Epson GT-1200 Manuals

Manuals and User Guides for Epson GT-1200. We have 1 Epson GT-1200 manual available for free PDF download: Service Manual

Epson GT-1200 Service Manual

Epson GT-1200 Service Manual (157 pages)

Color Image Scanner

Brand: Epson | Category: Scanner | Size: 5.28 MB

Table of Contents

Section 1

7
- Table of Contents
  7
- Product Descriptions
  
  10
  - Overview
    11
  - Specification
    11
  - Interface Specification
    14
  - Control Code
    15
  - Operation Specifications
    16
    
    LED Specification
    16
    
    Switch Specification
    16
    
    Error Indication
    17
    
    Switch Setting
    17
    
    Readable Area
    18
    
    Transportation Screw
    18
- Operating Principles
  
  19
- Troubleshooting
  
  25
  - Overview
    26
    
    Error Detection by the Self-Diagnostic Function
    26
    
    Check Points for Abnormal Phenomenon
    27
    
    Test Points
    27
    
    Troubleshooting
    27
    
    Power Supply Board (B054PSH Board)
    33
    
    Troubleshooting for Electrical Circuit
    33
    
    Control Circuit Board (B054MAIN Board)
    34
- Disassembly and Assembly
  
  36
  - Overview
    37
    
    Screws
    37
    
    Tools
    37
  - Disassembly Procedures
    38
    
    Electrical Circuit Removal
    39
    
    EPROM Replacement
    39
    
    MAIN/B054PSH Board Removal
    40
    
    Scanner Body Disassembly
    41
    
    Upper Housing Removal
    41
    
    Scanner Mechanism Removal
    42
    
    Panel Board Assembly Removal
    43
    
    Scanner Mechanism Disassembly
    43
    
    Sub Board Assembly Removal
    44
    
    HP Sensor (CR) Removal
    45
    
    CR Motor Assembly Removal
    46
    
    Glass Frame Assembly Removal and Pre-Operation
    47
    
    Lamp Assembly and Inverter Board Assembly Removal
    50
    
    HP (AF) Sensor Removal
    52
    
    AF Motor Assembly Removal
    53
    
    AF Motor Assembly Installation
    54
- Adjustment
  
  55
  - Overview
    56
  - Overview
    58
    
    Cleaning
    58
    
    Lubrication
    58
- Appendix
  
  59
  - Overview
    60
    
    Connector Pin Assignment
    60
    
    Connector Summary
    60
  - Component Layout
    65
  - Circuit Diagrams
    67
  - Exploded Diagrams
    69
Section 2

76
- Product Descriptions
  
  80
  - Features
    81
  - Product Description
    81
- Operating Principles
  
  85
  - Overview
    86
    
    ADF Mechanism
    86
    
    Electrical Circuit
    97
    
    Transmission Circuit
    97
    
    Document Sensor (Empty Sensor) Circuit
    98
    
    Paper Size Detection Circuit
    98
    
    Paper Feeding Motor Encoder Sensor Circuit
    99
    
    Registration Sensor Circuit
    99
    
    Sensor Circuits
    100
    
    Reset Circuit
    101
    
    Switch Circuits
    101
    
    Paper Feed Motor Driver Circuit
    102
    
    Transportation/Paper Eject/Reverse Motor Driver Circuits
    103
    
    Feeding Solenoid/Reverse Solenoid Sensor Circuits
    104
    
    Rush Current Limitation Circuit
    104
    
    EEPROM Transmission/Write Circuit
    105
- Troubleshooting
  
  106
  - Overview
    107
    
    Test Mode Overview
    107
    
    Reverse Feeding Test Mode
    108
    
    Single Feeding Test Mode
    108
    
    Reverse Feeding Without Paper Aging Test Mode
    109
    
    Single Feeding Without Paper Aging Test Mode
    109
    
    Motor Line Output Test Mode
    110
    
    Solenoid Line Output Test Mode
    110
    
    Motor/Solenoid Internal Coil Resistance
    111
    
    Transportation Motor Check Points
    111
    
    Paper Eject/Reverse Motor Check Point
    112
    
    Paper Size Sensor
    112
    
    Solenoid Check Point
    112
- Disassembly and Assembly
  
  113
  - Overview
    114
    
    Screws
    114
    
    Tools
    114
  - Disassembly Procedure
    115
    
    Paper Feed Tray Removal
    115
    
    Control Board Unit Removal
    116
    
    Transportation Belt Unit Removal
    117
    
    Paper Feed Unit Removal
    118
    
    Paper Eject/Reverse Unit Removal
    119
    
    Transportation Belt Drive Motor Removal
    120
    
    Paper Feed Motor Unit Removal
    121
    
    Registration/Timing Sensor Removal
    122
    
    Paper Eject/Reverse Motor Unit Removal
    123
    
    Paper Eject Sensor Removal
    124
- Adjustment
  
  125
  - Overview
    126
    
    Adjustment Tools
    126
    
    Mechanical Adjustment
    126
    
    Flapper Solenoid Installation Position Adjustment
    127
    
    Separation Plate Gap Adjustment
    128
    
    Belt Tension Adjustment
    129
    
    Magnet Catch Installation Position Adjustment
    129
    
    Micro Switch Installation Position Adjustment
    130
    
    Skew Correction Adjustment
    131
    
    Electrical Adjustment
    132
    
    Sensor Adjustment
    132
    
    EEPROM Initialize and Sensor Adjustment
    134
    
    Scan Stop Position Adjustment
    134
- Maintenance
  
  135
  - Overview
    136
    
    Cleaning
    136
    
    Cleaning Points
    137
    
    Lubrication
    142
    
    Adhesion
    150
- Appendix
  
  152
  - Exploded Diagrams
    155

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