OKIDATA ML380 Manuals

OKIDATA ML380 Manuals

Manuals and User Guides for OKIDATA ML380. We have 1 OKIDATA ML380 manual available for free PDF download: Service Manual

OKIDATA ML380 Service Manual

OKIDATA ML380 Service Manual (205 pages)

Dot Matrix Printer

Brand: OKIDATA | Category: Printer | Size: 1.77 MB

Table of Contents

Table of Contents
3
About this Manual

7
- Manual Copyright
  7
1 Product Specifications

8
- Overview
  8
- Physical Specifications
  9
- Power Requirements
  10
- Environmental Conditions
  11
- Agency Approvals
  12
- Operational Specifications
  13
- Paper Specifications
  17
- Memory Specifications
  19
- Consumables
  20
- Options
  21
- Reliability
  23
2 Principles of Operation

24
- Microprocessor and Peripheral Circuits
  25
- Initialization
  27
- Interface Control
  28
- Printhead Drive Circuit
  29
- Spacing Drive Circuit
  30
- Line Feed Circuit
  31
- Alarm Circuits
  32
- Paper End Detection Circuit
  33
- Power Supply
  34
- Mechanical Operation - Printhead Mechanism
  35
- Spacing
  38
- Ribbon Drive
  40
- Paper Feed
  41
- Paper-End Detection
  43
- Semi-Automatic Sheet Feeder (SASF)
  45
- Paper Park
  46
3 Maintenance & Disassembly

47
- Maintenance Tools
  48
- Maintenance Precautions
  49
- Disassembly/Assembly Procedures - General Information
  50
- Paper Separator
  51
- Printhead
  53
- Upper Cover Assembly
  55
- Space Rack
  58
- Ribbon Feed Gear Assembly
  60
- Mini-Pitch (Space) Belt
  62
- Head Connector Assembly
  64
- Main Control Board (UMMB)
  66
- Operation Panel
  68
- Line Feed Motor
  69
- Photosensor Assembly (Paper End)
  70
- Bail Arms
  71
- Carriage Frame
  73
- Platen Assembly
  75
- Pressure Roller Assembly
  77
- Paper Pressure Guide
  79
- Tractor Assembly
  81
- Microswitch Assembly (SASF)
  83
- Microswitch Assembly (Home Position Switch)
  85
- Printer Mechanism
  86
- Power Supply Unit
  88
- Space Motor Assembly
  90
- Bottom Paper Guide Lever
  92
- Printer Adjustments
  94
- Gap between Platen and Printhead
  95
- Space Belt Tension
  97
- Key Combinations
  98
- From Print Mode
  100
- From Power-OFF
  101
- Printing the Menu
  102
- Sample Menu
  104
- Reset Menu to Factory Defaults
  105
- Limited Operation
  106
- Menu Settings
  108
- Top of Form
  110
- Paper Park
  112
- Paper Tear off
  113
- Resets
  114
- Cleaning
  115
- Lubrication
  116
- Shipping Instructions
  118
4 Failure & Repair Analysis

119
- Printer Serial Number Identification
  120
- Firmware Revision Identification
  121
- Reporting Problems - General Information
  122
- Problem Lists
  123
- Reporting Methods
  124
- Troubleshooting Updates General Information
  125
- Troubleshooting Tips
  126
- Problem Categories
  127
- START here Flowchart
  128
- Tips for Preventing Image Problems
  129
- Common Problems
  130
- Abnormal Output
  132
- Fault Alarms Lamp Display
  135
- RAP Index
  138
- RAP 01: no Power
  139
- RAP 02: Space Operation Does Not Operate Normally
  140
- RAP 03: Wrong Character or Missing Dots
  141
- RAP 04: Line Feed Trouble
  142
- RAP 05: Data Receiving Failure
  143
- Rolling ASCII Test
  144
- Font Test
  144
- Loopback Connector Configuration Diagram
  150
- Procedure
  151
- Serial Cable Information
  153
- Serial Interface Signal Requirements
  154
- Commonly Used Serial Cable Configurations
  155
- Hexadecimal Dump Mode
  157
- Main Control Board (UMMB) Voltage Check Points
  159
- Connectors Block Diagram
  160
- Connector Location
  161
- Resistance Diagrams - Printhead
  162
- Space and Line Feed Motors
  163
- Head Cable Connection
  164
- Index to Charts
  166
- A.2.01 Main Control Board (UMMB) Original
  167
- A.2.02 Main Control Board (UMMB) Current
  170
- RS232-C Serial Module (UMRS)
  173
B Illustrated Parts Listing

175
- Definition of Terms
  177
- Parts Ordering Information
  179
- Charts
  181
- Printer Mechanism (1 of 3)
  181
- Printer Mechanism (2 of 3)
  181
- Printer Mechanism (3 of 3)
  181
- B.2.01 Printer
  183
- B.2.02 Covers
  184
- B.2.03 Printer Unit
  186
- B.2.07 Option Parts
  195
- Consumables
  198
- Packaging
  199
- Service Training Kit Revision List
  204

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