OKIDATA OL820 Manuals

Manuals and User Guides for OKIDATA OL820. We have 1 OKIDATA OL820 manual available for free PDF download: Service Manual

OKIDATA OL820 Service Manual

OKIDATA OL820 Service Manual (150 pages)

LED Page Printers

Brand: OKIDATA | Category: Printer | Size: 0.86 MB

Table of Contents

Table of Contents
2
About this Manual

6
1 Product Specifications

7
- Overview
  7
- Physical Specifications
  8
- Print Specifications
  9
- Paper Specifications
  10
- Power Requirements
  11
- Options
  12
- Consumables
  14
- Reliability Data
  15
2 Principles of Operation

16
- Printer Overview
  16
- Main Control Function
  17
- Centronics Parallel Interface
  18
- RS-232C Serial Interface
  19
- Optional Font Card
  20
- Optional RAM Board / IC Set
  21
- Printer Control Function
  22
- Operation Panel
  22
- Engine Board
  22
- Power Supply Unit
  22
- Fuser Unit
  22
- Main Motor (Drum Motor)
  27
- LED Head
  28
- Resist Motor
  29
- DC Fan
  30
- Mechanical Operation Description
  31
- OL400 Printing Process
  32
- Process Descriptions
  33
- Sensors and Switches
  36
- Sensor Functions
  36
- Sensors and Switches
  37
3 Maintenance & Disassembly

40
- Maintenance
  40
- Maintenance Tools
  41
- Maintenance Precautions
  42
- Disassembly/Assembly Procedures
  43
- Upper Cover
  44
- LED Head
  46
- Interface Board
  48
- RAM Board (Option)
  49
- Main Controller Board
  50
- Engine Controller Circuit Board (LLAB)
  51
- Main Motor
  53
- DC Fan Assembly
  55
- Idle Gears "A" and "B", and the Reduction Gear
  56
- Power Supply Unit
  57
- Upper Unit
  59
- Fusing Unit
  61
- Backup Roller
  63
- Transfer Charger Assembly
  64
- Resist Roller Assembly
  65
- Idle Gear C
  66
- Paper Supply Unit
  67
- Resist Motor
  68
- Engine Connection Board
  69
- Hopping Roller
  70
- Separator
  72
- Ozone Filter
  73
- Adjustments and Service Checks
  74
- Actual Page Count
  75
- Modified Page Count
  76
- Vertical Print Start Position Adjustment
  77
- Setting the LED Head Drive Time
  79
- Voltage Adjustment (+5 VDC)
  81
- Darkness Control
  82
- Cleaning
  83
4 Failure & Repair Analysis

85
- Overview
  85
- Troubleshooting Updates
  86
- Reporting Problems
  87
- Troubleshooting Tips
  89
- Fault Alarms
  90
- Error Messages Table
  91
- Repair Analysis Procedures
  96
- RAP Index
  97
- RAP 01Printer Does Not Initialize
  98
- RAP 02:Paper Feed Jam Alarm
  100
- RAP 03:Paper Jam Alarm
  101
- RAP 04:Size Tray Error Alarm
  103
- RAP 05:Engine Error - Fusing Problem Alarm
  104
- RAP 06:Engine Error Alarm
  106
- RAP 07:Light or Blurred Images
  107
- RAP 09:Blank Output
  109
- RAP 10:Vertical Black Stripes
  110
- RAP 11:Repeating Marks
  111
- RAP 12:Blank Spots
  112
- RAP 13:Vertical White Stripes
  113
- RAP 14:Black Page
  114
- RAP 15:Poor Fusing
  115
- Self-Tests
  116
- Overview
  118
- Charts
  119
- Main Controller Board (LBPE / LBPF)
  121
- Engine Controller Board (LLAB)
  123
- Operator Panel PCB (LLDC)
  125
- Engine Connection PCB (LLCC)
  126
- Centronics Parallel Interface PCB (LLCP / LLCQ)
  128
- RS-232C Interface PCB (LLRS)
  130
- Expansion RAM Board (Optional) (RAMK / RAMH)
  132
- Power Interconnect Board (LLIE)
  133
- Power Supply Unit
  134
B Illustrated Parts Listing

136
- Illustrated Parts Listing
  137
- Definitions of Terms
  137
- Parts Ordering Information
  138
- Charts
  140
- Items 17 - 27, and 41
  140
- B.2.01 Items 1 - 7
  141
- Items
  143
- Items
  147

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