User Manuals: Epson LX-850 Dot Matrix Printer

Manuals and User Guides for Epson LX-850 Dot Matrix Printer. We have 1 Epson LX-850 Dot Matrix Printer manual available for free PDF download: Technical Manual

Epson LX-850 Technical Manual

Epson LX-850 Technical Manual (176 pages)

Brand: Epson | Category: Printer | Size: 4.29 MB

Table of Contents

Rev.-A Chapter 1 General Description

7
Chapter 2 Principles of Operation

34
- Principles of Operation
  34
- List of Tables
  36
  - Overview
    37
- Connector Summary
  37
- Outline of Printer Mechanism Operation
  39
  - Sensors
    40
  - Printhead
    43
- Power Supply Circuit
  45
  - TA Filter Unit
    46
  - DC Power Supply Circuit
    49
  - DC Power Supply Circuit
    55
- Reset Circuit
  56
  - Power-On Reset
    56
  - Operation at Reset
    57
  - Power-Off Reset
    57
- Carriage Operation
  58
- Paper Feed
  71
- Printhead
  75
Chapter 3 Optional Equipment

83
- Optional Equipment
  83
- Interface Options
  85
- Cut Sheet Feeder C80612
  88
  - Cut Sheet Feeder C80612* Specifications
    89
    
    General Specifications
    89
    
    Paper Specifications
    89
    
    Printable Area
    90
    
    Dimensions and Weight
    91
  - Cut Sheet Feeder Operating Principles
    92
    
    Mechanism Operation
    93
  - Cut Sheet Feeder Disassembly and Reassembly
    94
  - Cut Sheet Feeder Preventive Maintenance
    98
    
    Cleaning
    98
    
    Lubrication
    98
- Pull Tractor C80006
  100
  - Pull Tractor Operation
    100
  - Pull Tractor Disassembly and Reassembly
    101
Chapter 4 Disassembly, Assembly, and Adjustment

104
- Disassembly and Reassembly
  109
  - Printhead Removal
    109
  - Removal of Casing
    111
    
    Upper Casing Removal
    111
    
    Control Panel (TAPNL) Removal
    113
  - Removal of Circuit Boards
    114
    
    TAMA Board Removal
    114
    
    TA Filter Unit Removal
    115
  - Removal of Printer Mechanism
    116
    
    Removal of Platen Unit and Paper Guide
    116
  - Disassembly of Printer Mechanism
    120
    
    Removal of the Paper-Feed Mechanism
    120
    
    Removal of Paper-Feed Motor, Release Lever, and
    122
    
    Release/Tractor Sensor
    123
    
    Removal of Paper-End Sensor
    124
    
    Disassembly of Platen Unit
    124
    
    Removal of Carriage Unit
    125
    
    Removal of Carriage Motor
    128
    
    Removal of Home-Position Sensor
    130
    
    Disassembly of Ribbon-Feed Mechanism
    130
    
    Disassembly of the Tractor Unit
    131
- A D J U S T M E N T
  133
  - Platen Gap Adjustment
    133
Chapter 5 Troubleshooting

135
- List of Figures
  135
- Troubleshooting
  135
- Printhead Removal
  136
  - General
    136
    
    Unit Replacement
    136
- TAMA Control Board Unit Repair
  146
  - Printer Mechanism Repair
    153
    
    Preventive Maintenance
    157
    
    Lubrication and Adhesive Application
    157

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