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OKIPAGE 14ex
LED Page Printer
Maintenance Manual
ODA / OEL / INT
Rev.2 2001-03-19
41356901TH Rev.2 1 / 196
Document Revision History
Corrected items Person in
Rev.No. Date
No. Page Description of change charge
1 2000-09-21 ISSUE EMP Ono
2 2001-03-19 NP39 H Ono
41356901TH Rev.2 2/
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.
41356901TH Rev.2 3/
CONTENTS
1. CONFIGURATION .................................................................................................. 7
1.1 System Configuration ..................................................................................... 7
1.2 Printer Configuration ....................................................................................... 9
1.3 Optional Configuration .................................................................................... 10
1.4 Specification ................................................................................................... 12
1.5 Safety Standards ............................................................................................ 14
1.5.1 Certification Label ................................................................................................... 14
1.5.2 Warning Label ........................................................................................................ 14
1.5.3 Warning/Caution Marking ....................................................................................... 15
2. OPERATION DESCRIPTION ................................................................................. 16
2.1 Main Control Board ......................................................................................... 18
2.2 Power Supply/Sensor Board........................................................................... 19
2.3 Electrophotographic Process .......................................................................... 21
2.3.1 Electrophotographic Process Mechanism .............................................................. 21
2.3.2 Electrophotographic Process ................................................................................. 24
2.3.3 Process Operation Descriptions ............................................................................. 27
2.3.4 Revision of LED Head Illumination ......................................................................... 37
2.4 Paper Jam Detection ...................................................................................... 38
2.5 Cover Open .................................................................................................... 40
2.6 Toner Low Detection....................................................................................... 41
3. PARTS REPLACEMENT ........................................................................................ 43
3.1 Precautions for Parts Replacement ................................................................ 43
3.2 Parts Layout.................................................................................................... 45
3.3 How to Change Parts...................................................................................... 48
3.3.1 Upper Cover Assy .................................................................................................. 49
3.3.2 LED Head ............................................................................................................... 50
3.3.3 Operator Panel Assy .............................................................................................. 51
3.3.4 Lower Base Unit ..................................................................................................... 52
3.3.5 Pulse Motor (Main/Drum) ....................................................................................... 53
3.3.6 Pulse Motor (Registration) ...................................................................................... 54
3.3.7 Face Up Stacker Assy ............................................................................................ 55
3.3.8 Eject Roller Assy .................................................................................................... 56
3.3.9 Motor Assy ............................................................................................................. 57
3.3.10 Hopping Roller Shaft Assy ..................................................................................... 58
3.3.11 Stacker Cover Assy ................................................................................................ 59
3.3.12 Registration Roller .................................................................................................. 60
3.3.13 Roller Transfer Assy ............................................................................................... 61
3.3.14 Fusing Unit ............................................................................................................. 62
3.3.15 Back-up Roller ........................................................................................................ 63
3.3.16 Sensor Plate (Inlet) ................................................................................................. 64
3.3.17 Sensor Plate (Outlet), Sensor Wire Assy ............................................................... 65
3.3.18 Manual Feed Guide Assy ....................................................................................... 66
3.3.19 Sensor Plate (Paper Supply) .................................................................................. 67
3.3.20 M7E-PCB ............................................................................................................... 68
3.3.21 Power Supply/Sensor Board, High Voltage Unit and Contact Assy ....................... 69
3.3.22 Cassette Guide L Assy ........................................................................................... 70
3.3.23 Cassette Guide R Assy .......................................................................................... 71
3.3.24 Spacer Bearing (L/R) .............................................................................................. 72
41356901TH Rev.2 4/
4. ADJUSTMENT ........................................................................................................ 73
4.1 Maintenance Modes and Functions ................................................................ 73
4.1.1 User Maintenance Mode ........................................................................................ 73
4.1.2 System Maintenance Mode .................................................................................... 73
4.1.3 Engine Maintenance Mode ..................................................................................... 74
4.1.4 EEPROM initialization ............................................................................................ 75
4.2 Adjustment When Replacing a Part ................................................................ 76
4.2.1 Uploading/Downloading EEPROM data ................................................................. 76
5. PERIODICAL MAINTENANCE .............................................................................. 77
5.1 Periodical Replacement Parts ........................................................................ 77
5.2 Cleaning.......................................................................................................... 77
5.2.1 Cleaning of LED Lens Array ................................................................................... 77
5.2.2 Cleaning Page Function ......................................................................................... 79
6. TROUBLESHOOTING PROCEDURES ................................................................. 80
6.1 Troubleshooting Tips ...................................................................................... 80
6.2 Points to Check before Correcting Image Problems....................................... 80
6.3 Tips for Correcting Image Problems ............................................................... 80
6.4 Preparation for Troubleshooting ..................................................................... 81
6.5 Troubleshooting Flow ..................................................................................... 82
6.5.1 LCD Status Message/Problem List ........................................................................ 82
6.5.2 LCD Message Troubleshooting .............................................................................. 92
7. WIRING DIAGRAM ................................................................................................ 112
7.1 Interconnect Signal Diagram .......................................................................... 112
7.2 PCB Layout and Connector Signal List .......................................................... 113
7.3 Resistance Check ........................................................................................... 123
8. PARTS LIST ........................................................................................................... 125
APPENDIX A RS-232C SERIAL INTERFACE (OPTION) ........................................... 132
APPENDIX B CENTRONICS PARALLEL INTERFACE .............................................. 137
APPENDIX C UNIVERSAL SERIAL BUS (USB) ......................................................... 143
APPENDIX D LOOP TEST (RS-232C INTERFACE) ................................................... 147
APPENDIX E DIAGNOSTICS TEST ............................................................................ 148
APPENDIX F MULTI PURPOSE FEEDER MAINTENANCE ..................................... 157
1. OUTLINE ........................................................................................................ 157
1.1 Functions ................................................................................................................ 157
1.2 External View and Component Names .................................................................. 157
2. MECHANISM DESCRIPTION ........................................................................ 158
2.1 General Mechanism ............................................................................................... 158
2.2 Hopper Mechanism ................................................................................................ 158
41356901TH Rev.2 5/
3. PARTS REPLACEMENT ................................................................................ 159
3.1 Precautions Concerning Parts Replacement ......................................................... 159
3.2 Parts Layout ........................................................................................................... 161
3.3 Parts Replacement Methods .................................................................................. 162
3.3.1 Link ........................................................................................................... 163
3.3.2 Separator ................................................................................................. 164
3.3.3 OLEV-11-PCB .......................................................................................... 165
3.3.4 Pulse Motor .............................................................................................. 166
3.3.5 Planet Gear .............................................................................................. 167
3.3.6 Roller-A and B .......................................................................................... 168
4. TROUBLESHOOTING.................................................................................... 169
4.1 Precautions Prior to the Troubleshooting ............................................................... 169
4.2 Preparations for the Troubleshooting ..................................................................... 169
4.3 Troubleshooting Method ......................................................................................... 170
4.3.1 LCD Status Message List ......................................................................... 170
5. CONNECTION DIAGRAM .............................................................................. 172
5.1 Interconnection Diagram ........................................................................................ 172
5.2 PCB Layout ............................................................................................................ 173
6. PARTS LIST ................................................................................................... 174
APPENDIX G HIGH CAPACITY SECOND PAPER FEEDER ................................... 176
1. OUTLINE ........................................................................................................ 176
1.1 Functions ................................................................................................................ 176
1.2 External View and Component Names .................................................................. 176
2. MECHANISM DESCRIPTION ........................................................................ 177
2.1 General Mechanism ............................................................................................... 177
2.2 Hopper Mechanism ................................................................................................ 177
3. PARTS REPLACEMENT ................................................................................ 178
3.1 Precautions Concerning Parts Replacement ......................................................... 178
3.2 Parts Layout ........................................................................................................... 180
3.3 Parts Replacement Methods .................................................................................. 181
3.3.1 Stepping Motor (Hopping) ........................................................................ 182
3.3.2 TQSB-2 PCB ............................................................................................ 184
3.3.3 Hopping Roller Shaft Assy and One-way Clutch Gear ............................. 184
4. TROUBLESHOOTING.................................................................................... 185
4.1 Precautions Prior to the Troubleshooting ............................................................... 185
4.2 Preparations for the Troubleshooting ..................................................................... 185
4.3 Troubleshooting Method ......................................................................................... 186
4.3.1 LCD Status Message List ......................................................................... 186
5. CONNECTION DIAGRAM .............................................................................. 188
5.1 Interconnection Diagram ........................................................................................ 188
5.2 PCB Layout ............................................................................................................ 189
6. PARTS LIST ................................................................................................... 190
41356901TH Rev.2 6/
1. CONFIGURATION
1.1 System Configuration
OKIPAGE 14ex consists of control and engine blocks in the standard configuration, as shown in Figure
1-1.
In addition, the options marked with asterisk(*) are available.
41356901TH Rev.2 7/
Operator Panel
Engine Unit
Paper
Cassette Face Up
Stacker
*High Capacity
Second Paper Paper Feeding Mechanism
Feeder (First Tray Unit) Face
*Multi Purpose Down
Feeder
Electrophotographic Stacker
Processing Unit
Fuser Unit
High Voltage Unit
and Sensor Board
Power Supply AC
Centronics
Main Control Board
USB
* : Optional
Expansion Board
1 DRAM SIMM Socket
1 Flash SIMM Socket
DRAM SIMM*
or
RS-232C RS-232C Serial*
Interface Board
1 DRAM SIMM Socket Flash SIMM*
1 Flash SIMM Socket (Flash memory)
Figure 1-1
41356901TH Rev.2 8/
1.2 Printer Configuration
The printer unit consists of the following hardware components:
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