Oki OKIPAGE 12i Series User manual

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OKIPAGE12i
LED Page Printer
Maintenance Manual
Rev.6 2000-03-27
ODA / OEL / INT

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CONTENTS
1. CONFIGURATION.................................................................................................. 5
1.1 System Configuration ..................................................................................... 5
1.2 Printer Configuration....................................................................................... 7
1.3 Optional Configuration.................................................................................... 8
1.4 Specification ................................................................................................... 11
1.5 Safety Standards ............................................................................................ 13
1.5.1 Certification Label................................................................................................... 13
1.5.2 Warning Label ........................................................................................................ 13
1.5.3 Warning/Caution Marking....................................................................................... 14
2. OPERATION DESCRIPTION ................................................................................. 15
2.1 Main Control Board......................................................................................... 17
2.2 Power Supply/Sensor Board........................................................................... 18
2.3 Electrophotographic Process.......................................................................... 20
2.3.1 Electrophotographic Process Mechanism .............................................................. 20
2.3.2 Electrophotographic Process ................................................................................. 23
2.3.3 Process Operation Descriptions............................................................................. 26
2.3.4 Revision of LED Head Illumination36
2.4 Paper Jam Detection ...................................................................................... 40
2.5 Cover Open .................................................................................................... 42
2.6 Toner Low Detection....................................................................................... 43
3. PARTS REPLACEMENT........................................................................................ 45
3.1 Precautions for Parts Replacement................................................................ 45
3.2 Parts Layout.................................................................................................... 47
3.3 How to Change Parts...................................................................................... 50
3.3.1 Upper Cover Assy .................................................................................................. 51
3.3.2 LED Head............................................................................................................... 52
3.3.3 Operator Panel Assy .............................................................................................. 53
3.3.4 Lower Base Unit ..................................................................................................... 54
3.3.5 Pulse Motor (Main/Drum) ....................................................................................... 55
3.3.6 Pulse Motor (Registration)...................................................................................... 56
3.3.7 Face Up Stacker Assy............................................................................................ 57
3.3.8 Eject Roller Assy .................................................................................................... 58
3.3.9 Motor Assy ............................................................................................................. 59
3.3.10 Hopping Roller Shaft Assy ..................................................................................... 60
3.3.11 Stacker Cover Assy................................................................................................ 61
3.3.12 Registration Roller.................................................................................................. 62
3.3.13 Roller Transfer Assy............................................................................................... 63
3.3.14 Fusing Unit ............................................................................................................. 64
3.3.15 Back-up Roller........................................................................................................ 65
3.3.16 Sensor Plate (Inlet)................................................................................................. 66
3.3.17 Sensor Plate (Outlet).............................................................................................. 67
3.3.18 Manual Feed Guide Assy ....................................................................................... 68
3.3.19 Sensor Plate (Paper Supply).................................................................................. 69
3.3.20 M5E-PCB ............................................................................................................... 70
3.3.21 Transformer............................................................................................................ 71
3.3.22 Power Supply/Sensor Board and Contact Assy ..................................................... 72
3.3.23 Cassette Guide L Assy........................................................................................... 73
3.3.24 Cassette Guide R Assy .......................................................................................... 74
3.3.25 Spacer Bearing (L/R).............................................................................................. 75

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4. ADJUSTMENT........................................................................................................ 76
4.1 Maintenance Modes and Functions................................................................ 76
4.1.1 User Maintenance Mode ........................................................................................ 76
4.1.2 System Maintenance Mode.................................................................................... 76
4.1.3 Engine Maintenance Mode..................................................................................... 77
4.1.4 EEPROM initialization ............................................................................................ 78
4.2 Adjustment When Replacing a Part................................................................ 79
4.2.1 Setting of LED Head Drive Time ............................................................................ 79
4.2.2 Uploading/Downloading EEPROM data................................................................. 82
5. PERIODICAL MAINTENANCE .............................................................................. 83
5.1 Periodical Replacement Parts ........................................................................ 83
5.2 Cleaning.......................................................................................................... 83
5.2.1 Cleaning of LED Lens Array................................................................................... 83
5.2.2 Cleaning Page Function ......................................................................................... 85
6. TROUBLESHOOTING PROCEDURES ................................................................. 86
6.1 Troubleshooting Tips ...................................................................................... 86
6.2 Points to Check before Correcting Image Problems....................................... 86
6.3 Tips for Correcting Image Problems............................................................... 86
6.4 Preparation for Troubleshooting ..................................................................... 87
6.5 Troubleshooting Flow ..................................................................................... 88
6.5.1 LCD Status Message/Problem List ........................................................................ 88
6.5.2 LCD Message Troubleshooting.............................................................................. 99
6.5.3 Image Troubleshooting........................................................................................... 108
7. WIRING DIAGRAM................................................................................................ 119
7.1 Interconnect Signal Diagram .......................................................................... 119
7.2 PCB Layout and Connector Signal List .......................................................... 120
7.3 Resistance Check........................................................................................... 129
7.4 Short Plug Setting........................................................................................... 131
8. PARTS LIST ........................................................................................................... 132
APPENDIX A RS-232C SERIAL INTERFACE (OPTION) ......................................... 139
APPENDIX B CENTRONICS PARALLEL INTERFACE............................................ 144
APPENDIX C LOOP TEST (RS-232C INTERFACE) ................................................. 150
APPENDIX D DIAGNOSTICS TEST .......................................................................... 151
APPENDIX E MULTI PURPOSE FEEDER MAINTENANCE..................................... 159
1. OUTLINE ........................................................................................................ 159
1.1 Functions................................................................................................................ 159
1.2 External View and Component Names .................................................................. 159
2. MECHANISM DESCRIPTION ........................................................................ 160
2.1 General Mechanism ............................................................................................... 160
2.2 Hopper Mechanism ................................................................................................ 160
3. PARTS REPLACEMENT................................................................................ 161
3.1 Precautions Concerning Parts Replacement ......................................................... 161
3.2 Parts Layout ........................................................................................................... 163

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3.3 Parts Replacement Method164
3.3.1 Link ......................................................................................................... 165
3.3.2 Separator................................................................................................ 166
3.3.3 OLEV-11-PCB ........................................................................................ 167
3.3.4 Pulse Motor ............................................................................................ 168
3.3.5 Planet Gear ............................................................................................ 169
3.3.6 Roller-A and B ........................................................................................ 170
4. TROUBLESHOOTING.................................................................................... 171
4.1 Precautions Prior to the Troubleshooting ............................................................... 171
4.2 Preparations for the Troubleshooting ..................................................................... 171
4.3 Troubleshooting Method......................................................................................... 172
4.3.1 LCD Status Message List ....................................................................... 172
5. CONNECTION DIAGRAM.............................................................................. 174
5.1 Interconnection Diagram ........................................................................................ 174
5.2 PCB Layout ............................................................................................................ 175
6. PARTS LIST ................................................................................................... 176
APPENDIX F HIGH CAPACITY SECOND PAPER FEEDER.................................... 178
1. OUTLINE ........................................................................................................ 178
1.1 Functions................................................................................................................ 178
1.2 External View and Component Names .................................................................. 178
2. MECHANISM DESCRIPTION ........................................................................ 179
2.1 General Mechanism ............................................................................................... 179
2.2 Hopper Mechanism ................................................................................................ 179
3. PARTS REPLACEMENT................................................................................ 180
3.1 Precautions Concerning Parts Replacement ......................................................... 180
3.2 Parts Layout ........................................................................................................... 182
3.3 Parts Replacement Methods .................................................................................. 183
3.3.1 Stepping Motor (Hopping) ...................................................................... 184
3.3.2 TQSB-2 PCB .......................................................................................... 186
3.3.3 Hopping Roller Shaft Assy and One-way Clutch Gear ........................... 186
4. TROUBLESHOOTING.................................................................................... 187
4.1 Precautions Prior to the Troubleshooting ............................................................... 187
4.2 Preparations for the Troubleshooting ..................................................................... 187
4.3 Troubleshooting Method......................................................................................... 188
4.3.1 LCD Status Message List ....................................................................... 188
5. CONNECTION DIAGRAM.............................................................................. 190
5.1 Interconnection Diagram ........................................................................................ 190
5.2 PCB Layout ............................................................................................................ 191
6. PARTS LIST ................................................................................................... 192
APPENDIX G NETWORK INTERFACE (OPTION).................................................... 199

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1. CONFIGURATION
1.1 System Configuration
OKIPAGE 12i 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.

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Figure 1-1
Power Supply
and Sensor Board
Electrophotographic
Processing Unit
Paper Feeding Mechanism
(First Tray Unit)
RS-232C Serial*
Interface Board
1 DRAM SIMM Socket
1 Flash SIMM Socket
Main Control Board
Operator Panel
Paper
Cassette
Face
Down
Stacker
Engine Unit
* : Optional
** : Optional (ODA/INT)
*High Capacity
Second Paper
Feeder
*Multi Purpose
Feeder
Centronics
Face Up
Stacker
or
Network**
Interface Board
1 DRAM SIMM Socket
1 Flash SIMM Socket
or Flash SIMM*
(Flash memory)
DRAM SIMM*
RS-232C
LAN
(10 BASE-T)
Memory*
Expansion Board
1 DRAM SIMM Socket
1 Flash SIMM Socket

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1.2 Printer Configuration
The printer unit consists of the following hardware components:
• Electrophotographic Processor
• Paper Feeder
• Controller
• Operator Panel
• Power Supply Unit
The printer unit configuration is shown in Figure 1-2.
Figure 1-2
Upper cover
Operator panel assy
Stacker assy
Optional board
Fusing unit
Power supply/sensor board
Main control board
Legal/universal paper cassette
Image drum unit(Type 5)
(consumable)
Toner-cartridge(Type 5)
(consumable)

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(3) 1MB Memory Expausion Board
1.3 Optional Configuration
Theoptionsshown below areavailableforuse with OKIPAGE12i. Theseareavailable separately from
the printer unit.
(1) High Capacity Second Paper Feeder
(2) Multi Purpose Feeder

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(5) Network Interface Board
(4) RS-232C Serial Interface Board
(6) DRAM SIMM Memory
DRAM SIMM memory is available with memory of 1MB (min.) to 32MB (max.). The access time of
SIMM memories are 60ns, 70ns, 80ns, and 100ns.

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(7) Flash memory SIMM