Lexmark MX81x - Notices and Safety Information; Preface; General Information; Diagnostic Information

Table of contents
Product information.....................................................................................2
Edition notice...............................................................................................2
Notices and safety information..................................................................21
Laser notices............................................................................................................................................21
Safety.......................................................................................................................................................24
Preface.......................................................................................................27
Service manual conventions....................................................................................................................27
General information...................................................................................29
Paper guidelines......................................................................................................................................29
Paper characteristics......................................................................................................................................... 29
Selecting paper ................................................................................................................................................. 30
Selecting preprinted forms and letterhead ......................................................................................................31
Using recycled paper and other office papers.................................................................................................. 31
Storing paper .................................................................................................................................................... 32
Data security notice.................................................................................................................................33
Tools required for service........................................................................................................................33
Diagnostic information...............................................................................35
Troubleshooting overview.......................................................................................................................35
Performing the initial troubleshooting check ................................................................................................... 35
Error code number key ..................................................................................................................................... 36
Power‑on Reset (POR) sequence.............................................................................................................36
Using Safe Mode.....................................................................................................................................37
Fixing print quality issues........................................................................................................................37
Initial print quality check .................................................................................................................................. 38
Fixing base printer print quality issues ............................................................................................................. 38
Gray background on prints........................................................................................................................... 38
Horizontal voids appear on prints ................................................................................................................ 39
Print irregularities ........................................................................................................................................ 40
Printer is printing blank pages...................................................................................................................... 41
Printer is printing solid black pages.............................................................................................................. 42
Shadow images appear on prints ................................................................................................................. 43
Skewed print ................................................................................................................................................ 44
Streaked horizontal lines appear on prints .................................................................................................. 45
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Table of contents
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