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Section III Maintenance
3.1
Precautions for Preventive Maintenance Service ..........................
3-1
3.2
Maintenance Chart ........................................................................
3-3
3.3
Cleaning Method ...........................................................................
3-4
3.4
Disassembly and Re-assembly .....................................................
3-7
1. Sheet Bypass ............................................................................
3-8
2. Developer Unit/Drum unit ........................................................
3-13
3. Fuser Unit ................................................................................
3-18
4. Optics Unit ...............................................................................
3-21
5. Main Body ................................................................................
3-27
3.5
Adjustment ...................................................................................
3-28
1. Exposure Adjustment ..............................................................
3-29
2. Skew/Side position Adjustment (Printer unit) ..........................
3-30
3. Skew/Lead edge position Adjustment (Scanner unit) ..............
3-31
4. Void Registration Adjustment ..................................................
3-31
3.6
Updating the Firmware ................................................................
3-32
Section IV PCB Connector and Signal Information
4.1
Glossary of Electrical Abbreviations ..............................................
4-1
4.2
Main CPU PCB ..............................................................................
4-3
4.3
LVPS PCB ...................................................................................
4-13
Section V Troubleshooting
5.1
Service Mode .................................................................................
5-1
1. Service Mode Functions ............................................................
5-1
2. F4 Mode : Input/Output Check ..................................................
5-3
3. F5 Mode : Copier Function Programming .................................
5-5
4. F6 Mode : Adjustment and Programming ..................................
5-6
5. F7 Mode : Electronic Counter ....................................................
5-8
6. F8 Mode : Copier Operating Adjustment ...................................
5-9
7. F9 Mode : Service Mode .........................................................
5-10
5.2
Self-diagnostics/Machine Malfunctions .......................................
5-11
1. User Error :U code ...................................................................
5-11
2. Paper Jam : J code ..................................................................
5-12
3. Machine Error : E code ............................................................
5-13
Schematic Diagram
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