User Manuals: Oki Microline 391-Plus Dot Matrix Printer

Manuals and User Guides for Oki Microline 391-Plus Dot Matrix Printer. We have 1 Oki Microline 391-Plus Dot Matrix Printer manual available for free PDF download: Service Manual

Oki Microline 391-Plus Service Manual

Oki Microline 391-Plus Service Manual (276 pages)

Dot Matrix Printers

Brand: Oki | Category: Printer | Size: 2 MB

Table of Contents

Table of Contents
3
About this Manual

7
1 Product Specifications

8
- Compatibility - Microline 390/391 Vs. Microline
  9
- Product Specifications
  14
- Paper Specifications
  18
- Physical Specifications
  21
- Power Requirements
  22
- Environmental Requirements
  23
- Agency Approvals
  24
- Options
  25
- Consumables
  26
- Memory Specifications
  27
- Reliability Specifications
  28
2 Principles of Operation

29
- Compatibility - Microline 390/391 Vs. Microline
  30
- Circuit Board Description
  35
- Block Diagram (Microline 390/391)
  38
- Block Diagram (Microline 390/391-Plus)
  39
- Electrical Operation - Initialization
  40
- Interface Control
  41
- Print Head Drive Circuit
  42
- Spacing Operation
  43
- Line Feed
  45
- Alarm Circuits
  46
- Space Mechanism / Operation
  50
- Head Gap Adjusting Mechanism
  52
- Ribbon Drive Mechanism / Operation
  56
- Paper Feed Mechanism
  58
- Paper-End Detection Mechanism
  61
- Semi-Automatic Sheet Feeder (SASF) Operation
  63
- Release Lever Operation
  64
3 Maintenance & Disassembly

66
- Maintenance - General Information
  66
- Maintenance Tools
  67
- Maintenance Precautions
  68
- Disassembly/Assembly Procedures
  69
- Operator Panel Assembly
  71
  - Preliminary Items
    75
  - Separator Assembly
    76
  - Printhead Assembly
    78
  - Upper Cover Assembly
    80
- Control Board - Rev C
  85
- IC Card (B) Panel
  89
- Transformer Revs a and B
  90
- Filter Assembly
  94
- Power Supply Board Revs a and B
  96
- Power Interconnect Module / Cable Guide - Revs a
  100
- Power Interconnect Module / Cable Guide - Rev C
  100
- Indicator Assembly (Bail Bar Assembly)
  104
- Head Cable Access Cover and Connection Board
  107
- Ribbon Feed Gear Assembly
  109
- Space Motor Assembly
  112
- Carriage Frame Assembly
  114
- Space Rack
  117
- Guide Rail
  119
- Platen Assembly
  121
- Line Feed Motor and Gear Line Feed Motor
  123
- Line Feed Motor Interconnect Module
  127
- Reset Spring, Change Gear, and Idler Gear
  128
- Release Lever
  130
- Paper Pressure Guide
  131
- Pressure Roller Assembly
  134
- Tractor Assembly
  136
- Sensor Lever
  138
- Paper End (B) Lever
  139
- Main Chassis Assembly
  141
- ADJUSTMENTS General Information
  142
- Printhead Gap Adjustment
  143
- Cleaning
  146
- Lubrication
  148
4 Failure & Repair Analysis

151
- Overview - Introduction
  151
- Compatibility - Microline 390/391 Vs. Microline
  152
- Troubleshooting Updates
  157
- Reporting Problems
  158
- Troubleshooting Tips
  160
- Fault Alarms
  162
- Repair Analysis Procedures - Using the RAPS
  169
- RAP Index
  170
- Troubleshooting Cautions
  171
- RAP 01: Operator Panel Lamps Do Not Light
  172
- RAP 02: Abnormal Spacing
  174
- RAP 03: Wrong or Missing Characters / Dots on Output
  176
- RAP 04: Line Feed Problems
  178
- RAP 05: Malfunction of Operator Panel Switch(Es)
  180
- RAP 06: Parallel Interface Does Not Receive Data
  181
- RAP 07: Serial Interface Does Not Receive Data
  182
- Hexadecimal Dump
  183
- Resistance / Service Checks - Index to Charts
  184
- Printhead
  184
- Space Motor
  184
- Line Feed Motor
  184
- Operator Panel Board
  184
- Control Board
  194
- Printer Tests - General Information
  195
- Rolling ASCII Print Test
  195
- Font Sample Test
  195
- Serial Interface Loopback Test
  195
- Menu Operation
  202
- Top of Form
  204
- Paper Park
  205
- Forms Tear off
  206
- Board Reference Charts - General Information
  208
- A.1.02 Compatibility - Microline 390/391 Vs. Microline
  209
- Index to Charts - Microline 390/391: Rev a and B
  214
- Control Board (SKRB) - Rev a and B
  217
- Control Board (SKRA) - Rev C and "Plus" Printers
  219
- Power Supply (PAII) - Rev a and B
  221
- Power Supply (SUII) - Rev C and "Plus" Printers
  224
- A.2.05 Filter Assembly
  226
- Operator Panel (LXSP) - Microline
  228
- Operator Panel (LXSP-5) - Microline 390/391-Plus
  229
- A.2.08 Interconnect Board (SRBS)
  230
- RS232-C Serial Interface (LXHI)
  231
B Illustrated Parts Listing

233
- Illustrated Parts Listing - General Information
  233
- Definitions of Terms
  234
  - B.1.02 Definitions of Terms
    234
  - B.1.03 Compatibility - Microline 390/391 Vs. Microline
    236
- 390/391-Plus
  238
- Parts Ordering Information
  240
- Covers
  241
- Electrical Components - Rev a and B
  241
- Electrical Components - Rev C
  241
- Printer Mechanism - Rev a and B (1 of 2)
  241
- Printer Mechanism - Rev a and B (2 of 2)
  241
- Printer Mechanism - Rev C (1 of 2)
  241
- Printer Mechanism - Rev C (2 of 2)
  241
- Operator Panel
  267
- B.2.10 Tractor Assembly
  268
- Options
  270
- B.2.11 Options
  270
- Consumables
  272
- B.2.12 Consumables
  272
- Packaging
  274
- B.2.13 Packaging
  274
- Documentation
  276
- B.2.14 Documentation
  276

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