Epson GT-S80_GT-S50 Service Manual

Color Docum ent Scanner

EPSON GT-S80 / GT-S50

PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1) Personal injury and 2) dam age 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 PERFORMING ANY MAINTENANCE MAINTENANCE OR REPAIR REPAIR PROCEDURES.

2.

NO WORK SHOULD BE PERFORMED ON THE THE UNIT BY PERSONS PERSONS UNFAMILIAR WITH BASIC SAFETY MEASURES MEASURES AS DICTATED DICTATED FOR ALL ELECTRONICS ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.

3.

WHEN PERFORMING TESTING AS DICTATED DICTATED WITHIN THIS THIS MANUAL, DO NOT CONNECT THE UNIT TO A POWER SOURCE UNTIL INSTRUCTED 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 DISASSEMBLING OR ASSEMBLING A PRODUCT, MAKE SURE SURE TO WEAR GLOVES TO AVOID INJURIER INJURIER FROM METAL PARTS WITH SHARP EDGES.

WARNING 1.

REPAIRS REPAIRS ON EPSON PRODUCT PRODUCT SHOULD SHOULD BE PERFORMED PERFORMED ONLY ONLY BY AN EPSON CERTIFIED CERTIFIED REPAIR REPAIR TECHNICIAN. TECHNICIAN.

2.

MAKE CERTAIN THAT THAT THE SOURCE VOLTAGES IS THE THE SAME AS THE RATED VOLTAGE, VOLTAGE, LISTED ON THE SERIAL NUMBER/RATING PLATE. IF THE EPSON PRODUCT 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 DISCONNECTED FROM THE THE POWER SOURCE BEFORE REMOVING REMOVING OR REPLACING PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.

4.

IN ORDER TO TO PROTECT SENSITIVE MICROPROCESSORS AND CIRCUITRY, USE STATIC STATIC DISCHARGE EQUIPMENT, SUCH AS ANTI-STATIC ANTI-STATIC WRIST STRAPS, STRAPS, WHEN ACCESSING INTERNAL COMPONENTS.

5.

DO NOT REPLACE REPLACE IMPERFECTLY IMPERFECTLY FUNCTIONING COMPONENTS WITH COMPONENTS WHICH WHICH ARE NOT MANUFACTURED BY EPSON. IF SECOND SOURCE IC OR OTHER 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, DUSTER, FOR CLEANING DURING REPAIR AND MAINTENANCE, THE USE OF SUCH PRODUCTS CONTAINING FLAMMABLE GAS IS PROHIBITED.

About This Manual This manual describes basic functions, theory of elec trical and mechanical operations, maintenance and re pair 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 DISASSEMBLY/ASSEMBLY Describes the step-by-step procedures for disassembling and asse mbling the product. CHAPTER 5. ADJUSTMENT ADJUSTMENT Provides Epson-approved methods for adjustment. CHAPTER 6. MAINTENANCE MAINTENANCE Provides preventive maintenance procedures and the lists of Epsonapproved 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. ADJUSTMENT REQUIRED

CAUTION

CHECK POINT

Indicates an operating or maintenance procedure, practice or condition that is necessary to keep the product’s quality.

Indicates an operating or maintenance procedure, practice, or condition that, if not strictly observed, could result in damage to, or destruction of, equipment.

May indicate an operating or maintenance procedure, practice or condition that is necessary to accomplish a ta sk efficiently. It may also provide additional information that is related to a specific subject, or comment on the results a chieved 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.

Revision Status Revision

Date of Issue

A

November 10, 2008

Description First release [Chapter 1] • Correction of LED status in “Table 1-4. Error Definition and Remedy List” (p17) [Chapter 3] • Addition and correction of errors in “Table 3-1. Error List” (p24) [Chapter 4] • 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)

B

February 17, 2009

• 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) [Chapter 5] • 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

Contents Chapter 1 PRODUCT DESCRIPTION

Chapter 4 DISASSEMBLY / ASSEMBLY

1.1 Features.................. ......................... ........................ ......................... ..................... 9

4.1 Overview ...................... ........................... ........................ ......................... .......... 29 4.1.1 Precautions ...................... ......................... ........................ ....................... 29 4.1.2 Recommended Tools. ......................... ......................... ........................ .... 29 4.1.3 Recommended Screws ....................... ......................... ......................... ... 29 4.1.4 Protection for Transportation ........................ .......................... ................ 30 4.1.5 Differences between the Models ....................... ........................... ........... 34

1.2 Specifications ........................ ......................... ........................ ......................... .. 10 1.3 Operating System Compatibility ......................... ......................... ...................... 13 1.4 Interface ......................... ........................ ......................... ......................... ........... 13 1.5 Exterior Specifications ....................... ........................... ........................ ............. 14 1.5.1 Operation Buttons.............. ......................... ......................... .................... 14 1.5.2 LED Indicator ......................... ........................ ......................... ................ 14 1.5.3 Dimensions ........................ ......................... ......................... .................... 15 1.5.4 Maximum Document Size and Placement ....................... ....................... 15 1.6 Control Codes... ......................... ......................... ......................... ....................... 16 1.7 Error-Time Processing........................ ......................... ......................... .............. 17

Chapter 2 OPERATING PRINCIPLES 2.1 Engine Operation Outline........ ........................... ......................... ....................... 19 2.1.1 Carriage Unit ..................... ......................... ......................... .................... 19 2.2 Document Feeding Mechanism ....................... ........................ ......................... .. 20 2.2.1 Configuration................... ......................... ......................... ...................... 20 2.2.2 Scanning Operation ...................... .......................... ......................... ........ 21 2.2.3 Detecting Double Feeding (GT-S80 only) ...................... ........................ 22

Chapter 3 TROUBLESHOOTING 3.1 Overview ....................... ........................ ........................ ........................ ............. 24 3.1.1 Self-Diagnostic Function.............. ......................... .......................... ........ 24 3.2 Troubleshooting............................... ......................... ....................... ................... 25

4.2 Disassembly Procedure ......................... .......................... ......................... .......... 35 4.2.1 Input Tray Assy ....................... .......................... ......................... ............. 37 4.2.2 Separator Module/Paper Feed Roller/Separation Pad................ ............. 37 4.2.3 Switch Holder/ DC Cable Connector .......................... .......................... .. 40 4.2.4 Base Cover/Switch Harness/Foot. .......................... ......................... ........ 42 4.2.5 Top unit ........................ ......................... ......................... ........................ . 44 4.2.6 Main Board Assy..... ......................... ........................ ........................ ....... 49 4.2.7 Bottom Cover ........................ ......................... .......................... ............... 51 4.2.8 Carriage Assy (Bottom)...................... ....................... ......................... ..... 53 4.2.9 Ultra Sonic RX Board/ Ultra Sonic Sensor (Receiver) (GT-S80 only) ....................... ................... 56 4.2.10 Door Sensor ........................ ......................... ........................ .................. 59 4.2.11 Bottom Cover Mylar/Edge Guide ...................... ......................... .......... 60 4.2.12 Hinge Cover ....................... ......................... ........................ .................. 62 4.2.13 Front Cover/LCM Board/Display Cover.............. ........................... ...... 63 4.2.14 Carriage Assy (Top) ...................... .......................... ......................... ..... 69 4.2.15 Paper Path Sensor. ......................... .......................... ......................... ..... 70 4.2.16 Ultra Sonic TX Board/Ultra Sonic Sensor (transmitter) ....................... 71 4.2.17 Metal Frame Assy ......................... ........................ ........................... ..... 73 4.2.18 Top Cover Assy..................................................................................... 74

EPSON GT-S80/S50

Chapter 5 ADJUSTMENT 5.1 Adjustment Items and Overview ..................... ........................ ........................ ... 77 5.1.1 List of Adjustment Items ........................ .......................... ....................... 77 5.1.2 Required Adjustments after Removing/Replacing Parts ......................... 78 5.2 Adjustment Program Overview .......................... ......................... ....................... 78 5.2.1 Operational Environment ...................... ........................... ....................... 78 5.2.2 How to Use Adjustment Program................... ......................... ................ 79 5.2.2.1 File and folder structure of the Adjustment Program.......................... 79 5.2.2.2 Starting up the Adjustment Program............................ ....................... 79 5.3 Adjustment ....................... ........................ ......................... ......................... ........ 80 5.3.1 Reading and Writing EEPROM Data....................... ............................ ... 80 5.3.2 Shading Adjustment ...................... ......................... ......................... ........ 83 5.3.3 Find Edge Adjustment .......................... .......................... ......................... 84 5.3.4 Firmware Version Check............ ......................... ......................... ........... 85 5.3.5 Firmware Update ....................... ......................... ........................ ............. 85 5.3.5.1 Firmware update of the Main Board 85 5.3.5.2 Firmware update of the Panel 86 5.4 Test Charts Maintenance .......................... ......................... ........................... ...... 87

Chapter 6 MAINTENANCE 6.1 Overview ....................... ........................ ........................ ........................ ............. 89 6.1.1 Cleaning............ ......................... ......................... ....................... .............. 89 6.1.2 Lubrication ........................ ......................... ......................... .................... 90

Chapter 7 APPENDIX 7.1 Connectors..... ......................... ......................... ........................ ......................... .. 92 7.1.1 Connector Reference Table ......................... ......................... ................... 92 7.1.2 Connector Arrangement ....................... .......................... ......................... 93 7.2 Exploded Diagram / Parts List ......................... ....................... ........................ ... 94

Revision B

CHAPTER

1 PRODUCT DESCRIPTION

EPSON GT-S80/S50

Revision B

1.1 Features

•

The 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

Resolution



•



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

Scanning speed (ppm*1 / ipm*2)



Auto Area Segmentation (AAS)



Offers 5,100 x 21,600 pixels of maximum scanning size



Double-sided scanning



Double feed detection (GT-S80 only)

GT-S80

GT-S50

200dpi

40ppm / 80ipm

25ppm / 50ipm

300dpi

17ppm / 34ipm

10ppm / 20ipm

400dpi / 600dpi

4ppm / 8ipm

2ppm / 4ipm

Note"*1" : ppm = Page Per Minute "*2" "*2" : ipm = Image Image Per Minute Minute NOTE: Scan condition A4 document; scanned using EPSON Scan on the PC (Core™2 CPU670 0, 2.66GHz, 2GB RAM, Windows XP) connected through USB 2.0 interface. 

•

Searchable PDF Supported languages: languages: Japanese, English, French, Italian, German, Spanish, Portuguese, Dutch, Russian, Ukrainian High compression PDF Encrypted PDF

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:



Fast continuous scanning 



Up to 75 sheets of paper (75 g/m 2) can be set at a time

Interface 

USB 2.0 Hi-speed

EPSON GT-S80/S50

Revision B

1.2 Specifications

Table 1-1. Scanner Specifications Specifications

Table 1-1. Scanner Specifications Specifications Prod Produc uctt typ typee

Shee Sheett Fee Feed, d, one one pas passs dup duple lex, x, A4 Colo Colorr Doc Docum umen entt Sca Scann nner er

Scan Scanni ning ng met metho hod d

Fixe Fixed d carr carria iage ge and and mov movin ing g docu docume ment nt

Optical sensor

Document setting position Scan Volume

Center of the document table 

GT-S80 GT-S80 :1,800 :1,800 pages/ pages/day day



GT-S50 GT-S50 :1,200 :1,200 pages/ pages/day day



Paper Supply : Face down down loading

Interface



Pape Paperr out out

Light source

White LED

Push buttons

1 switch

: Power

4 buttons buttons

: Start, Start, Cancel, Cancel, Up Up arrow, arrow, Down Down arrow arrow

: Fac Facee dow down n eje eject ctin ing g

3-line color CCD

Maximum document size

8.5 x 36 inches (216 x 914 mm)

Docu Docume ment nt siz sizee

A4, A4, US lette letter, r, Leg Legal al,, B5, B5, A5, A5, A6, A6, Busi Busine ness ss car card, d, Pla Plast stic ic car card d *1, Emboss card *1, A3*2, B4*2, Custom sizes*3

Effect Effective ive pixels pixels

5,100 5,100 (main (main scan) scan) x 21,6 21,600 00 (sub (sub scan scan)) pixe pixels ls at 1200 1200 dpi dpi

Maximum output pixels

5,100 (main scan) x 21,600 (sub scan) pixels

Scanni Scanning ng resolu resolution tion

• 600 dpi (main (main scan) scan)

USB 2.0 Hi-Speed (Standard)

C om om ma man d l ev ev el el

E SC SC /I /I -D -D 2 ( FS FS Su Su pp ppo rt rt )

Double feed detection

The following two types of setting are available from TWAIN driver. Thin Paper

: 50 - 90 g/m 2

Standa Standard rd Paper Paper : 60 - 130 130 g/m g/m 2 Note"*1" : Portrait scanning only. "*2" "*2" : Using Using a carrier carrier sheet sheet "*3": 53.5 mm x 73.7 73.7 mm - 216 mm x 914.4 914.4 mm

• 600 dpi (sub scan); (Mechanical (Mechanical step is 300dpi.)

CONSUMABLES

Output Output resolu resolutio tion n

75, 100, 100, 150, 150, 200, 200, 240, 240, 300, 300, 400, 400, 600, 600, dpi dpi

Pixel depth

Input: 16 bits per pixel Output: 1, 8 bits per pixel



Roller Assembly Kit Contents: Paper Feed Roller, Separation Pad (one each)

Output tone

1, 8, 24 bit per pixel (Sel ec ectable)



Scanning speed



Carrier Sheet Contents: Carrier Sheet (five sheets) Insert the following documents into the Carrier Sheet when scanning them.

A4 size 



GT-S80 150 dpi 200dpi 300dpi 400 dpi dpi / 600 600 dpi dpi GT-S50 150 dpi 200dpi 300dpi 400 dpi dpi / 600 600 dpi dpi

: 0.73 msec/line : 0.501 msec/line : 0.813 msec/line : 1.484 1.484 msec/lin msec/linee : 0.73 msec/line : 0.501 msec/line : 1.23 msec/line : 1.484 1.484 msec/lin msec/linee

Feed Feedin ing g meth method od

Fric Fricti tion on feed feed by roll roller erss

Paper ca capacity

75 sheets (7 (75 g/m 2)

Paper weight

• Au Auto

: 50 - 130 g/m2

• Manu Manual al

: 45 45 - 200 200 g/m g/m2



B4 or A3 sized documents: Fold the documents in half



Documents with irregular shape such as newspaper clippings



Documents with holes or perforations

EPSON GT-S80/S50

Revision B

ELECTRICAL SPECIFICATIONS

EMC AND SAFETY STANDARDS COMPLIANCE

Table 1-2. Electrical Specifications Specifications Main unit

Scanner

Voltage

Rated input voltage

24 VDC

Input voltage

24 - 26.4 VDC

Rated input current

2A

Power co consumpti on on



Operating

100V

GT-S80: 45 45W GT-S50: 40 40 W

Read Ready y mode mode

GT-S GT-S80 80:: 13W 13W GT-S GT-S50 50:: 13 13 W

Slee Sleep p mode mode

GT-S GT-S80 80:: 5.5 5.5W W GT-S GT-S50 50:: 5.5 5.5 W

Power Of Off

GT-S80: 1W 1W

200V

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

2A

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



Regulation (Safety/EMC)

Country

Standard Name

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

EMC Directive

EU

EN55022 Class B EN55024

Russian Federation Law on Consumer Rights Protection #1

Russi a

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)

Aust Austra rali liaa

AS/N AS/NZS ZS CISP CISPR2 R22 2 Clas Classs B

AC Adapter

Voltage 100V

Regulation (Safety/EMC) UL

Country U.S.A

Standard Name 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

EPSON GT-S80/S50

200V

Revision B

Low Voltage Directive

EU

EN60950-1

RELIABILITY

EMC Directive

EU

EN55022 Class B, EN55024 EN61000-3-2, EN61000-3-3



Scanner:

GS

Germany

EN60950-1

Consumer Protection (Safety Requirements) Registration Scheme

Singapore

IEC60950-1



Roller Assembly Kit*1

: 100,000 cycles



Carrier Sheet*1

: 500 cycles

Russian Federation Law on Consumer Rights Protection #1

Russia

GOST-R (IEC60950-1, CISPR 22)

CCC#1

China

GB4943 GB9254 Class B, GB17625.1



Paper type

: High quality paper, recycle paper

Korean Safety Regulation

Korea

K60950, KN14, KN14-1



EPSR, Hong Kong Safety

Hong Kong IEC60950-1

Document size Maximum Minimum

: 216 mm x 914.4 mm : 53.5 mm x 73.7 mm

Argentina Safety Regulation

Argentina

IEC60950-1

Saudi Arabian Safety Regulation

Saudi Arabia

IEC60950-1

Australia S afety R egulation

Australia

AS/N ZS 6 0950.1

Australia EMC frame work (C-tick)

Australia

AS/NZS CISPR22 Class B

DOCUMENT TYPE

: Auto : 50 - 130 g/m 2 Manual: 45 - 200 g/m 2



Paper weight



Papers that are not guaranteed 

Coated paper



Paper weight of 40g/m 2 or more, to less than 45g/m 2

CAUTION

The following document should be avoided. Documents bound with a staple or clip, etc.  Document with labels or tape attached  Documents with holes and Loose leaf  Folded paper  Envelope  Photo paper, OHP sheet  Curling paper whose curling portion is longer than 30mm, and higher than 5mm 



Contact discharge: 2 kV, 4 kV, 5 kV



Air discharge:

2 kV, 4 kV, 8 kV, 10 kV

ENVIRONMENTAL Table 1-3. Environmental Requirements Temperature

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)



: 450,000 cycles (1,800 pages/day) : 300,000 cycles (1,200 pages/day)

Note *1 : Consumables (End-user obtainable/replaceable)

STATIC ELECTRICITY



GT-S80 GT-S50

Dust Ordinary office or home conditions. Extreme dust should be avoided. Illumination Operation under direct sunlight or near strong light source should be avoided.

L H   

Paper whose weight is less than 40 g/m 2 or more than 200g/m 2 Thermal paper Magazine clipping

EPSON GT-S80/S50

Revision B

1.3 Operating System Compatibility

1.4 Interface

The scanner is compatible with the following operating systems.

The interfaces of this scanner are shown below.

Interface USB 2.0 Hi-Speed

Note *1 :

*2 :

Operating System • • • •

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

USB 2.0

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. iMac/iBook/Power Book/Power Macintosh equipped with USB2.0 interface as standard.

Power Button

AC Input 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. Casca de connection is not supported.

EPSON GT-S80/S50

Revision B

1.5 Exterior Specifications 1.5.1 Operation Buttons 

Power 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.

LCD

Error LED

Power LED

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 Indicator The 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

Note * :

Scanning, or initializing

Down Button

Up Button

Start Button

Figure 1-2. Buttons and LED

Cancel Button

EPSON GT-S80/S50

Revision B

1.5.3 Dimensions 



1.5.4 Maximum Document Size and Placement

Dimensions and Weight 

Dimensions



Weight

REFLECTIVE DOCUMENT

: 303(W) x 202(D) x 213(H) mm (Excluding protrusions)



Dimension: 216 mm (Horizontal) x 914.4 mm (Vertical)

: 5.0 kg

External Drawing

216

914.4 108

213

470 303 202 Unit: mm Unit: mm Figure 1-3. External Dimensions Figure 1-4. Reflective Document Scanning Range

EPSON GT-S80/S50

Revision B

1.6 Control Codes

Category Control

The following table lists the control codes used for the scanner. Category Execution command

Data form setting

Command Name ID request

Code 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 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

Command Name Normal response

Code ACK

Abnormal response

NACK

Scanning stop

CAN

Header

STX

EPSON GT-S80/S50

Revision B

1.7 Error-Time Processing Table 1-4. Error Definition and Remedy List Category Command error

Fatal error

Power LED (Green)

Error LED (Orange)

LED status is not influence by this error

Flashing

Flashing

Cause An invalid command or invalid command parameter was detected.

• The main unit is faulty. • LED is broken.

Scanner response

Recovery

• The scanner ignores the incorrect The error condition is cleared command or parameter. Current setting when the scanner receives a valid maintained. command. • The scanner returns NACK, and waits for the next command parameter. • The scanner turns the LED off and stops the operation. • The scanner sets Bit 7 of the status bit.

Turn the scanner off and then back on.

CHAPTER

2 OPERATING PRINCIPLES

EPSON GT-S80/S50

Revision B

2.1 Engine Operation Outline



CCD Sensor Board

Comprises a 3-line color CCD (Independent R, G, B) and its control/drive circuits.

This chapter describes the functions and operating principles of GT-S80/S50 engine.



LED Board

Uses a white LED as the light source.

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 sca nning.



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.

The engine mainly consists of two components: the carriage units and document feeding mechanism.

2.1.1 Carriage Unit Carriage unit (for backside scan) The 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)

Mirror 2 Mirror 1

Document feeding direction

Mirror 4 LED board

Back side (document)

Front side (document)

Mirror 3

CCD sensor

CCD sensor

LED board Lens

CCD sensor board Figure 2-1. Configuration of the Carriage Unit

Carriage unit (for frontside scan) Figure 2-2. Mirror/Lens Mechanism

EPSON GT-S80/S50

Revision B

2.2 Document Feeding Mechanism

Table 2-1. ADF Mechanism Configuration No.

GT-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.

Parts Name Tray sensor

Function Detects whether the document tray is open or closed. When the document tray is closed, the scanner turns to powersaving mode. When the tray is open, the scanner recovers from the power-saving mode.

9

NOTE: Some sizes of the documents require a carrier sheet.

Status OPEN

Shielded

2.2.1 Configuration

CLOSE

Not Shielded

Paper path sensor

The 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. 1 2

Parts Name PF motor

Function

10

Drives the PF Roller/EJ roller. 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.

I dl e r ol le r

Fe eds doc um en ts in c oor di na ti on w it h t he P F R ol le r a nd EJ roller during scanning.

D oor s ens or

D et ec ts w het he r t he t op un it i s o pe n o r c los ed .

7

8

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

Counter-Clockwise direction: Feeds documents. Pickup motor

Tray Sensor

Paper detect sensor

11

Status

Door Sensor

Cover OPEN

Not Shielded

Cover CLOSED

Shielded

12

Note :

Double feeding detect sensors (Ultra sonic sensor; GT-S80 only)

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

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.

See Figure 2-3 for the position of each motor, roller, or sensor.

EPSON GT-S80/S50

Revision B

2.2.2 Scanning Operation 3

The documents set on the document tray are fed one by one separated with the se parate 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.

5 6

In the case of double-sided scanning, both the frontside and backside of the document is scanned simultaneously during document feeding.

7

Cross-section view

4

Separate pad Idle roller 11

Carriage (for backside scan) 1

Idle roller

Document Paper feed roller 8 PF roller 12

EJ roller

Carriage (for frontside scan)

Figure 2-4. Scanning Operation 2 9

10

Figure 2-3. Document Feeding Mechanism

EPSON GT-S80/S50

Revision B

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 se nsors 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 sca nner 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. Normal feeding

Ultra Sonic Sensor (Transmitter)

Double feeding Second document

First document

Ultra Sonic Sensor (Receiver)

Feeding direction

Figure 2-5. Double Feeding Detect Mechanism

Feeding direction

CHAPTER

3 TROUBLESHOOTING

EPSON GT-S80/S50

Revision B

3.1 Overview This 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 Function This 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 Paper Jam Error Cover Open Error Document Detect Error Double Feeding Error

Fatal Error

No Connection Error

Maintenance Error* 2 Note *1 :

LCD Indication E1: PAPER JAM E2: COVER OPEN E3: NO DOC. FOUND*1 E4: DOUBLE FEED FE: FATAL ERROR --: NO CONNECTION LCD status is not influence by this error

Power LED (Green)

Error LED (Orange)

Flashing

Flashing

Off

On

On

Off

Flashing

Flashing

Cause

Remedy/Point to be checked

The document is jammed.

1. Open the Top Unit.

The Top Unit is open.

Close the Top Unit.

No document is detected.

Place the document correctly on the Document Tray.

Double feed is detected during document feeding.

1. Open the Top Unit.

The main unit is faulty. (LED of the carriage is broken or the like)

Turn the scanner off, then turn it back on.

The USB cable connecting the scanner and PC is disconnected.

Connect the scanner and PC with the USB cable.

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. Remove the jammed document and close the Top Unit.

Flashing

Flashing

On

Off

On

Off

2. Remove the jammed document and close the Top Unit In case whereby the Fatal Error is repeatable or cannot recover, observe the operation before error occur and confirm on the related parts.

2. Reset counter under maintenance of Epson Scan Settings.*3

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.

EPSON GT-S80/S50

Revision B

3.2 Troubleshooting

Table 3-3. Scanned image is not clear Step

This section provides troubleshooting procedures based on observed symptoms. In here, specify the troubled part based on a n 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.

Symptom

Sc ann ed im age is not cl ea r.

S can ned im ag e i s n ot cl ea r.

3-3

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.

Th er e i s s om e f or ei gn material such as dust on the inside surface of the scanning sections of carriage (glass parts). (Vertical banding appears on the image.)

3

Carriage Assy (Top) Board/ Is there any abnormality in Carriage Assy (Bottom) the Carriage Assy (Top) Board failure Board/Carriage Assy (Bottom) Board?

4

Main board failure

5

Mechanism failure

3-5

Fatal error has occurred. The Carriage LED does not light. Both Power LED (green) and Error LED (orange) flash, and the scanner does not recover from the error even after restarting it.

3-6

The scanner does not start scanning when the document is placed on the document tray.

The document is not detected.

3-7

The document is not fed.

3-8

Action on Error

2

Reference Table

The scanner does not operate even when turning it on.

Check Point

The scanning sections of Is there any dirt or dust on the Remove the dirt and dust. carriage (glass parts) have scanning sections of carriage See “6.1.1 Cleaning”. dust, etc. (Image has white (glass parts)? spots)

Table 3-2. Problem and Phenomenon Problem

Possible Cause

1

Is there any dirt or dust on the Replace the Carriage Assy inside surface of the scanning (Top)/Carriage Assy sections of carriage (glass (Bottom). parts)?

Is there any abnormality in the scanned images? ---

Replace the Main Board Assy. Replace the Metal Frame Assy.

Table 3-4. The scanner does not perform initial operation when turning it on.

Document is jammed.

---

3-9

Step

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

---

3-10

1

So me co nn ec tor s ar e disconnected.

Check if all the connectors are Connect them correctly. connected correctly.

2

Sw it ch har ne ss fa il ur e

I s t he re an y a bn orm al it y i n 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

Possible Cause

Check Point

---

Action on Error

Replace the Main Board Assy.

EPSON GT-S80/S50

Revision B

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

Possible Cause

Check Point

Table 3-7. The document is not detected.

Action on Error

Step

1

Th e h os t co mp ut er doe s not support USB.

Select “My Compluter” “Properties” - “Device Manager” and check if USB is enabled.

Use PC that supports USB.

1

C on ne ct or of th e p ape r Is the connector connected? detect sensor cable is TX Board: J3 disconnected from the TX board.

Connect the connector correctly.

2

Th e TW AI N D ri ve r h as not been installed correctly.

Is the TWAIN Driver supplied with the scanner installed correctly?

Install (reinstall) the TWAIN Driver for the GT-S80/S50.

2

Connect the connectors correctly.

3

The USB cable is damaged.

Is there any damage to the USB cable?

Replace the USB cable.

Connectors of the harness connecting the TX board and the main board is disconnected.

4

Main board failure

---


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

Possible Cause

1

FFC connect ing the Carriage Assy (Top) Board/Carriage Assy (Bottom) Board to the LED board in the carriage is disconnected.

Is the FFC connected correctly?

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?

3

Fa il ur e o f t he Ca rr ia ge Assy (Top) Board/ Carriage Assy (Bottom) Board

Is there any abnormality in the Carriage Assy (Top) Board/Carriage Assy (Bottom) Board?

4

Main board failure

2

Check Point

Check Point

Is the harness connected correctly?

Action on Error

• Main Board: J8, J14, J15 • TX Board: J2

3

O pe ra ti on fa il ur e o f t he Check if the paper detect Replace the Top Cover paper detect sensor lever. sensor lever moves smoothly. Assy.

4

Paper detect sensor failure

---

Replace the Top Cover Assy.

5

TX board failure

---

Replace the TX Board.

6

Main board failure

---


Action on Error

Connect the FFC correctly.

Table 3-8. The document is not fed.

• Carriage Assy (Top) Board: J4 • Carriage Assy (Bottom) Board: J4

Step

Possible Cause

Check Point

1

The Separation Pad/Paper Feed Roller is worn out or damaged.

---

Replace the Separation Pad/Paper Feed Roller.

2

The PF Rol le r i s w or n ou t or damaged.

---

Replace the Metal Frame Assy.

3

The Idle Roller of the Top Cover Assy is worn out or damaged.

---


Replace the Carriage Assy (Top) Board/Carriage Assy (Bottom) Board.

4

The c on nec tor o f t he Is the cable connected paper detect sensor is correctly? disconnected from the TX TX board: J3 board.



5

The harness that connects the TX board with the main board is disconnected.



• Carriage Assy (Top) Board-Main Board: J4, J5 • Carriage Assy (Bottom) Board-Main Board: J6, J7

---

Possible Cause

Is the harness connected correctly? • Main board : J8,J14,J15 • TX board : J2

Action on Error

EPSON GT-S80/S50

Revision B

Table 3-8. The document is not fed. Step

Possible Cause

Check Point

Table 3-9. The document is jammed. Action on Error

Step

Possible Cause

Check Point

Action on Error

6

Operation failure of the paper path sensor lever

Check if the paper path sensor Replace the Top Cover lever moves smoothly. Assy.

7

Paper path sensor failure

---

Replace the Paper Path Sensor.

7

Th e c onn ect or o f t he Pickup Motor/PF Motor is disconnected from the main board.

Is the cable connected to the following connector correctly?

8

TX board failure

---


9

Main board failure

---

Replace the Main board Assy.


• Pickup Motor Main board: J11 • PF Motor Main board: J10

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

8

Paper path sensor failure

---

Replace the Paper Path Sensor.

9

TX board failure

---


10

Failure of the Pickup Motor/PF Motor

11

Main board failure.

Does the Pickup Motor/PF Motor operates normally? ---


Possible Cause

Possible Cause

Check Point

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

Connect ors of the Ul tra Sonic Sensor are disconnected.

Are the cables connected correctly?


Connectors of the harness that is connected to the TX board/RX board is disconnected.

Is the cable connected to the following connector correctly?


Action on Error

1

There is dirt or dust on the Check if the document paper document path. path get dirt.

Remove the dirt or dust completely.

2

The PF Roller/EJ Roller is worn out or damaged.

---


3

The Idle Roller of the Top Cover Assy is worn out or damaged.

---


4

Th e c onn ect or o f t he Paper Path Sensor is disconnected from the TX board.

Is the cable connected to the following connector correctly? TX board: J4


Connectors of the harness that connects the TX board with the main board is disconnected.

Is the harness connected correctly?


Operation failure of the paper path sensor lever.

Check if the paper path sensor Replace the Top Cover lever moves smoothly. Assy.

5

6

• Main board: J8, J14, J15 • TX board: J2

Action on Error

Double feed detection is not activated in EPSON Scan setting.

Table 3-9. The document is jammed. Step

Check Point

1

3

• One on Top Unit TX board: J1 • One on Lower Cover RX board: J1 Connect the 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.

6

Main board failure

---


CHAPTER

4 DISASSEMBLY / ASSEMBLY

EPSON GT-S80/S50

4.1 Overview This chapter explains the procedures for disassem bling 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.

Revision B

4.1.2 Recommended Tools To 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

---

Before starting disassembly, always rea d the precautions described in the next section.

Flathead screwdriver

OK

---

4.1.1 Precautions

Long-nose pliers

OK

---

Tweezer

OK

---

Before starting the disassembly or reasse mbly of the product, read the following precautions given under the headings WARNING and CAUTION. WARNING



 

CAUTION

   

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. 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.

Note :

Tools whose Epson Part Number is indicated are available from Epson.

4.1.3 Recommended Screws The following table indicates the screws used in the EPSON GT-S80/S50 Scanner. Table 4-2. Recommended Screws No.

Name

Type

1

C.B.P. 3x6

Phillips Bind P-tite Screw, size M3, 6 mm length

2

C.B.P. 3x8


3

C.B.P. 3x10


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

EPSON GT-S80/S50

Revision B

4.1.4 Protection for Transportation

2.

When 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 s hipment from the user, pack each part referring to " Protection without Original Packings (Scanner’s Main Body) (p33)" .

Close the Output Tray Assy and secure it on both the front ends with Strong Tape (x2). 

Strong Tape (x2): 80 mm x 28 mm

PROTECTING THE OUTPUT TRAY ASSY Secure the Output Tray Assy with strong tape a s follows. 1.

Pull out the Output Tray Assy, and attach Strong Tape (x1) to the center of the Output Tray Assy. 


Fold over the tape’s edge by 5 mm Standard Line

Figure 4-2. Protecting the Output Tray Assy (2)

Fold over the tape’s edge by 5 mm Standard Line


EPSON GT-S80/S50

CAUTION

Revision B

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

PROTECTION WITH ORIGINAL PACKINGS (SCANNER’S MAIN BODY) Secure and protect the scanner’s main body as follows. CHECK POINT

3.

Place the scanner upside down.

4.

Secure the bottom of the Output Tray Assy from the rear of the scanner with Strong Tape (x1). 

Strong Tape (x1): 80 mm x 28 mm Rear

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)" .  Protection Sheet (x1)  Cushion 320 mm x 75 mm (x1)  Strong Tape 80 mm x 28 mm (x2)  Strong Tape with cushion (x4)

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)

Left

Right

Fold over the tape’s edge by 5 mm


Strong tape with cushion

Strong tape with cushion Standard Line

Figure 4-4. Protecting the Scanner’s Main Body with Original Packings (1)

EPSON GT-S80/S50

3.

Revision B

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

Protection Sheet




5 mm

4.

Open the cover of Input Tray Assy on the rear, and place the cushion in between. 

Cushion: 320 mm x 75 mm Rear

5 mm

With the Input Tray Assy open

Cushion

Rear With the Input Tray Assy closed

Protection Sheet Standard Line


Cushion


EPSON GT-S80/S50

Revision B

PROTECTION WITHOUT ORIGINAL PACKINGS (SCANNER’S MAIN BODY) If the scanner was brought in without the packing mate rials used for factory shipment, secure and protect the scanner as follows: CHECK POINT

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)" .  Protection Sheet (x1)  Cushion 320 mm x 75 mm (x1)  Strong Tape 80 mm x 28 mm (x2)  Strong Tape with cushion (x4)

1.

Open the Input Tray Assy.

2.

Open the Top Unit and attach Strong Tape (x4) to the locations below. 





Left

Right

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)

Air packing

90mm

90mm

60mm

100mm

100mm Fold over the tape’s edge by 5 mm Standard Line Fold over the tape’s edge by 5 mm Standard Line

Figure 4-7. Protecting the Scanner’s Main Body (1)

Figure 4-8. Protecting the Scanner’s Main Body (2)

EPSON GT-S80/S50

Revision B

4.1.5 Differences between the Models Some 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 reas sembling the GT-S50, refer to the table below to make sure the differences between them before disassembling/reassembling. Table 4-3. Procedure Differences Parts name U lt ra S oni c Se ns or

GT-S80 Mo unt ed

GT-S50 Not mounted

Reference page 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).

Bottom of Top unit

Bottom of Top unit

Ultra Sonic Sensor (transmitter)

Front of Bottom Cover

Front of Bottom Cover

Ultra Sonic Sensor (receiver)

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

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 "4.2.6 Main Board Assy" (p49).

See "4.2.5 Top unit" (p44). See "4.2.6 Main Board Assy" (p49).

EPSON GT-S80/S50

Revision B

4.2 Disassembly Procedure This 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.

Start

"4.2.3 Switch Holder/ DC Cable Connector (p40)"

"4.2.1 Input Tray Assy (p37)"

"4.2.2 Separator Module/ Paper Feed Roller/ Separation Pad (p37)"

"4.2.1 Input Tray Assy (p37)"

"4.2.4 Base Cover/ Switch Harness/Foot (p42)"

To Figure 4-10 "Disassembly Flowchart (2) (p 36)" CHECK POINT





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.

Figure 4-9. Disassembly Flowchart (1)

EPSON GT-S80/S50

Revision B

From Figure 4-9 "Disassembly Flowchart (1) (p 35)"

"4.2.6 Main Board Assy (p49)"

"4.2.5 Top unit (p44)"

"4.2.8 Carriage Assy (Bottom) (p53)"

"4.2.7 Bottom Cover (p51)"

"4.2.5 Top unit (p44)"

"4.2.9 Ultra Sonic RX Board/ Ultra Sonic Sensor (Receiver) (GT-S80 only) (p56)"

"4.2.8 Carriage Assy (Bottom) (p53)"

Disassembling the Top unit

"4.2.12 Hinge Cover (p62)"

"4.2.10 Door Sensor (p59)"

"4.2.11 Bottom Cover Mylar/Edge Guide (p60)"

"4.2.13 Front Cover/ LCM Board/Display Cover (p63)"

"4.2.7 Bottom Cover (p51)"

"4.2.14 Carriage Assy (Top) (p69)"

"4.2.17 Metal Frame Assy (p73)"

"4.2.15 Paper Path Sensor (p70)"

CHECK POINT

 

 

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) Figure 4-10. Disassembly Flowchart (2)

"4.2.9 Ultra Sonic RX Board/ Ultra Sonic Sensor (Receiver) (GT-S80 only) (p56)"

"4.2.18 Top Cover Assy (p74)"

"4.2.16 Ultra Sonic TX Board/Ultra Sonic Sensor (transmitter) (p71)"

EPSON GT-S80/S50

Revision B

4.2.1 Input Tray Assy 



4.2.2 Separator Module/Paper Feed Roller/Separation Pad

Parts/Components must be removed in advance None



Disassembly Procedure 1. 2.

Open the Input Tray Assy. Release the two dowels on the Input Tray Assy from the two holes on the scanner, and remove the Input Tray Assy.



Parts/Components must be removed in advance None Disassembly Procedure

SEPARATOR MODULE/PAPER FEED ROLLER 1. 2.

Input Tray Assy

Open the Input Tray Assy. Unlock the Top unit, and open it.

Input Tray Assy

Lock of Top unit

Top unit

Hole & Dowel

Figure 4-11. Removing the Input Tray Assy

Figure 4-12. Removing the Separator Module (1)

EPSON GT-S80/S50

3. 4.

Revision B

Disengage the two hooks on the Separate Module, and open the Separate Module. (See Figure 4-13.) Release the two dowels on the Separate Module, and remove the Separate Module from the scanner.

CAUTION

5.

Do not touch or damage the roller when removing the Paper Feed Roller.

Slide the Paper Feed Roller to the right as see n from the front, and remove the Paper Feed Roller from the scanner. Paper Feed Roller

Separator Module

Hook Dowel

Figure 4-13. Removing the Separator Module (2)

Figure 4-14. Removing the Paper Feed Roller

EPSON GT-S80/S50

REASSEMBLY

Revision B

When installing the Paper Feed Roller, first align the protrusion to the left as seen from the front, then attach the Paper Feed Roller.

SEPARATION PAD 1. 2. 3.

Open the Input Tray Assy. Unlock the Top unit, and open it. (See Figure 4-12.) Disengage the hook of the Separation Pad, and remove the Separation Pad from the Top unit.

Protrusion

Paper Feed Roller

Figure 4-15. Installing the Paper Feed Roller Separation Pad

Hook

Figure 4-16. Removing the Separation Pad

EPSON GT-S80/S50

REASSEMBLY

Revision B

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.

4.2.3 Switch Holder/ DC Cable Connector 



Parts/Components must be removed in advance None Disassembly Procedure

CAUTION

1. 2. 3.

Separation Pad


Place the scanner upside down. Remove the two screws that secure the Switch Holder. Disengage the two hooks and the four ribs of the Switch Holder, and detach the Switch Holder.

Groove

Figure 4-17. Installing the Separation Pad Switch Holder Base Cover

Hook Rib C.P.F.P. 3x8 (black) (6.0-6.5 Kgfcm)

Figure 4-18. Removing the Switch Holder (1)

EPSON GT-S80/S50

4. 5. 6.

Revision B

Release the DC Cable from the three ribs on the Switch Holder and the rib on the main body. (See Figure 4-19.) Disconnect the DC Cable from the connector (J2) on the Main Board Assy. (See Figure 4-19.) Slide the DC Cable connector in the direction of the arrow, and remove the DC Cable from the groove on the Switch Holder.

7. 8.

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.) Disconnect the Switch Harness from the connector (J1) on the Main Board Assy.

Main Board Assy J1

Main Board Assy

J2

Switch Harness

DC Cable connector Switch Holder

Rib

Figure 4-20. Removing the Switch Holder (3) Switch Holder

Figure 4-19. Removing the Switch Holder (2)

Rib 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. OK

NG

Figure 4-21. Installing the DC Cable Connector

EPSON GT-S80/S50

Revision B

4.2.4 Base Cover/Switch Cover/Switch Harness/Foot 



CAUTION

Parts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)



Disassembly Procedure

CAUTION

1. 2.



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.


Place the scanner upside down. Remove the four screws that secure the Base Cover. Bottom

Base Cover Foot

Hook

Figure 4-23. Locations of the hook on the the Base Cover 3. Base Cover

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. Rear

Base Cover

Foot

C.P.F.S. 3x6 (black) (6.0-6.5 Kgfcm)

Figure 4-22. Removing the Base Cover (1)

Hole

Flathead screwdriver

Figure 4-24. Removing the Base Cover Cover (2)

EPSON GT-S80/S50

4.

Revision B

Disengage the two hooks of the Switch Harness from inside the Base Cover, and remove the Switch Harness from the Base Cover.

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, 4-25, Figure 4-26.) 4-26.)

Switch Harness Metal Frame Assy

Bottom

Base Cover

Hook

Hole



Figure 4-26. Installing the Base Cover Cover (1) 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 (Figure 4-25) 4-25) of the Base Cover. Front

Dowel Rib Point A

Figure 4-25. Removing the Switch Switch Harness

Do not catch harnesses.

Figure 4-27. Installing the Base Cover Cover (2)

EPSON GT-S80/S50

Revision B

4.2.5 Top unit 

Parts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42) CHECK POINT





CAUTION

In the next step, avoid damaging the Anti-Static Brush when working. Please handle with care. Backside of Top unit

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)

Top unit

Anti-Static brush

Figure 4-29. 4-29. Anti-Static brush brush

Top unit

Figure 4-28. Configuration of the Top Top unit

EPSON GT-S80/S50



Revision B


3.

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

2.

Remove the screw at the rear of the scanner, and remove the metal clamp that secures the Transceiver harness. Rear side

Top analog harness

4. 5.

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.) Release the top analog harness from the clamp A and clamp B at the rear of the scanner. (See Figure 4-31.) Release the top digital harness from the clamp B at the rear of the scanner. Right side

Clamp A Top analog harness

Grounding wire of top analog harness

Transceiver harness

Grounding wire of top digital harness Top digital harness

Clamp B

Top digital harness

Main Board Assy Metal clamp


Figure 4-31. Removing the Top unit (2)



EPSON GT-S80/S50

Revision B

Remove the screw that s ecures 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. 8.

CAUTION

6. 7.


Place the scanner upside down. Release the top digital harness and the top analog harness from the clamp C and clamp D on the bottom of the sc anner.

Bottom Clamp E

Bottom Transceiver harness Clamp C

Top analog harness

Top digital harness Clamp F

Clamp D

RX harness (GT-S80 only)

Grounding wire of RX harness (GT-S80 only)

Relay connector (GT-S80 only)

Panel wire (GT-S80 only)


Grounding wire coming from Top unit



EPSON GT-S80/S50

Revision B

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.

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. Right side

Top unit

Bearing Shaft Top unit

Front

Shape of shaft

Metal Frame Assy

Left side

Shaft & bearing


Bearing Shaft Top unit

Shape of shaft

Figure 4-35. Installing the Top unit

EPSON GT-S80/S50

REASSEMBLY



Revision B

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.

REASSEMBLY



ADJUSTMENT REQUIRED

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

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.)

Grounding wire of top analog harness

Grounding wire of top digital harness C.P.F.S. 3x6 (black) (6.5-7.0 Kgfcm)



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

Grounding wire of RX harness

Grounding wire coming from Top unit C.P.F.S. 3x6 (black) (6.5-7.0 Kgfcm)

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

EPSON GT-S80/S50

Revision B

4.2.6 Main Board Assy 

GT-S80

Parts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)

CHECK POINT

J5

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)" .

J7

Main Board Assy

J13 J14 J6 J15 J8



Disassembly Procedure 1.

J10

Disconnect all the cables connected to the connectors on the Main Board Assy.

J11

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

GT-S80:Black

J11

Pickup motor

J13

Door Sensor

Black

3

J14

Transceiver harness

Blue

5

J15

Transceiver harness

White

3

GT-S50:White

J4

GT-S50

J5

J7

J2

Main Board Assy

J13 J14 J6 J15

4 J10 J11

J4

Note * :

J1

J1

J2

GT-S80 only

Figure 4-38. Connector position on the Main Board Assy

EPSON GT-S80/S50

CAUTION

2.

Revision B

[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.)  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. Main Board Assy

Shield Cover

Remove the nine screws that secure the Main Board Assy, and remove the Main Board Assy from the scanner. Hole

Rear side 

Shield Cover

Figure 4-40. Installing the Shield Cover (GT-S80 only) 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. Rear side

Main Board Assy

Point A

Grounding wire of bottom digital harness


Figure 4-39. Removing the Main Board Assy

Grounding wire of bottom analog harness C.P.F.S. 3x6 (black) (6.5-7.0 Kgfcm)

Figure 4-41. Installing the Grounding Wire ADJUSTMENT REQUIRED

After replacing the Main Board Assy, make the specified adjustments. (See Chapter 5 "ADJUSTMENT ")

EPSON GT-S80/S50

Revision B

4.2.7 Bottom Cover

3.



4.

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)

CHECK POINT



Disengage the two hooks on the Bottom Cover, and lift the Bottom Cover by about 5 cm. (See Figure 4-43.) 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.


RX harness


Disconnect the Door Sensor harness from the connector (J13) on the Main Board Assy. (See Figure 4-38.) Remove the three screws that secure the Bottom Cover.

Hole on Metal Frame Assy

Bottom Cover Bottom Cover

Lift it by about 5cm.

Metal Frame Assy Hook C.B.S. 3x10 (black) (6.5-7.0 Kgfcm)

Figure 4-42. Removing the Bottom Cover (1)

Figure 4-43. Removing the Bottom Cover (2)

EPSON GT-S80/S50

REASSEMBLY



Revision B

[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.) Bottom

REASSEMBLY



When installing the Bottom Cover, route the Door Sensor harness through the groove on the Metal Frame Assy. Door Sensor harness

Pickup motor

Carriage Assy (Bottom)

Hole on Metal Frame Assy Groove



Figure 4-45. Installing the Bottom Cover (2) When engaging the two hooks to the frame of the Metal Frame Assy, confirm it is firmly s ecured with a clicking sound. Metal Frame Assy

Bottom Cover

Hook To relay connector

RX harness

Figure 4-44. Installing the Bottom Cover (1)

Figure 4-46. Installing the Bottom Cover (3)

EPSON GT-S80/S50

4.2.8 Carriage Assy (Bottom) 



Revision B

7.

Parts/Components must be removed in advance Switch Holder/DC Cable Connector (p 40)/Input Tray Assy (p 37)/ Base Cover (p 42)

Disengage the hooks of the clamp C, D using the long-nose pliers, and re move the clamp C and clamp D. Right

Clamp C

Clamp D


CAUTION

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)

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.) Release the top analog harness from the clamp A and clamp B at the rear of the scanner. (See Figure 4-31.) Release the top digital harness from the clamp B at the rear of the scanner. (See Figure 4-31.)

3. 4.

CAUTION

5. 6.


Place the scanner upside down Release the top digital harness and the top analog harness from the clamp C and clamp D on the bottom of the sc anner. (See Figure 4-32.)

8. 9.

Figure 4-47. Removing the Carriage Assy (Bottom) (1) Loosen the screw that secures the tensioner on the right as seen from the front of the scanner. (See Figure 4-48.) Detach the extension spring from the tensioner using the long-nose pliers. Right

Extension spring

Tensioner

C.P.(S-P1) 3x6 (6.5-7.0 Kgfcm)

Figure 4-48. Removing the Carriage Assy (Bottom) (2)

EPSON GT-S80/S50

Revision B

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

Right

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

Timing Belt

Bottom

Clamp G

Bottom analog harness

Pinion gear of PF motor


CAUTION

Do not damage the pinion gear when removing the PF motor.


Figure 4-51. Removing the Carriage Assy (Bottom) (5) 11. Remove the two screws that sec ure the PF motor, and remove the PF motor while avoiding hitting the pinion gear to the hole on the Metal Frame.

Right

PF motor

Hole

Pinion gear

C.B.S. 3x6 (6.5-7.0 Kgfcm)


EPSON GT-S80/S50

CAUTION

 

Revision B

When removing the Carriage Assy, make sure not to put any scratches or dirt on the glass s urfaces. (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.)

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 Carria ge Assy (Bottom), and remove the Carriage Assy (Bottom). 

Bottom digital harness (J2, J5)



Bottom analog harness (J3)

Bottom analog harness Bottom digital harness Glass surface

Metal Frame Assy

Bottom

J3

J2

J5

FFC

Carriage Assy (Bottom)

Figure 4-53. Removing the Carriage Assy (Bottom) (7) Carriage Assy (Bottom) C.P.F.S. 3x12 (7.0-7.5 Kgfcm)


EPSON GT-S80/S50

REASSEMBLY



 

Revision B

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.

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)/




CAUTION

PF motor

1.

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.)

Remove the screw that secures the Ultra Sonic RX Board, and detach the Ultra Sonic RX Board from the Bottom Cover.

Ultra Sonic RX Board Connector



Figure 4-54. Installing the PF motor Secure the PF tensioner as follows: 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 longnose pliers. (See Figure 4-48.) 3. Tighten the screw to secure the tensioner. (See Figure 4-48.)

RX harness Bottom Cover

ADJUSTMENT REQUIRED

Shield Cover

Clamp H

After replacing the Carriage Assy (Bottom), make the specified adjustments. (See Chapter 5 "ADJUSTMENT")

Groove Positioning hole & dowel

C.B.P. 3x6 (black) (4.5-5.0 Kgfcm)

Figure 4-55. Removing the Ultra Sonic RX Board (1)

EPSON GT-S80/S50

Revision B

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)

4.

Remove the Ultra Sonic Sensor from the Bottom Cover.

Ultra Sonic Sensor Ultra Sonic Sensor

U lt ra S on ic RX B oa rd

R X h ar ne ss

Bottom Cover Groove

3.

Figure 4-56. Removing the Ultra Sonic RX Board (2) Remove the two screws that secure the Shield plate R/B, and remove the Shield plate R/B from the Bottom Cover.

Bottom Cover

Shield plate R/B


Figure 4-57. Removing the Ultra Sonic Sensor (1)

Figure 4-58. Removing the Ultra Sonic Sensor (2)

EPSON GT-S80/S50

REASSEMBLY



Revision B

When installing the Ultra Sonic Sensor, make sure to confirm it is attached correctly as shown below.

Ultra Sonic Sensor

OK



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.

Ultra Sonic Sensor

NG

Shield plate R/B

Figure 4-59. Installing the Ultra Sonic Sensor 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.

Grounding wire of RX harness

RX harness

Shield plate R/B

Groove Point B



Shield Cover

Standard Line



Figure 4-60. Installing the Shield Cover When installing the Ultra Sonic Sensor, route the harness of it through the groove on the Bottom Cover. (See Figure 4-58.)



Figure 4-61. Routing the RX harness 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.)

EPSON GT-S80/S50

REASSEMBLY



Revision B

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.

4.2.10 Door Sensor 





Transmitter

Receiver

TH

RH

Remove the screw that secures the Door Sensor, remove the Door Sensor from the Bottom Cover. Bottom Cover

Door Sensor

Ultra Sonic TX Board (p 71)

Ultra Sonic RX Board (p 56)

Top Cover Assy (p 74)

Bottom Cover (p 51) Rib

Figure 4-62. Installing the Ultra Sonic Sensor


Figure 4-63. Removing the Door Sensor

REASSEMBLY

When installing the Door Sensor, route the harness of Door Sensor through the rib on the Bottom Cover. (See Figure 4-63.)

EPSON GT-S80/S50

Revision B

4.2.11 Bottom Cover Mylar/Edge Guide 





2.

Slide the Edge Guides to both ends. Edge Guides

Remove the Bottom Cover Mylar from the Bottom Cover using a Tweezer. Back of Bottom Cover Bottom Cover Mylar

3.

Figure 4-65. Removing the Edge Guide (1) 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.

Bottom Cover

Figure 4-64. Removing the Bottom Cover Mylar

Back of Bottom Cover

Edge Guide Rack

Figure 4-66. Removing the Edge Guide (2)

Hook

EPSON GT-S80/S50

4.

Revision B

Pull out the two Edge Guides in the direction of the a rrows to remove them. REASSEMBLY



Top of Bottom Cover Edge Guide

When installing the spur gear, make sure to attach it while setting the two Edge Guide Racks in the middle. Edge Guide Rack

Spur gear

5. 6.

Figure 4-67. Removing the Edge Guide (3) Remove the screw that secures the spur gear, and remove the spur gear. (See Figure 4-68.) Remove the two Edge Guide Racks from the Bottom Cover.





Back of Bottom Cover Edge Guide Rack

Spur gear

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

Figure 4-68. Removing the Edge Guide Rack

Figure 4-69. Installing the Edge Guide Rack 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.

EPSON GT-S80/S50

REASSEMBLY



Revision B

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.

4.2.12 Hinge Cover 

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)




Rear of Bottom Cover Mylar Bottom Cover Mylar

Top

CAUTION

1.


Remove the two screws that secure the two Hinge Covers, and remove the two Hinge Covers.

Bottom Double-sided tape Top unit

Figure 4-70. Installing the Bottom Cover Mylar

Hinge Cover


Figure 4-71. Removing the Hinge Cover

EPSON GT-S80/S50

REASSEMBLY

Revision B

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. Right

4.2.13 Front Cover/LCM Board/Display Cover 

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)

Hinge Cover CHECK POINT




CAUTION

Hole Point A Point B


1.


Remove the seven screws that secure the Front Cover. Top unit

Left

Hinge Cover

Hole Point A Point B

Figure 4-72. Installing the Hinge Cover


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

EPSON GT-S80/S50

Revision B

2. 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.

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.

Front Cover Hole

Front Cover

Hook

Lock of Top unit Main body of Top unit



EPSON GT-S80/S50

3. 4.

Revision B

Pull out the panel wire from the hole of the Top unit. (See Figure 4-76.) 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.)

5. 6.

Remove the screw that secures the top digital harness. (See Figure 4-77.) Disconnect the top digital harness from the connector (J4) on the LCM Board, and remove the Front Cover.

Ferrite core J4

J2

Front Cover

LCM Board

LCM Board

Groove

Front Cover Panel wire Top digital harness Hole

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



EPSON GT-S80/S50

7.

Revision B

Remove the six screws that secure the LCM Board, and remove the LCM Board from the Front Cover.

LCM Board

Front Cover

8.

Push the point A of the Display Cover from the bottom side of the Front Cover to remove the Display Cover. Bottom

Front Cover

Display Cover

Positioning hole & dowel C.B.P. 3x8 (black) (4.5-5.0 Kgfcm) Point A

Figure 4-78. Removing the LCM Board Top

Display Cover

Double-sided tape

Figure 4-79. Removing the Display Cover

EPSON GT-S80/S50

REASSEMBLY





Revision B

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. Front Cover

Panel wire

LCM Board

Tray sensor

Groove





Tray sensor

Sensor lever

Figure 4-80. Installing the LCM Board

Figure 4-81. Routing the panel wire When installing the Front Cover, route the top digital harness as follows. (See Figure 4-77.) 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. When attaching the Display Cover, align it with the concave of the Front Cover and secure it with double-sided tape as s hown in Figure 4-79.

EPSON GT-S80/S50

Revision B

7

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

Decoration panel

Main body of Top unit

Front Cover OK

NG Gap

Decoration panel

Decoration panel

Front Cover

Front Cover

Top digital harness Front Cover

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

Figure 4-83. Installing the Front Cover (2)

EPSON GT-S80/S50

Revision B

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)




CAUTION

2. CAUTION


When removing the Carriage Assy, do not damage or contaminate the glass surface.

Remove the four screws that secure the Carriage Assy (Top), and remove the Carriage Assy (Top).

Carriage Assy (Top)

1.

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



Top digital harness (J2, J5)




Carriage Assy (Top)

Top digital harness


Figure 4-85. Removing the Carriage Assy (Top) (2)

Top analog harness

Figure 4-84. Removing the Carriage Assy (Top) (1)

EPSON GT-S80/S50

REASSEMBLY

Revision B

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.

4.2.15 Paper Path Sensor 

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)




CAUTION

J3

1. 2. Top analog harness

3. 4.

Hook Groove


Disconnect the cable of the Paper Path Sensor from the connector (J4) on the Ultra Sonic TX Board. (See Figure 4-88.) Release the two hooks of the Top Cover As sy, and remove the Paper Path Sensor from the Top Cover Assy.

Figure 4-86. Routing the top analog harness Route the top digital harness through the hook of the Top unit. (See Figure 4-87.) Connect the top digtial harness to the connector (J2,J5) on the board of the Carriage Assy (Top).

J4

Paper Path Sensor

Top digital harness J5

J2 Ultra Sonic TX Board

Top Cover Assy

Sensor lever Hook

Hook

Figure 4-87. Routing the top digital harness

Figure 4-88. Removing the Paper Path Sensor REASSEMBLY

After installing the Paper Path Sensor, check if the sensor lever moves smoothly. (See Figure 4-88.)

EPSON GT-S80/S50

Revision B

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) CHECK POINT



2.

Remove the screw that secures the Ultra Sonic TX Board, and remove the Ultra Sonic TX Board.

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)" .


CAUTION

Ultra Sonic TX Board


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

3. 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)

Positioning hole & dowel

Figure 4-90. Removing the Ultra Sonic TX Board (2) Release the two hooks of the Top Cover A ssy and remove the Ultra Sonic Sensor from the Top Cover Assy.

Ultra Sonic Sensor

Paper Detect sensor Transceiver harness Paper Path Sensor Sensor lever Ultra Sonic Sensor Hook Groove

Figure 4-91. Removing the Ultra Sonic Sensor Ultra Sonic TX Board

Figure 4-89. Removing the Ultra Sonic TX Board (1)

EPSON GT-S80/S50

REASSEMBLY



Revision B

When installing the Ultra Sonic Sensor, make sure to confirm it is attached correctly as shown below. Ultra Sonic Sensor

OK







Ultra Sonic Sensor

NG

Figure 4-92. Installing the Ultra Sonic Sensor 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.)

EPSON GT-S80/S50

Revision B

4.2.17 Metal Frame Assy 

Parts/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)




Release the bottom digital harness from the clamp H, and remove it from the Metal Frame Assy. Release the Bottom Analog Harness from the clamp A and H, and remove it from the Metal Frame Assy. Rear Bottom analog harness Clamp A

Clamp H


Metal Frame Assy

Figure 4-93. Removing the Metal Frame Assy

REASSEMBLY

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).

EPSON GT-S80/S50

Revision B

4.2.18 Top Cover Assy

2.

Remove the following parts from the Top Cover Assy.





Top digital harness



Top analog harness



Transceiver harness



Grounding wire



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)/Paper Path Sensor (p 70)/Ultra Sonic TX Board/Ultra Sonic Sensor (p 71) Disassembly Procedure

CAUTION

1.


Transceiver harness

Top Cover Assy

Release the eight hooks of the decoration panel, and rem ove the decoration panel from the Top Cover Assy. Top digital harness

Top Cover Assy

Grounding wire Top analog harness

Figure 4-95. Removing the Top Cover Assy (2)

Decoration panel Hook

Figure 4-94. Removing the Top Cover Assy (1)

EPSON GT-S80/S50

REASSEMBLY





Revision B

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).

Front of Top Cover Assy

REASSEMBLY



Confirm smooth movement of Paper Detect Sensor and Paper Path Sensor by pushing the levers after assembly. Paper Detect Sensor

Transceiver harness

Grounding wire Paper Path Sensor

Figure 4-97. Sensor Lever Groove Point A

Grounding wire

Bottom of Top Cover Assy Tip of grounding wire

Groove Anti-Static brush

Figure 4-96. Routing the transceiver harness 

For the routing of the Top Digital Harness and Top Analog Harness, see Figure 4-86, Figure 4-87.

CHAPTER

5 ADJUSTMENT

EPSON GT-S80/S50

Revision B

5.1 Adjustment Items and Overview This chapter describes how to carry out the adjustments which are required after disassem bly / assembly. CHECK POINT

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 Items The following tables indicate the adjustment items necessary for this product. Table 5-1. Adjustment Items Adjustment Item

Reading and writing EEPROM data

Shading adjustment

Find Edge Adjustment

Firmware version check

Purpose

Method Outline 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.

Performs 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.

Adjusts 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.

Checks the firmware version.

Reads out the firmware version using Adjustment Program.

• Adjustment Program

Updates firmware of the Main Board.

Updates firmware using Adjustment Program.


Main board


• Adjustment Program • Shading Chart (ASP code: 1509577) • Adjustment Program • Testing Chart (ASP code: 1509578)

• Latest firmware of the Main Board

Firmware update Panel

Tool

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.

Updates firmware related to the panel display.

Updates firmware using Adjustment Program.

• Adjustment Program • Latest firmware of the Panel

EPSON GT-S80/S50

Revision B

5.1.2 Required Adjustments after Removing/Replacing Parts

5.2 Adjustment Program Overview

The table below lists the required a djustments depending upon the parts being removed or replaced.

5.2.1 Operational Environment The operational environment for this Adjustment Program is as follows:

Table 5-2. Adjustment Items of Replacement Parts Adjustment Item Replacement Part Main Board Top Unit Carriage Assy (Top / Bottom)

Removal Replacement Removal Replacement Removal Replacement

EEPROM Data Copy

Shading Adjustment

--Required ---------

--Required Required Required --Required

Note : “Required”: Adjustment is required, “---”: Adjustment is not required

Find Edge Adjustment --Required Required Required --Required

OS : Windows Vista (32-bit) Windows XP Home/Professional Windows 2000 Professional I/F : USB 2.0

EPSON GT-S80/S50

Revision B

5.2.2 How to Use Adjustment Program CHECK POINT

The Adjustment Program for GT-S80 and the one for GT-50 are different. Make sure to use the program corresponding to your scanner.  GT-S80: GT-S80 RMA Tools.exe  GT-S50: GT-S50 RMA Tools.exe This section describes based on GT-S80, but also applies to GT-S50.

5.2.2.2 Starting up the Adjustment Program 1.

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.

5.2.2.1 File and folder structure of the Adjustment Program To install the Adjustment Program, uncompress the compressed file downloaded from TechExchange to a folder. The folder where the file is uncompressed is as follows:

Scanner is connected with the power on

Scanner is not connected or the power is off

Save latest firmware for updating to “Panel_FW” folder. Save latest firmware for updating to “Mainboard_FW” folder.

EEPROM data is saved

MainBoard FW button (p85)

F.Shading button (p83)

Panel FW button (p86)

EEPROM button (p80) FindEdge button (p84)

Exit button

Get FW ver. button (p85)

Figure 5-2. Main Menu Screen of the Adjustment Program Adjustment Program

Figure 5-1. File and Folder Configuration of the Adjustment Program

5.

Select the item to adjust, and carry out necessary adjustment.

EPSON GT-S80/S50

Revision B

5.3 Adjustment

3.

The status display (see Figure 5-3.) changes to “Date read from Unit”, and EEPROM data is displayed on EEPROM menu.

5.3.1 Reading and Writing EEPROM Data

Table 5-3. Details of EEPROM Menu Display

READING EEPROM DATA 1. 2.

Displayed Item

No.

Details

Press the “EEPROM” button on the main menu of the Adjustment Program. (See Figure 5-2.)

1

LastErrorCode

Error code of the last error

2

Lamp Main On Time*1

Accumulative time of LED lighting for main scanning

Press the “Read From EEPROM” button on EEPROM menu.

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

Read From EEPROM button (p80)

Write to File button (p81)

5

1

Cancel button

Read From File button (p82)

Status display “EEPROM from File or Machine” is displayed after reading EEPROM data.

Write to EEPROM button (p82)

6

2

7

3

8

12

9

10

11

13

14

Figure 5-3. EEPROM Menu Screen

4

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

First PC Connection Time

Show time and date (yyyy/mm/dd) of 1st connection to PC

13 14

---

Note *1 : *2 :

Status display

The unit of the lamp-on time is one minute.

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.

EPSON GT-S80/S50

Revision B

SAVING EEPROM DATA Table 5-4. Details of Latest Error Code Error Item

Error Code

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.

Error Description

33

Lamp Error (Main Lamp)

CR Assy (Bottom) LED error

34

Lamp Error (Sub Lamp)

CR Assy (Top) LED error

49

ADF Unit Cover Open

Top Unit open error

54

Paper Jam

Paper Jam error

Figure 5-4. Saving EEPROM Data as a File

EPSON GT-S80/S50

COPYING EEPROM DATA CAUTION

Revision B

7.

From the “EEPROM” folder, select the EEPROM data which was saved in step3 of saving EEPROM data (P81), and read the 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.  5.3.2 Shading Adjustment (P83)  5.3.3 Find Edge Adjustment (P84)

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.)

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.)

EPSON GT-S80/S50

Revision B

5.3.2 Shading Adjustment CHECK POINT





4.

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. Usage limit of Shading Chart

Flashing

30 feeds per chart

Figure 5-7. LCD Display While Carrying Out Shading Adjustment 5.

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:

The scanner starts reading the Shading Chart, and the following message is displayed on the LCD.

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

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

EPSON GT-S80/S50

Revision B

5.3.3 Find Edge Adjustment CHECK POINT





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. Usage limit of Testing Chart

CAUTION

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:

150 feeds per chart



For the find edge adjustment, restarting the scanner is not necessary.



Make sure to set the Testing Chart as shown below when setting it on the Input Tray Assy.

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.

Insert the chart in the direction of the arrow.

Figure 5-9. Find Edge Chart 

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.

Figure 5-12. Find Edge Adjustment

EPSON GT-S80/S50

Revision B

5.3.4 Firmware Version Check

5.3.5 Firmware Update

1.

Press the “Get FW Ver.” button on the main menu of the Adjustment Program. (See Figure 5-2.)

5.3.5.1 Firmware update of the Main Board

2.

The firmware version of the current Main Board on the connected scanner and its control Panel is displayed.

CAUTION

Firmware version of the Main Board Boot Version:xxxx Program Version:xxxx

Firmware version of the Panel LCM=xxxx LCMFW Version=xxxx

CHECK POINT

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. • Files with the extension of “brn”: 2 files • File with the extension of “ini”: 1 file

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 5-13. Firmware Version Check

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).)

EPSON GT-S80/S50

5.3.5.2 Firmware update of the Panel CAUTION

CHECK POINT

1.

Revision B

6.

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.

Message on computer

The files of the firmware for the Panel consist of the following 3 files. • Files with the extension of “bin”: 2 files • File with the extension of “ini”: 1 file

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

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.

LCD display

7.

Figure 5-16. LCD Display After Completing Firmware Update Execute the firmware version check to confirm the firmware is updated. (See 5.3.4 Firmware Version Check (P85).)

EPSON GT-S80/S50

5.4 Test Charts Maintenance 1.

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.

Revision B

CHAPTER

6 MAINTENANCE

EPSON GT-S80/S50

Revision B

6.1 Overview This chapter explains the maintenance work necessary to keep this product in the best condition and to prevent trouble in advance.

Document reading surfaces (glass parts)

6.1.1 Cleaning Clean 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.

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.



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 am ount 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.

Figure 6-1. Cleaning

EPSON GT-S80/S50

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

Revision B

CHAPTER

7 APPENDIX

EPSON GT-S80/S50

Revision B

7.1 Connectors

Board

The following table indicates the connector signal wiring on the electrical circuit boards of this product. LCM Board

7.1.1 Connector Reference Table Board

Connector

Description

Number of Pins GT- S80

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

J10

PF Motor

2 4

J11

Pick up Motor

4

J13

Door Sensor

3

J14

TX Board

5

J15 J2 Carriage Assy (Top) Board

3 Main Board

18 6

J5

2 Main Board

18

J3

6

J5

TX Board

---

J3

J2 Carriage Assy (Bottom) Board

GT- S5 0

2

J1

Ultra Sonic Sensor

2

---

J2

Main Board

J3

Paper Detect Sensor

4

J4

Paper Path Sensor

3

8

RX Board * Note * :

GT-S80 only

Connector

Description

Number of Pins GT- S8 0

GT- S50

3

---

J2

Panel Wire/ RX Harness/ RX Board

J4

Main Board

J1

Ultra Sonic Sensor

2

---

J2

LCM Board

2

---

6

EPSON GT-S80/S50

Revision B

7.1.2 Connector Arrangement Relay Connector

Carriage Assy (Top) Board

J2 J3

J2

J5

J4

Carriage Assy (Bottom) Board

J2

J1

Door Sensor

J14

J6

J15

J5

J2

TX Board

J1

Ultra Sonic Sensor

J3

Paper Detect Sensor

J4

Paper Path Sensor

Main Board J3

PF Motor

Ultra Sonic Sensor

J4

J5

J13 J2

RX Board

LCM Board

J7

J8

J10

J11 J1

J2

Switch Harness

DC Input

Pick up Motor

CHECK POINT

The part enclosed by a broken line is mounted only on GT-S80, not for GT-S50.

Figure 7-1. Diagram of Wiring Connectors

Epson GT-S80_GT-S50 Service Manual

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