Epson Series Perfection 1240U Series, Service Manual

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EPSON Perfection 1240U Revision A
Contents
Chapter 1 Product Description
1.1 Features ................................................................................................... 8
1.2 Product Description .................................................................................. 9
1.3 Interface Specifications .......................................................................... 12
1.3.1 USB Specifications........................................................................ 12
1.4 Control Codes......................................................................................... 13
1.5 Switches ................................................................................................. 14
1.6 Indicator Descriptions ............................................................................. 14
1.7 Error Indications ..................................................................................... 15
1.8 Manuscript Table .................................................................................... 16
Chapter 2 Operating Principles
2.1 Engine Mechanism ................................................................................. 18
2.1.1 Carriage Unit ................................................................................. 18
2.1.2 Carriage Move Mechanism ........................................................... 19
2.2 Control Circuit......................................................................................... 20
Chapter 3 Troubleshooting
3.1 Overview................................................................................................. 22
3.2 Self-Diagnostic Function......................................................................... 22
3.3 Troubleshooting...................................................................................... 23
Chapter 4 Assembly and Disassembly
4.1 Overview................................................................................................. 26
4.1.1 Precautions ................................................................................... 26
4.1.2 Tools.............................................................................................. 26
4.1.3 Screws........................................................................................... 26
4.2 Disassembly Procedures........................................................................ 27
4.2.1 Releasing the Carriage Lock ......................................................... 27
4.2.2 Document Cover Removal ............................................................ 28
4.2.3 Upper Housing Removal ............................................................... 29
4.2.4 Inverter Lamp / Inverter Board Removal ....................................... 30
4.2.5 Carriage Unit Removal .................................................................. 33
4.2.6 Carriage Motor / Timing Belt Removal .......................................... 36
4.2.7 Main Board Removal..................................................................... 38
4.2.8 Panel Board Removal ................................................................... 40
4.2.9 Carriage Rail Removal .................................................................. 41
4.2.10 Driven Pulley Removal ................................................................ 42
Chapter 5 Adjustment
Chapter 6 Maintenance
6.1 Overview ................................................................................................ 46
6.1.1 Cleaning ........................................................................................ 46
6.1.2 Lubrication..................................................................................... 46
Chapter 7 Appendix
7.1 Overview ................................................................................................ 48
7.1.1 Interconnection.............................................................................. 48
7.1.2 Connector Assignment .................................................................. 48
7.2 Circuit Diagram....................................................................................... 50
7.3 Parts List and Explode Diagrams ........................................................... 52
7.4 TPU; Parts List ....................................................................................... 55
7.5 Exploded Diagram for TPU .................................................................... 56