Table Of Contents - Oki OKIPAGE 8c Plus Maintenance Manual

1. SPECIFICATIONS ............................................................................................ 7
1.1 Basic System Configuration ............................................................................................. 7
1.2 Printer Specifications ....................................................................................................... 8
1.3 Option Specifications ....................................................................................................... 9
1.4 Basic Specifications ....................................................................................................... 10
2. OPERATION ................................................................................................... 12
2.1 Main Control Board (PCE PCB) ..................................................................................... 13
2.2 Engine Control Board (PX4 PCB) .................................................................................. 16
2.3 Power/Units .................................................................................................................... 17
2.4 Mechanical Processes ................................................................................................... 18
2.4.1 Electrophotographic processing mechanism .................................................... 19
2.4.2 Paper running process ..................................................................................... 25
2.5 Sensors .......................................................................................................................... 34
2.5.1 Paper related sensors ...................................................................................... 34
2.5.2 Other sensors ................................................................................................... 35
2.6 Correction of Color Deviation ......................................................................................... 36
2.7 Transfer Control according to Environmental Changes
(Room Temperatures and Relative Humidities) ............................................................. 36
2.8 Form Jam Detection....................................................................................................... 37
2.9 Cover Opening ............................................................................................................... 37
2.10 Toner Low Detection ...................................................................................................... 38
2.11 Page Size Detection ...................................................................................................... 39
2.12 Power-on Processing ..................................................................................................... 40
2.12.1 Self-diagnostic test ........................................................................................... 40
3. PARTS REPLACEMENT ................................................................................ 41
3.1 Precautions for Parts Replacement ............................................................................... 41
3.2 Parts Layout ................................................................................................................... 43
3.3 How to Change Parts ..................................................................................................... 47
3.3.1 Cover Assy Rear .............................................................................................. 48
3.3.2 Motor-Fan (80-25) ............................................................................................ 49
3.3.3 Paper Eject Assy .............................................................................................. 50
3.3.4 Cover Assy Stacker, Guide Eject FD Assy ....................................................... 51
3.3.5 Frame Assy Upper ............................................................................................ 52
3.3.6 Plate Support Assy ........................................................................................... 53
3.3.7 Limiter 2way (L), (R) / Plate Guide (L) , (R) ...................................................... 54
3.3.8 Cover ............................................................................................................... 55
3.3.9 PCB Assy : PCE ............................................................................................... 56
3.3.10 Motor Fan (CU) ................................................................................................. 57
3.3.11 PXF PCB/PX4 PCB .......................................................................................... 58
3.3.12 Gear Heat Assy ................................................................................................ 59
3.3.13 Main Motor (A), (B) Assy .................................................................................. 60
3.3.14 Gear One-way (Z30) ......................................................................................... 61
3.3.15 Motor Assy BT .................................................................................................. 62
3.3.16 Power Supply Unit, Holder Inlet, Sheet Insulation ............................................ 63
3.3.17 Sensor Assy Box Toner .................................................................................... 64
3.3.18 Square-shaped Connector ............................................................................... 65
41057601TH Rev.1
CONTENTS
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