Lexmark MS823 Service Manual

Table of contents
Product information......................................................................................2
Edition notice.................................................................................................2
Notices, conventions, and safety information.........................................21
Laser notice......................................................................................................................................................... 21
Conventions........................................................................................................................................................22
Safety information............................................................................................................................................. 23
Change history............................................................................................27
Change history...................................................................................................................................................27
General information.................................................................................... 31
Printer model configurations........................................................................................................................... 31
Paper support.....................................................................................................................................................32
Supported paper sizes............................................................................................................................................... 32
Supported paper types.............................................................................................................................................. 35
Supported paper weights ..........................................................................................................................................37
Tools required for service................................................................................................................................39
Diagnostics and troubleshooting..............................................................41
Troubleshooting precautions.......................................................................................................................... 41
Troubleshooting overview...............................................................................................................................43
Performing the initial troubleshooting check....................................................................................................... 43
Using Safe Mode ......................................................................................................................................................... 43
Fixing print quality issues................................................................................................................................ 44
Initial print quality check............................................................................................................................................ 44
Gray background on prints check........................................................................................................................... 45
Printer is printing blank pages check......................................................................................................................47
Print is too dark check................................................................................................................................................50
Print is too light check................................................................................................................................................52
Paper curl check.......................................................................................................................................................... 54
Folded or wrinkled paper check .............................................................................................................................56
Printer is printing solid black pages check........................................................................................................... 57
Repeating defects appear on prints check .......................................................................................................... 59
Skewed print check ....................................................................................................................................................60
Streaked vertical lines appear on prints check ...................................................................................................62
Horizontal light bands check.................................................................................................................................... 64
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Table of contents
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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