Image Formation System................................................................................................................ 252
Removing the Transfer Roller.............................................................................................................256
Removing the Drum Unit....................................................................................................................259
Fixing System..................................................................................................................................261
Pickup/Feed System....................................................................................................................... 277
Removing the Right Cover................................................................................................................. 277
Removing the Main Drive Unit............................................................................................................ 286
Removing the HVT PCB.................................................................................................................... 293
Removing the Air Filter...................................................................................................................... 294
5. Adjustment................................................................................................... 296
Pickup Feed System....................................................................................................................... 297
Image Position Adjustment.................................................................................................................297
Original Exposure System...............................................................................................................298
Service Mode Backup........................................................................................................................298
Document Feeder System...............................................................................................................300
Single Pass ADF............................................................................................................................... 300
Reversal ADF................................................................................................................................... 310
MP Pickup Tray Unit..........................................................................................................................325
DC Controller PCB............................................................................................................................ 325
Hard Disk..........................................................................................................................................325
Laser Scanner Unit............................................................................................................................328
Drum Unit......................................................................................................................................... 328
Developing Unit.................................................................................................................................328
Reader Controller PCB...................................................................................................................... 328
iv
Contents