCM Board
J4J2
RX Board
J2
Relay Connector
J1
J3
J4 Paper Path Sensor
Ultra Sonic Sensor
CHECKPOINT
The part enclosed by a broken line is mounted only on GT-S80, not for GT-S50.
J8
Figure 7-1. Diagram of Wiring Connectors
EPSON GT-S80/S50 Revision B
APPENDIX Exploded Diagram / Parts List 94Confidential
7.2 Exploded Diagram / Parts ListThis manual does not provide exploded diagrams or parts list. For the information, see SPI (Service Parts Information).
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