Service Manuals, User Guides, Schematic Diagrams or docs for : oki Printers LED 8p_8w 8p_8w_mm
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OKIPAGE 8p /8
LED Page Printer
Maintenance Manual
ODA/OEL/INT
Rev. 2 1997,11,12
All specifications are subject to change without notice.
XXXXXXXXTH
PREFACE
This Maintenance Manual describes the field maintenance methods for LED Page Printers.
This manual is written for use by service persons. Please note that you should refer to the Printer
Handbook for the handling and operating methods of the equipment.
CONTENTS
1. CONFIGURATION ..................................................................................... 1-1
1.1 System Configuration ........................................................................ 1-1
1.2 Printer Configuration .......................................................................... 1-2
1.3 Option(OKIPAGE 8p Only) ................................................................ 1-3
1.4 Specification ...................................................................................... 1-4
1.5 Safety Standards ............................................................................... 1-6
1.5.1 Certification Label .................................................................................... 1 - 6
1.5.2 Warning Label ......................................................................................... 1 - 6
2. OPERATION DESCRIPTION .................................................................... 2-1
2.1 Main Control Board ............................................................................ 2-3
2.2 Power Supply Unit ............................................................................. 2-5
2.3 High-Voltage Power Supply Board .................................................... 2-5
2.4 Electro-Photographic Processor ........................................................ 2-7
2.5 Electro-Photographic Process ........................................................... 2 - 11
2.5.1 Explanation of Each Process Operation .................................................. 2 - 13
2.6 Paper Jam Detection ......................................................................... 2 - 19
2.7 Toner Low Detection.......................................................................... 2 - 21
2.8 Cover Open ....................................................................................... 2 - 22
2.9 Detecting ID existence ....................................................................... 2 - 23
3. PARTS REPLACEMENT ........................................................................... 3-1
3.1 Precautions for Parts Replacement ................................................... 3-1
3.2 Parts Layout....................................................................................... 3-3
3.3 Replacing Parts ................................................................................. 3-7
3.3.1 Hopper Plate ........................................................................................... 3 - 7
3.3.2 LED Head and Head Spring .................................................................... 3 - 8
3.3.3 Transfer Roller ......................................................................................... 3 - 9
3.3.4 Upper Cover Assy ................................................................................... 3 - 10
3.3.5 High-Voltage Power Supply Board (P2H/ P6L) ....................................... 3 - 11
3.3.6 Top Cover Assy and Flat Cable Assy ...................................................... 3 - 12
3.3.7 Paper Holder ........................................................................................... 3 - 13
3.3.8 Side Plate M and Idle Gear ..................................................................... 3 - 14
3.3.9 Heat Assy ................................................................................................ 3 - 15
3.3.10 Drive Shaft E (Eject) and Eject Roller ..................................................... 3 - 18
3.3.11 Pressure Roller B (Back Up Roller) ......................................................... 3 - 19
3.3.12 Separator Guide ...................................................................................... 3 - 20
3.3.13 Pulse Motor (Main) .................................................................................. 3 - 23
3.3.14 Hopping Shaft Assy ................................................................................. 3 - 24
3.3.15 Resist Roller ............................................................................................ 3 - 25
3.3.16 Paper Sensor E, Paper Sensor Exit and Toner Sensor Assy ................. 3 - 26
3.3.17 Base Plate ............................................................................................... 3 - 27
4. ADJUSTMENT ........................................................................................... 4 - 1
4.1 Adjustment Types and Functions ...................................................... 4 - 1
4.1.1 Printer Driver ........................................................................................... 4 - 1
4.1.2 Engine Maintenance Utility ...................................................................... 4 - 2
4.2 Adjustment When Replacing a Part ................................................... 4 - 2
4.2.1 Setting LED Head Drive Time ................................................................. 4 - 2
4.2.2 Uploading and Downloading EEPROM Data .......................................... 4 - 3
5. PERIODICAL MAINTENANCE ................................................................. 5 - 1
5.1 Periodical Replacement Parts ........................................................... 5 - 1
5.2 Cleaning............................................................................................. 5 - 1
5.2.1 Cleaning the LED Lens Array .................................................................. 5 - 1
6. TROUBLESHOOTING PROCEDURES .................................................... 6-1
6.1 Troubleshooting Tips ......................................................................... 6-1
6.2 Check Points Before Correcting Image Problems ............................. 6-1
6.3 Notes When Correcting Image Problems .......................................... 6-1
6.4 Preparation Before Troubleshooting .................................................. 6-1
6.5 Troubleshooting ................................................................................. 6-3
6.5.1 Status Monitor Message List ................................................................... 6 - 3
6.5.2 Status Message Troubleshooting ............................................................ 6 - 7
6.5.3 Image Troubleshooting ............................................................................ 6 - 13
7. WIRING DIAGRAM ................................................................................... 7 - 1
7.1 (a)Interconnect Signal Diagram (OKIPAGE 8p) ................................ 7 - 1
7.1 (b)Interconnect Signal Diagram (OKIPAGE 8w) ................................ 7 - 2
7.2.1 Main Control board (NMA PCB)(OKIPAGE 8p) ...................................... 7 - 3
7.2.2 Main Control board (NMA PCB)(OKIPAGE 8w) ...................................... 7 - 4
7.2.3 High-Voltage Power Sapply Board .......................................................... 7 - 5
8. PARTS LIST .............................................................................................. 8 - 1
APPENDIX A LOCAL PRINTING .............................................................. A-1
APPENDIX B PARALLEL INTERFACE ................................................... B-1
APPENDIX C MACINTOSH INTERFACE ................................................. C-1
APPENDIX D DETAIL OF EACH FUNCTION .......................................... D-1
1. CONFIGURATION
1. CONFIGURATION
1.1 System Configuration
The OKIPAGE 8p/8w consists of a control block, a power supply unit, and an engine block. (See
Figure 1-1.)
ENGINE UNIT
Paper Feed Mechanism
Hopper
Plate
Electro-photographic
Processor
Main High-Voltage
Power Supply Board
Sub High-Voltage
PowerSupply Board
Power Supply Unit
Figure 1-1
,
Main Control Board
4MB Memory
Expansion Board
(OKIPAGE 8p Only)
1-1
1.2 Printer Configuration
The printer unit consists of the following five hardware components:
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