Lexmark M1140, Service Manual

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Table of contents
Product information.....................................................................................2
Edition notice...............................................................................................2
Notices and safety information..................................................................11
Laser notices............................................................................................................................................11
Safety information...................................................................................................................................14
Preface.......................................................................................................19
Service manual conventions....................................................................................................................19
General information...................................................................................21
Media guidelines.....................................................................................................................................21
Paper guidelines ...............................................................................................................................................21
Using specialty media .......................................................................................................................................25
Supported paper sizes, types, and weights ......................................................................................................26
Data security notice.................................................................................................................................29
Tools required for service........................................................................................................................29
Diagnostic information...............................................................................31
Troubleshooting overview.......................................................................................................................31
Performing the initial troubleshooting check ...................................................................................................31
Power
‑
on Reset (POR) sequence ......................................................................................................................31
Fixing print quality issues........................................................................................................................32
Initial print quality check ..................................................................................................................................32
Gray background or toner fog check ................................................................................................................32
Blank pages check.............................................................................................................................................33
Solid black pages check.....................................................................................................................................34
Repeating defects check ...................................................................................................................................35
Shadow images check .......................................................................................................................................35
Skewed print check...........................................................................................................................................36
Streaked horizontal or vertical lines appear on prints check............................................................................38
Toner smear check............................................................................................................................................38
Toner specks appear on prints check ...............................................................................................................39
Paper jams...............................................................................................................................................40
Avoiding jams....................................................................................................................................................40
Understanding jam messages and locations.....................................................................................................41
200 paper jams .................................................................................................................................................43
201 paper jams .................................................................................................................................................50
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Table of contents
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