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EPSON 890_1280_1290 Service Manual (ebook)

EPSON 890_1280_1290 Service Manual (ebook)
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SKU SDT-EP-890SM-EB
 
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  • How to repair Epson Stylus Photo  890_1280_1290 Inkjet Printer?
  • How to maintain and fix your Inkjet Printer?
  • product description, operating principles,
  • troubleshooting, disassembly and assembly,
  • adjustment, maintenance, connector summary,
  • electrical circuit diagrams.

EPSON 890_1280_1290 Service Manual (ebook)

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EPSON 890_1280_1290 Service Manual (ebook)  Revision D

Confidential

CONTENTS

Chapter 1 PRODUCT DESCRIPTIONS
1.1 Overview ............................................................................................................ 11
1.1.1 Features ...................................................................................................... 11
1.1.2 Accessories, Consumable Products, and Options ...................................... 12
1.2 Basic Specifications .......................................................................................... 14
1.2.1 Printing Specification ................................................................................ 14
1.2.2 Control Code .............................................................................................. 14
1.2.3 Paper Feeding ............................................................................................ 14
1.2.4 Input Data Buffer ....................................................................................... 14
1.2.5 Paper Specifications ................................................................................... 15
1.2.5.1 EPSON Special Media ...................................................................... 15
1.2.6 Printing Area .............................................................................................. 17
1.2.6.1 Cut Sheet ........................................................................................... 17
1.2.6.2 Envelopes .......................................................................................... 18
1.2.7 Adjust Lever .............................................................................................. 18
1.2.8 Ink Cartridge .............................................................................................. 19
1.2.9 Electric Specification ................................................................................. 20
1.2.10 Reliability ................................................................................................ 20
1.2.11 Environmental Condition ......................................................................... 21
1.3 Interface ............................................................................................................. 22
1.3.1 Parallel Interface (Forward Channel) ........................................................ 22
1.3.2 Parallel Interface (Reserve Channel) ......................................................... 25
1.3.3 USB Interface ............................................................................................ 26
1.3.4 Prevention of Data Transfer Time-out ....................................................... 27
1.3.5 Interface Selection ..................................................................................... 27
1.3.6 IEEE1284.4 Protocol ................................................................................. 27
1.4 Operations ......................................................................................................... 28
1.4.1 Buttons ....................................................................................................... 28
1.4.2 Indicators ................................................................................................... 28
1.4.3 Panel Functions .......................................................................................... 28
1.4.4 Special Setting Mode ................................................................................. 29
1.4.5 Printer Initialization ................................................................................... 30
1.4.6 Initialization Value .................................................................................... 30
1.5 Dimension .......................................................................................................... 31
Chapter 2 OPERATING PRINCIPLES
2.1 Overview ............................................................................................................ 34
2.1.1 Printhead Mechanism ................................................................................ 35
2.1.2 Carriage Mechanism .................................................................................. 36
2.1.2.1 Carriage Motor (CR Motor) .............................................................. 36
2.1.2.2 Platen Gap (PG) /Parallelism Adjustment Mechanism ..................... 37
2.1.2.3 Carriage Home Position (HP) Detection ........................................... 37
2.1.3 Paper Feeding Mechanism ......................................................................... 37
2.1.3.1 CR Lock Mechanism ......................................................................... 39
2.1.4 Paper Loading Mechanism ........................................................................ 40
2.1.4.1 Drive Transmission to the ASF Unit ................................................. 40
2.1.4.2 Paper Loading Operation .................................................................. 41
2.1.4.3 Pump Mechanism .............................................................................. 42
2.1.4.4 Capping Mechanism .......................................................................... 43
2.2 Electrical Circuit Operating Principles .......................................................... 44
2.2.1 C378PSB/PSE Board ................................................................................. 44
2.2.1.1 Electrical Circuit ............................................................................... 44
2.2.1.2 Protection Circuits ............................................................................. 46
2.2.1.3 Power Supply Control Function ........................................................ 46
2.2.1.4 Energy Save Mode ............................................................................ 46
2.2.2 C393MAIN Board Circuit Operation Principles ....................................... 47
2.2.2.1 Printhead Driver Circuit .................................................................... 50
2.2.2.2 RTC (Real Time Clock)/ Reset/ EEPROM Circuit ........................... 51
2.2.2.3 Motor Driver Circuit ......................................................................... 52
2.2.2.4 ASF/Pump Motor Driver Circuit ....................................................... 57
2.2.2.5 Sensor Circuit .................................................................................... 58
Chapter 3 TROUBLESHOOTING
3.1 Overview ............................................................................................................ 61
3.1.1 Self-Diagnostic Function ........................................................................... 62
3.1.1.1 Troubleshooting with LED Error Indicators ..................................... 62
3.1.1.2 Error Conditions ................................................................................ 62
3.1.1.3 Remedies for Paper Out Error ........................................................... 65

3.1.1.4 Remedies for the Paper Jam Error ..................................................... 67
3.1.1.5 Remedies for No Ink Cartridge Error/Ink Cartridge Problem ........... 67
3.1.1.6 Remedies for Maintenance Request Error ......................................... 68
3.1.1.7 Remedies for Fatal Error ................................................................... 69
3.1.2 Isolating the Faulty Part on the Power Supply Board ................................ 72
3.1.3 Isolating the Faulty Part according to the Phenomenon ............................ 72
Chapter 4 DISASSEMBLY AND ASSEMBLY
4.1 Overview ............................................................................................................ 78
4.1.1 Precaution for Disassembling the Printer .................................................. 78
4.1.2 Tools .......................................................................................................... 79
4.1.3 Specifications for Screws .......................................................................... 80
4.1.4 Service Checks After Repair ..................................................................... 81
4.2 Disassembly Procedures ................................................................................... 82
4.2.1 HOUSING Removal .................................................................................. 83
4.2.2 Circuit Board Assembly Removal ............................................................. 84
4.2.3 Panel Unit Removal ................................................................................... 86
4.2.4 Printhead Unit Removal ............................................................................ 88
4.2.5 TRAY, ABSORBER ASSEMBLY Removal ............................................ 89
4.2.6 Ink Unit Removal ...................................................................................... 91
4.2.7 MOTOR ASSEMBLY, CR Removal ........................................................ 94
4.2.8 MOTOR ASSEMBLY, ASF Removal ...................................................... 95
4.2.9 DE Unit Removal ...................................................................................... 96
4.2.10 ASF Unit Removal .................................................................................. 99
4.2.10.1 SHAFT, ROLLER, LD Removal .................................................. 101
4.2.10.2 ROLLER ASSEMBLY, LD, RIGHT/LEFT Removal ................. 106
4.2.11 Carriage Unit Removal .......................................................................... 107
4.2.12 BOARD ASSEMBLY, ENCODER Removal ....................................... 109
4.2.13 ROLLER, PF Removal .......................................................................... 110
4.2.13.1 SCALE, PF Installation ................................................................. 113
4.2.14 MOTOR ASSEMBLY, PF Removal ..................................................... 116
4.2.15 PE Sensor Unit Removal ....................................................................... 117
Chapter 5 ADJUSTMENT
5.1 Overview .......................................................................................................... 119
5.1.1 Adjustment Items ..................................................................................... 119
5.1.2 Adjustment Tools ..................................................................................... 120
5.2 Adjustment ...................................................................................................... 121
5.2.1 Parallelism Adjustment ............................................................................ 121
5.2.1.1 Using PG Adjustment Tool ............................................................. 121
5.2.1.2 Using Thickness Gauge ................................................................... 124
5.2.2 Backlash Adjsutment ............................................................................ 125
5.2.3 Adjustment Program Feature ................................................................... 127
5.2.3.1 How to Install the Program ............................................................. 128
5.2.3.2 How to Uninstall the Program ......................................................... 128
5.2.4 Starting the Service Program ................................................................... 128
5.2.4.1 Adjusting Program Initial Setting ................................................... 128
5.3 Individual Adjustment Program ................................................................... 130
5.3.1 Head ID .................................................................................................... 130
5.3.1.1 Head ID Input ............................................................................... 130
5.3.1.2 Head ID Check ................................................................................ 132
5.3.2 Bi-Directional Adjustment .................................................................... 133
5.3.2.1 Input Bi-D Adjustment Value ...................................................... 135
5.3.2.2 Check Present Adjustment Data ...................................................... 136
5.3.3 Input/Check USB ID ............................................................................... 137
5.3.3.1 Input USB ID .................................................................................. 138
5.3.3.2 Check USB ID ................................................................................. 138
5.3.4 Maintenance ............................................................................................. 139
5.3.4.1 Head Cleaning Operation ................................................................ 139
5.3.5 Ink Charge Operation ............................................................................. 140
5.3.6 Refurbishment for DOA .......................................................................... 141
5.3.7 Protection Counter ................................................................................... 143
5.3.7.1 Check the Present Counter Value .................................................... 143
5.3.7.2 Clear the Protection Counter Value ................................................ 143
5.3.8 Appendix Items ........................................................................................ 145
5.3.8.1 CSIC Information ......................................................................... 145
5.3.8.2 EEPROM Data Check ................................................................... 146
5.3.8.3 Changing EEPROM Data .............................................................. 146
5.3.9 A4 Check Pattern Printing ....................................................................... 147
5.4 Sequential Repair Adjustment Program ...................................................... 149
5.4.1 Function ................................................................................................... 149
5.4.1.1 How to start the program ................................................................. 149
5.4.1.2 Printhead Removal .......................................................................... 150
5.4.1.3 Printhead Replacement .................................................................... 151
5.4.1.4 Main Board Replacement ................................................................ 152
5.4.1.5 Carriage Unit Replacement/ Removal ............................................. 152
5.4.1.6 CR Motor Replacement ................................................................... 152
5.4.1.7 Printer Mechanism Replacement .................................................... 152

5.4.1.8 Waste Ink Pad Replacement ............................................................ 152
5.4.1.9 Clogged Nozzle Recovery ............................................................... 152
Chapter 6 MAINTENANCE
6.1 Overview .......................................................................................................... 155
6.1.1 Cleaning ................................................................................................... 155
6.1.2 Service Maintenance ................................................................................ 155
6.1.2.1 Head Cleaning ................................................................................. 155
6.1.2.2 Maintenance Request Error Clear ................................................... 155
6.1.3 Lubrication ............................................................................................... 156
Chapter 7 APPENDIX
7.1 Connector Summary ...................................................................................... 166
7.1.1 Connector Alignment ............................................................................... 166
7.1.2 Connector Pin Assignment ...................................................................... 166
7.1.3 EEPROM Address Map ........................................................................... 169
7.2 Circuit Board Component Layout ................................................................ 174
7.3 Electrical Circuit Board Diagrams ............................................................... 179
7.4 Exploded Diagrams ........................................................................................ 186
7.4.1 Exploded Diagrams for Stylus PHOTO 890 ........................................... 186
7.4.2 Exploded Diagrams for Stylus PHOTO 1280/1290 ................................ 191
7.5 Parts List ......................................................................................................... 196
7.5.1 Parts List for Stylus PHOTO 890 ............................................................ 196
7.5.2 Parts List for Stylus PHOTO 1280/1290 ................................................. 201


 

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