Epson GT-12000- User Manual

Epson GT-12000

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Table of Contents:

  • Page 2 – SERVICE MANUAL; Color Image Scanner
  • Page 3 – NOTICE; The contents of this manual are subject to change without notice.
  • Page 4 – PRECAUTIONS; DANGER; ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.; WARNING; PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.
  • Page 5 – PREFACE; Provides a general overview and specifications of the product.
  • Page 6 – REVISION STATUS; Date; All
  • Page 7 – TABLE OF CONTENTS; PRODUCT DESCRIPTIONS
  • Page 10 – C H A P T E R
  • Page 12 – Product Descriptions
  • Page 13 – Operation under direct sunlight or near
  • Page 14 – INTERFACE SPECIFICATION
  • Page 16 – OPERATION SPECIFICATIONS; “OPERATE “; Turns on and off the scanner.; OPERATE; Comes On when an error has occurred.
  • Page 17 – Table 1-4. Error Types and Corresponding Indications
  • Page 18 – Sub Scan Direction; Maximum Readable Area
  • Page 19 – OPERATING PRINCIPLES
  • Page 20 – Operating Principles; GENERAL DESCRIPTION; The EPSON GT-12000 is mainly composed of the following units:
  • Page 21 – MECHANISM OPERATING PRINCIPLES
  • Page 22 – ELECTRICAL CIRCUIT OPERATIONS; This section describes the electrical circuit of the GT-12000.
  • Page 24 – Logic power lines; Figure 2-4. Voltage Doubler Rectifier Circuit Operation
  • Page 25 – TROUBLESHOOTING
  • Page 26 – The lamp does not light.; Option Error; Sets the status bit “7”.
  • Page 27 – CAUTION
  • Page 28 – Troubleshooting; Start
  • Page 32 – The mechnasim is
  • Page 33 – Troubleshooting for Electrical Circuit; Phenomenon; Waveform at the drain
  • Page 34 – Reset IC is defective.
  • Page 35 – CR does not stop at the home
  • Page 36 – DISASSEMBLY AND ASSEMBLY
  • Page 37 – Disassembly and Assembly; Description
  • Page 38 – DISASSEMBLY PROCEDURES
  • Page 39 – T a k e o u t
  • Page 40 – then remove the top shield.; and the connector CN5 on the MAIN board; and remove the power supply board.; S c r e w L o c k S c r e w
  • Page 41 – Lift up the upper housing to remove it.
  • Page 42 – ) Remove the key tops for the power switch; Front Side of the Scanner
  • Page 43 – Panel Board Assembly; Figure 4-10. Panel Board Assembly Removal
  • Page 44 – Sub Board Assembly
  • Page 46 – Disconnect the cable for the motor from the relay connector and; Bottom of the Scanner Facing Upward
  • Page 47 – Set the scanner on a stable, level table.
  • Page 48 – Remove 9 screws and remove the glass frame assembly. The screws; Note: Directions are described when the scanner is viewed from; Figure 4-16. Glass Frame Assembly Removal
  • Page 49 – glass frame assembly.; G l a s s F r a m e A s s e m b l y; S c a n n e r F r o n t S i d e; Determining the Glass Frame Assembling Installation position
  • Page 50 – where the front and rear frames are indented.); CR M
  • Page 51 – H o o k; Lamp Assembly and Inverter Board Assembly Removal
  • Page 52 – covers the AF drive mechanism and remove the cover.; Figure 4-20. AF Drive Mechanism Cover Removal; Rotate this pulley manually.
  • Page 53 – spring plate and fixing tension plate to loosen the timing belt.; Tension Plate Assembly; Figure 4-22. Tension Plate Assembly Removal
  • Page 55 – ADJUSTMENT
  • Page 56 – Adjustment
  • Page 57 – MAINTENANCE
  • Page 58 – Maintenance
  • Page 59 – APPENDIX
  • Page 60 – Appendix; S c a n n e r M e c h a n i s m; Board
  • Page 69 – EXPLODED DIAGRAMS
  • Page 81 – Supports large document up to A3 size; PRODUCT DESCRIPTION; Page transportation & duplex scanning type
  • Page 82 – Accuracy in top position:; D o c u m e n t; Applicable document
  • Page 83 – Insulation resistance:; ENVIRONMENTAL CONDITION; Without condensation
  • Page 84 – Figure 1-2. External Dimensions of the ADF
  • Page 87 – Document is set in the paper feed tray.
  • Page 88 – The document is transported until the rear edge passed the
  • Page 89 – Transportation motor rotates backward to feed back the fed
  • Page 90 – The ADF sends the operation complete signal to the scanner when
  • Page 91 – The document is reversed.
  • Page 93 – The transportation motor rotates backward and then the paper
  • Page 95 – The transportation motor rotates backward and then the paper
  • Page 96 – According to the ejection command from the scanner, the scanner
  • Page 97 – Figure 2-42. Transmission Circuit Block Diagram
  • Page 98 – Figure 2-43. Document Width Detection Circuit Block Diagram; Figure 2-44. Document Sensor Circuit Block Diagram
  • Page 99 – Registration operation; Paper Feeding Motor Encoder Sensor Circuit Block Diagram; Figure 2-46. Registration Sensor Circuit Block Diagram
  • Page 100 – Timing Sensor Circuit / Reverse Sensor Circuit Block Diagrams
  • Page 101 – Resets when 5 V is at an abnormally low level.
  • Page 103 – Circuits; Transportation & Paper Eject/Reverse Motor
  • Page 104 – Figure 2-52. Solenoid Driver Circuit Block Diagram; Figure 2-53 Rush Current Limitation Circuit
  • Page 105 – Following values can be written into the EEPROM of this ADF:
  • Page 107 – R e m o v e t h e s l i d e c o v e r , t h e n r e m o v e t h e; Test Mode; Single feeding mode; Table 3-2. Error Indication during the Test Modes; Test is done without any error.
  • Page 108 – O n
  • Page 111 – Figure 3-2 shows the internal; Figure 3-2. Internal Connection of the Transportation Motor
  • Page 112 – connection is shown below.; Figure 3-4. Internal Connection of the Reverse Motor; Shutter weight solenoid; Document Size and Corresponding VR Output
  • Page 114 – Tool Name
  • Page 115 – DISASSEMBLY PROCEDURE; size sensor from the relay connector.; Screws
  • Page 116 – Remove 2 screws and remove the control board unit.; Shield Cover
  • Page 117 – Transportation Belt Unit; Figure 4-5. Transportation Belt Unit Fixing Position
  • Page 119 – securing the GND line.; Screw fixing the GND line
  • Page 120 – Transportation Belt Drive Motor Removal; from the tension roller holder plate.; Figure 4-11. Transportation Belt Drive Motor Removal
  • Page 121 – Remove 4 fixing screws and remove the paper feed motor unit.; Screw; Figure 4-13. Paper Feed Motor Unit Removal
  • Page 122 – From each of the right and left sides of the paper; Figure 4-14. Paper Guide Installation Position
  • Page 124 – remove the paper eject guide.
  • Page 126 – Adjustment items
  • Page 127 – Flapper solenoid is removed.; Figure 5-1. Flapper Solenoid Installation Position Adjustment
  • Page 128 – Separation plate is removed.; T o p V i e w; Figure 5-2. Separation Plate Gap Adjustment
  • Page 129 – Screws securing the DF supporting plate are loosened.; Install the ADF to the scanner.; Figure 5-4. Magnet Catch Installation Position Adjustment
  • Page 130 – Micro switch is removed.
  • Page 131 – A D F F i x i n g S c r e w; Figure 5-6. Direction for Moving the Screw; Figure 5-7. Adjusting using the Hinge Base
  • Page 132 – The Control board unit is replaced.
  • Page 133 – O N; LED indication
  • Page 134 – Set the ADF on the scanner.; Table 5-5. Switch Setting and Corresponding Shifting Length
  • Page 136 – Name
  • Page 137 – Figure 6-2. Rollers and Registration Sensor
  • Page 138 – Transportation Belt; Figure 6-3. Transportation Belt Cleaning; Reverse Roller
  • Page 139 – Paper Eject Roller
  • Page 140 – Timing Sensor and Reflection Plate
  • Page 142 – This section gives information on where to lubricate in the ADF.; Cutouts in the registration links which slide along the; V i e w A
  • Page 143 – holder
  • Page 144 – mg each
  • Page 146 – Note: Do not lubricate the external surface of the eject roller.; E j e c t R o l l e r
  • Page 147 – Note: Do not lubricate the external surface of the reverse roller.
  • Page 150 – This section provides adhering points in the ADF.
  • Page 151 – Do not apply any adhesives to the brush.
  • Page 153 – CONNECTOR SUMMARY
  • Page 155 – EXPLODED DIAGRAMS
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EPSON

EPSON

EPSON France S.A.

SERVICE MANUAL

GT-1200

PRODUIT

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Summary

Page 2 - SERVICE MANUAL; Color Image Scanner

SERVICE MANUAL Color Image Scanner EPSON GT-12000 4008511 ®

Page 3 - NOTICE; The contents of this manual are subject to change without notice.

NOTICE n All rights reserved. No part of this manual may be reproduced, stored in a retrieval system, or transmitted in any form or by a ny means, electronic,mechanical, photocopying, recording, or otherwise, without the prior written permission of SEIKO EPSON CORPORATION. n The contents of this man...

Page 4 - PRECAUTIONS; DANGER; ELECTRONICS TECHNICIANS IN THEIR LINE OF WORK.; WARNING; PRINTED CIRCUIT BOARDS AND/OR INDIVIDUAL CHIPS.

PRECAUTIONS Precautionary notations throughout the text are categorized relative to 1)Personal injury and 2) damage to equipment. DANGER Signals a precaution which, if ignored, could result in serious or fatal personal injury. Great caution should be exercised in performingprocedures preceded by DAN...

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