MINOLTA-QMS PagePro 4100 Series Service Manual page 14

3-2-1. Multi-purpose Tray ................................................................................37
3-2-2. Second and Third Paper Cassette Unit ..................................................39
3-3. Imaging Cartridge..............................................................................................41
3-3-1. Overview ...............................................................................................41
3-3-2. Toner Empty Detection .........................................................................42
3-4. Drum Charge .....................................................................................................43
3-5. Laser Exposure ..................................................................................................44
3-6. Development......................................................................................................46
3-7. Image Transfer...................................................................................................47
3-8. Fusing ................................................................................................................48
3-8-1. An Overview ..........................................................................................48
3-8-2. Fusing Temperature Control Circuit ......................................................49
3-9. Paper Exit ..........................................................................................................51
3-9-1. Overview ...............................................................................................51
3-9-2. Jog Tray Function (4100GN only) ........................................................51
3-10. Duplex Unit (Option) ......................................................................................53
4. MAINTENANCE/DISASSEMBLY....................................................... 54
4-1. Precautions for Maintenance/Disassembly........................................................54
4-1-1. Precautions for Disassembly .................................................................54
4-1-2. Precautions for Handling the Laser Equipment .....................................54
4-1-3. Parts not to be touched ...........................................................................55
4-1-4. Instructions for Handling the PWBs with MOS ICs .............................55
4-1-5. Precautions for Handling the Imaging Cartridge ...................................55
4-2. Maintenance Schedule List................................................................................56
4-3. Required Service Tools .....................................................................................56
4-4. Screws................................................................................................................57
4-5. Disassembly Procedures....................................................................................58
4-5-1. Disassembly Procedure Chart ................................................................58
4-5-2. Before Disassembly Preparation ...........................................................59
4-5-3. Replacing the Paper Take-up Roller ......................................................60
4-5-4. Replacing the Image Transfer Roller .....................................................61
4-5-5. Removal of the Right Cover, the Left Cover and the Front Cover .......63
4-5-6. Removal of the Control Panel ...............................................................64
4-5-7. Removal of the Controller Board (PWB-C, P) and the Mechanical
Control Board (PWB-A) ........................................................................65
4-5-8. Removal of the Paper Take-up Solenoid (SL1) .....................................67
4-5-9. Replacing the Transfer Roller ................................................................68
4-5-10. Removal of the Top Cover ..................................................................70
4-5-11. Removal of the Rear Cover .................................................................71
4-5-12. Removal of the Fusing Unit Cooling Fan (M3) ..................................71
4-5-13. Removal of the Fusing Unit .................................................................72
4-5-14. Disassembly of the Fusing Unit ...........................................................73
4-5-15. Removal of the Paper Exit Sensor (PS3) .............................................77
4-5-16. Removal of the Print Head Unit (PH) .................................................78
4-5-17. Removal of the Interlock Switch (S2) .................................................79
4-5-18. Removal of the High Voltage Board (HV1) ........................................79
4-5-19. Removal of the Power Unit (PU1) ......................................................80
4-5-20. Removal of the Left Frame ..................................................................80
4-5-21. Removal of the Main Motor (M1), the Print Head Cooling Fan (M5)
and the Power Switch (S1) .....................................................................81
4-5-22. Removal of the Paper Empty Sensor (P_ENP1) and
Toner Empty Sensor (PWB-G) ..............................................................83
4-5-23. Removal of the Paper Take-up Sensor (PS1) ......................................84
4-5-24. Removal of the Jog Motor (M4) and the Jog Position Sensor
(JOG_POS1): 4100GN only ..................................................................85
4-5-25. Replacement of the 2nd and 3rd Paper Take-up Roller .......................86
4-5-26. Removal of the Switchback Motor (M41), the Transfer Motor
(M42), the Skew Correction Solenoid (SL41) and the Duplex