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
Change history.........................................................................................................................................19
General information...................................................................................23
Media guidelines.....................................................................................................................................23
Paper guidelines ...............................................................................................................................................23
Using recycled paper and other office papers ..................................................................................................26
Using specialty media .......................................................................................................................................26
Supported paper sizes, types, and weights ......................................................................................................29
Data security notice.................................................................................................................................32
Tools required for service........................................................................................................................33
Diagnostic information...............................................................................35
Troubleshooting overview.......................................................................................................................35
Performing the initial troubleshooting check ...................................................................................................35
Power‑on Reset (POR) sequence ......................................................................................................................36
Using Safe Mode...............................................................................................................................................36
Fixing print quality issues........................................................................................................................37
Initial print quality check ..................................................................................................................................38
Toner smear check............................................................................................................................................38
Background or toner fog check.........................................................................................................................39
Blank pages check.............................................................................................................................................41
Blurred or fuzzy print check..............................................................................................................................42
Half‑color page check .......................................................................................................................................42
Horizontal banding check .................................................................................................................................43
Horizontal line check ........................................................................................................................................43
Missing image at edge check ............................................................................................................................ 43
Toner specks check ...........................................................................................................................................44
Narrow vertical line check ................................................................................................................................44
Random marks check........................................................................................................................................44
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