Narrow vertical line check ................................................................................................................................42
Random marks check........................................................................................................................................42
Residual image check........................................................................................................................................43
Solid color pages check.....................................................................................................................................43
Vertical banding check......................................................................................................................................44
Light print on solids check ................................................................................................................................44
Color problems check .......................................................................................................................................44
Paper jams...............................................................................................................................................45
Avoiding jams....................................................................................................................................................45
Understanding jam messages and locations.....................................................................................................47
200 paper jams ................................................................................................................................................. 48
202 paper jams ................................................................................................................................................. 52
23y paper jams .................................................................................................................................................57
24y paper jams .................................................................................................................................................64
25y paper jams .................................................................................................................................................68
Understanding printer messages............................................................................................................71
Understanding the printer messages ...............................................................................................................72
Printer hardware errors..........................................................................................................................80
110 errors .........................................................................................................................................................82
121 errors .........................................................................................................................................................84
126 errors .........................................................................................................................................................90
133 errors .........................................................................................................................................................90
141 errors .........................................................................................................................................................93
147 errors .........................................................................................................................................................95
171 errors .........................................................................................................................................................97
Steps before starting the 9yy service checks ....................................................................................................98
900 errors .......................................................................................................................................................100
91y errors........................................................................................................................................................106
938 errors .......................................................................................................................................................106
95y errors........................................................................................................................................................107
96y errors........................................................................................................................................................110
97y errors........................................................................................................................................................111
982 errors .......................................................................................................................................................112
990 errors .......................................................................................................................................................112
Base printer symptoms...................................................................................................................................114
Bin‑full/narrow media sensor service check...................................................................................................115
Toner meter cycle (TMC) card service check ..................................................................................................117
Dead printer service check .............................................................................................................................117
Front door sensor or switches service check ..................................................................................................119
Operator panel (display is dim and unchanging) service check......................................................................123
Operator panel (displays all diamonds, no beeps, or five beeps) service check .............................................127
Operator panel (display blank) service check .................................................................................................131
Operator panel (one or more operator panel buttons fail) service check......................................................135
Operator panel USB cable service check ........................................................................................................136
5027
Table of contents
4