Lexmark MS823 Service Manual

Processor ID...........................................................................................................................................................382
Serial number ........................................................................................................................................................382
Model name ...........................................................................................................................................................382
Engine setting [x] ..................................................................................................................................................382
EP setup..................................................................................................................................................................382
Printer diagnostics and adjustments....................................................................................................................383
Sensor tests ...........................................................................................................................................................383
Motor tests .............................................................................................................................................................383
Registration adjust................................................................................................................................................384
Add-on cards tests...............................................................................................................................................384
Margin Oset.........................................................................................................................................................385
Universal Override ...............................................................................................................................................385
Additional input tray diagnostics...........................................................................................................................385
Sensor tests ...........................................................................................................................................................385
Motor tests .............................................................................................................................................................386
Output device diagnostics......................................................................................................................................386
Sensor tests ...........................................................................................................................................................386
Config Menu.....................................................................................................................................................386
Entering invalid engine mode......................................................................................................................389
Entering recovery mode............................................................................................................................... 389
Accessing the Network SE menu............................................................................................................... 389
Service Engineer menu.................................................................................................................................389
Accessing the service engineer (SE) menu........................................................................................................389
Service engineer (SE) menu ...................................................................................................................................389
Parts removal.............................................................................................391
Removal precautions...................................................................................................................................... 391
Data security notice..................................................................................................................................................392
Handling ESD‑sensitive parts.................................................................................................................................393
Critical information for controller board or control panel replacement ......................................................394
Restoring the printer configuration after replacing the controller board ...................................................395
Restoring solutions, licenses, and configuration settings ..............................................................................397
Updating the printer firmware ...............................................................................................................................398
Backing up eSF solutions and settings .............................................................................................................. 400
Disconnecting ribbon cables................................................................................................................................. 400
Adjustments...................................................................................................................................................... 401
Registration adjustment............................................................................................................................................401
Aligner roller adjustment.........................................................................................................................................403
Polygon printhead mechanical registration adjustment .................................................................................405
Removal procedures......................................................................................................................................408
Left side removals.......................................................................................................................................... 409
Left cover removal ....................................................................................................................................................409
AC power socket removal........................................................................................................................................410
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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