Lexmark MS823 Service Manual

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

Lexmark MS823 Specifications

General

Print Technology	Monochrome Laser
Print Speed	Up to 65 ppm
Print Resolution	1200 x 1200 dpi
Monthly Duty Cycle	Up to 300, 000 pages
Recommended Monthly Page Volume	5, 000 - 75, 000 pages
Processor Speed	1 GHz
Standard Memory	512 MB
Connectivity	USB, Ethernet
Standard Input Capacity	650 pages
Maximum Paper Input	4, 400 sheets
Media Types Supported	Plain paper, Card stock, Envelopes, Labels, Transparencies
Operating System Compatibility	Windows, Linux
Duplex Printing	Automatic