Epson 890N - FX B/W Dot-matrix Printer User Manual

EPSON FX-890/2190 Revision B
7
3.2.11 Electrical Noise ....................................................................................... 62
3.2.12 Fatal Error ............................................................................................... 63
3.3 Troubleshooting for Individual Units ............................................................. 64
3.3.1 Main Component Checking Point ............................................................ 64
Chapter 4 Disassembly and Assembly
4.1 Overview ............................................................................................................ 66
4.1.1 Disassembly Precautions .......................................................................... 66
4.1.2 Tools and Instruments ............................................................................... 66
4.1.3 Service Check After Repair ...................................................................... 67
4.1.3.1 Abbreviations for Small Parts ........................................................... 68
4.2 Main Components Disassembly ...................................................................... 69
4.2.1 Pre-disassembly Procedures ..................................................................... 70
4.2.2 Upper Housing .......................................................................................... 72
4.2.3 C524MAIN Board .................................................................................... 74
4.2.4 C524PSB/PSE/PSH Board ....................................................................... 76
4.3 Printer Mechanism Disassembly ..................................................................... 77
4.3.1 Printhead ................................................................................................... 77
4.3.2 HP (Home Position) Detector ................................................................... 78
4.3.3 Platen ........................................................................................................ 79
4.3.4 Printer Mechanism .................................................................................... 80
4.3.5 CR Motor .................................................................................................. 81
4.3.6 PF Motor ................................................................................................... 83
4.3.7 PF Gear Train ........................................................................................... 84
4.3.8 PG (Platen Gap) Detector ......................................................................... 86
4.3.9 Release Detector ....................................................................................... 86
4.3.10 Front PE (Paper End) Detector ............................................................... 87
4.3.11 Rear PE Detector .................................................................................... 87
4.3.12 Carriage Assembly .................................................................................. 88
4.3.13 Rear Paper Guide Assembly ................................................................... 90
4.3.14 Ribbon Drive (RD) Assembly ................................................................ 92
Chapter 5 Adjustment
5.1 Adjustment Overview ...................................................................................... 94
5.1.1 Required Adjustment ................................................................................ 94
5.1.2 Adjustment Tools ...................................................................................... 94
5.2 Adjusting and Resetting the Printer ............................................................... 95
5.2.1 Platen Gap Adjustment ............................................................................. 95
5.3 Adjustment Program ....................................................................................... 97
5.3.1 Preparation ................................................................................................ 97
5.3.1.1 System Requirement ......................................................................... 97
5.3.1.2 Installation ......................................................................................... 97
5.3.1.3 Running the Program ........................................................................ 97
Chapter 6 Maintenance
6.1 Overview ............................................................................................................ 99
6.1.1 Preventive Maintenance ........................................................................... 99
6.2 Lubrication ...................................................................................................... 100
Chapter 7 Appendix
7.1 Connector Summary ...................................................................................... 105
7.2 Electric Circuit Diagrams .............................................................................. 108
7.3 Exploded Diagrams ........................................................................................ 114
7.4 Parts List ......................................................................................................... 122

Epson 890N - FX B/W Dot-matrix Printer Specifications

General

Brand	Epson
Model	890N - FX B/W Dot-matrix Printer
Category	Printer
Language	English