epson gt-s80_gt-s50 service manual

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.

http://www.manuals4you.comhttp://www.manuals4you.com

http://www.manuals4you.com

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)



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




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



Confidential

C H A P T E R

1PRODUCT DESCRIPTION




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




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





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





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




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




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




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




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




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.



Confidential

C H A P T E R

2 OPERATING PRINCIPLES




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




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



1

3

4

5

6

7

9

8

11

10

2

12



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





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



Confidential

C H A P T E R

3 TROUBLESHOOTING




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.




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.


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.



Table 3-5. The host does not recognize the scanner even if turning it on.


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.


Table 3-6. The Carriage LED does not light.


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.


Table 3-7. The document is not detected.


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


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.




Table 3-8. The document is not fed.


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


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






6 Operation failure of the paper path sensor lever

Check if the paper path sensor lever moves smoothly.


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


8 Paper path sensor failure --- Replace the Paper Path Sensor.


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.


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


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


6 Operation failure of the paper path sensor lever.

Check if the paper path sensor lever moves smoothly.


7 Paper path sensor failure --- Replace the Paper Path Sensor.


9 Main board failure --- Replace the Main board Assy.

Table 3-10. Double feed is not detected. (GT-S80 only)


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


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


4 Ultra Sonic Sensor failure --- Replace the Ultra Sonic Sensor.

5 TX board/RX board failure

--- Replace the TX Board/RX Board.


Table 3-8. The document is not fed.


Table 3-9. The document is jammed.




Confidential

C H A P T E R

4DISASSEMBLY / ASSEMBLY




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.





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).






In the next step, make sure to place a cloth or the like to prevent damaging the external part.



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).


Rear

Fold over the tape’s edge by 5 mm


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)





3. Close the Top Unit, and secure the Protection Sheet to the front of Top Unit with strong tape.

Protection Sheet


5 mm5 mm

Protection Sheet

Standard Line


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






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.



100mm

Right

60mm

100mm

Left


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)


90mm 90mm

Air packing


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)





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).




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)



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)"



Figure 4-10. Disassembly Flowchart (2)





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


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)



Dowel

Separator Module

Hook



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



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



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



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



4.2.3 Switch Holder/ DC Cable ConnectorParts/Components must be removed in advance None



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



Rib

DC Cable connector

Main Board Assy J2

Switch Holder



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.


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.


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.





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)



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.



Switch Harness

Hook

DowelRibPoint A

Base Cover



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.





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






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


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.





Top digital harness

Clamp D

Clamp C

Top analog harness

Bottom



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.


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


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.


CAUTION



Shaft & bearing

Top unit

Metal Frame Assy

Front



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.


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.



Grounding wire of top analog harness

Grounding wire of top digital harness


Figure 4-36. Installing the Grounding Wire (1)

Grounding wireof RX harness

Grounding wire coming from Top unit


Figure 4-37. Installing the Grounding Wire (2)

After replacing the Top unit, make the specified adjustments. (See Chapter 5 "ADJUSTMENT")



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





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)".


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



[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


Rear side



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


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





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)



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



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


Bottom Cover

Metal Frame Assy

Hook




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.





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)


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)


PF motor harness (J10)


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.


CAUTION

CAUTION



Timing Belt

Pinion gear of PF motor

Right



10. Detach the timing belt from the pinion gear of the PF motor.


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.


Bottom analog harness

Bottom digital harness

Clamp GBottom

12. Release the bottom digital harness and the bottom analog harness from the clamp G.


CAUTION




Metal Frame Assy

C.P.F.S. 3x12 (7.0-7.5 Kgfcm)

Bottom



13. Remove the four screws that secure the Carriage Assy (Bottom), and detach the Carriage Assy (Bottom) from the Metal Frame Assy.


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




Glass surface

J3

J5J2


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.)



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")



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)/


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





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)



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



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.)



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




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)/


Door Sensor

Bottom Cover

Rib


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





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)/


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


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.




Edge Guide

Top of Bottom Cover



4. Pull out the two Edge Guides in the direction of the arrows to remove them.


Spur gear

Edge Guide Rack

C.P.F.P. 3x8 (black) (4.5-5.0 Kgfcm)


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.



Double-sided tape

Top

Bottom

Bottom Cover Mylar

Rear of Bottom Cover Mylar

Figure 4-70. Installing the Bottom Cover Mylar



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)



Hinge Cover

Top unit


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



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



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)




Top unit


1. Remove the seven screws that secure the Front Cover.

Figure 4-73. Removing the Front Cover (1)

REASSEMBLY

CHECKPOINT

CAUTION



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


Front Cover

Lock of Top unit

Hole

Hook



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.


CAUTION



J2

LCM Board

Panel wire

Hole

Front Cover



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.)


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.




Positioning hole & dowel

LCM Board Front Cover




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



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.



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.



Main body of Top unit

Front CoverTop digital harness

Figure 4-82. Installing the Front Cover (1)



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





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)



1. Disconnect the following harness from the connector on the Carriage Assy (Top).

Top digital harness (J2, J5)


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)


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

CAUTION



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



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)



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





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)".



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



OK NGUltra Sonic Sensor Ultra Sonic Sensor




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.)





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)


Clamp H



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





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)



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



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



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.



Confidential

C H A P T E R

5ADJUSTMENT




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




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




ADJUSTMENT Adjustment Program Overview 79Confidential

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




ADJUSTMENT Adjustment 80Confidential

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





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





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)





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.





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.





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





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




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.



Confidential

C H A P T E R

6MAINTENANCE




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.




MAINTENANCE Overview 90Confidential

6.1.2 LubricationThis scanner does not require lubrication in the specified service range.



Confidential

C H A P T E R

7APPENDIX




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


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


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).

epson gt-s80_gt-s50 service manual

Documents

epson product

repair procedures

product description

available power source

stepbystep procedures

repairmaintenance procedures

source voltages

source ic