Oki 4M User Manual
Page 4
CONTENTS
1. CONFIGURATION ..................................................................................... 1 - 1
1.1
System Configuration ........................................................................ 1 - 1
1.2. Printer Configuration .......................................................................... 1 - 2
1.3 Option ................................................................................................. 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 - 4
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
3. PARTS REPLACEMENT ........................................................................... 3 - 1
3.1
Precautions for Parts Replacement ................................................... 3 - 1
3.2
Parts Layout ....................................................................................... 3 - 3
3.3
Replacing Parts ................................................................................. 3 - 6
3.3.1
Hopper Plate ........................................................................................... 3 - 6
3.3.2
LED Head and Head Spring .................................................................... 3 - 7
3.3.3
Transfer Roller ......................................................................................... 3 - 8
3.3.4
Upper Cover Assy ................................................................................... 3 - 9
3.3.5
High-Voltage Power Supply Board .......................................................... 3 - 10
3.3.6
Top Cover Assy and Flat Cable Assy ...................................................... 3 - 11
3.3.7
Paper Holder ........................................................................................... 3 - 12
3.3.8
Side Plate M and Idle Gear ..................................................................... 3 - 13
3.3.9
Heat Assy ................................................................................................ 3 - 14
3.3.10
Drive Shaft E (Eject) and Eject Roller ..................................................... 3 - 17
3.3.11
Pressure Roller B (Back Up Roller) ......................................................... 3 - 18
3.3.12
Separator Guide ...................................................................................... 3 - 19
3.3.13
Pulse Motor (Main) .................................................................................. 3 - 21
3.3.14
Hopping Shaft Assy ................................................................................. 3 - 22
3.3.15
Resist Roller ............................................................................................ 3 - 23
3.3.16
Paper Sensor E, Paper Sensor Exit and Toner Sensor Assy ................. 3 - 24
3.3.17
Base Plate ............................................................................................... 3 - 25