Lexmark MS821

Main motor drive removal ........................................................................................................................................410
Fuser drive gears removal .......................................................................................................................................412
Main fan removal ........................................................................................................................................................412
Motor (MPF) removal .................................................................................................................................................413
LVPS removal...............................................................................................................................................................414
Paper feeder removal................................................................................................................................................417
Motor (redrive) removal ............................................................................................................................................417
Sensor (toner smart chip) removal.........................................................................................................................418
Right side removals........................................................................................................................................420
Right cover removal..................................................................................................................................................420
HVPS removal .............................................................................................................................................................421
Cartridge fan removal ..............................................................................................................................................423
Controller board access door removal................................................................................................................423
Controller board removal........................................................................................................................................424
Speaker removal .......................................................................................................................................................427
High voltage contacts guide removal..................................................................................................................427
Toner cartridge shutter actuator removal ...........................................................................................................430
Sensor (toner cartridge shutter) removal ............................................................................................................430
Front side removals.........................................................................................................................................431
Front door bracket removal.....................................................................................................................................431
Front door removal ...................................................................................................................................................434
Duplex/MPF tray removal........................................................................................................................................434
Inner left cover removal...........................................................................................................................................435
Inner right cover removal ........................................................................................................................................436
Inner guide deflector removal................................................................................................................................438
Sensor (duplex interlock) removal ........................................................................................................................438
Aligner removal..........................................................................................................................................................439
Sensor (input) removal .............................................................................................................................................440
MPF pick roller removal...........................................................................................................................................442
Control panel (4.3-inch display) removal.............................................................................................................442
Control panel (2.4‑inch) cover removal ...............................................................................................................444
Control panel (2.4-inch) board and display removal........................................................................................444
Sensor (toner low) removal.....................................................................................................................................446
Transfer roller removal ............................................................................................................................................. 447
Sensor (toner density) removal..............................................................................................................................448
Rear side removals.........................................................................................................................................449
Rear door removal.....................................................................................................................................................449
Rear cover removal...................................................................................................................................................450
Motor (duplex) removal............................................................................................................................................450
Fuser removal.............................................................................................................................................................452
Sensor (rear door interlock) removal....................................................................................................................452
Upper redrive removal.............................................................................................................................................453
Transfer roller contact removal..............................................................................................................................453
Top side removals...........................................................................................................................................455
4064
Table of contents
11