OKIDATA ML1120 Manuals

OKIDATA ML1120 Manuals

Manuals and User Guides for OKIDATA ML1120. We have 1 OKIDATA ML1120 manual available for free PDF download: Maintenance Manual

OKIDATA ML1120 Maintenance Manual

OKIDATA ML1120 Maintenance Manual (83 pages)

Oki Data Impact printer Maintenance Manual

Brand: OKIDATA | Category: Printer | Size: 2.71 MB

Table of Contents

Maintenance Manual
1
Table of Contents
4
1 Configuration

6
- Standard Printer Configuration
  6
2 Operation

7
- Summary
  7
  - Circuit Operation (See Figure 1)
    8
  - CPU and Peripheral Circuits
    8
  - Controlling the Interface
    10
  - Initializing Operation
    10
  - Print Head Control Drive Circuit
    10
  - Alarm Circuit
    11
  - Line Feed
    11
  - Paper-End Detect Circuit
    11
  - Power Source Unit
    11
  - Spacing
    11
- Mechanical Operation
  12
3 Assembly/Disassembly

28
- Precaution for Parts Replacement
  28
- Service Tools
  29
- Disassembly/Reassembly Procedure
  30
  - Ribbon Protector
    32
  - Printhead
    33
  - Pull-Up Roller Assy
    34
  - Upper Cover Assy, Access Cover Assy and Sheet Guide Assy
    35
  - Platen Assy
    36
  - Printer Unit
    37
  - Carriage Cable, Homing Sensor
    38
  - Idle-Pulley
    39
  - Ribbon Feed Assy
    40
  - Stepping Motor (Space)
    41
  - LF Motor
    42
  - Gap Sensor Cable, Gap SW and Continuous-Form/Cut-Sheet SW
    43
  - Slider Pice-Slider
    44
  - Mini Pitch Belt
    45
  - Paper Pan Assy, Roller Assy
    46
  - Bottom Sensor, Photo Interrupter and Sensor Cord (6P)
    47
  - Operation Panel Board and Operation Panel Cord
    48
  - Control Board Assy
    49
  - Power Supply Assy
    50
4 Adjustment

51
5 Cleaning and Lubrication

59
- Cleaning
  59
- Lubrication
  60
6 Troubleshooting and Repair

66
- Items to Check before Repair
  66
7 Program Update

76
8 Parts Replaced Periodically

79
Appendix A Pcb Layout

80
Appendix B Circuit Symbols

82

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