155 errors .......................................................................................................................................................102
171 errors .......................................................................................................................................................103
ACM service check ..........................................................................................................................................104
900 errors .......................................................................................................................................................106
912 errors .......................................................................................................................................................111
94y errors........................................................................................................................................................111
950-958 errors ...............................................................................................................................................112
959 errors .......................................................................................................................................................114
96y errors........................................................................................................................................................115
97y errors........................................................................................................................................................116
98y errors........................................................................................................................................................116
99y errors........................................................................................................................................................117
Base printer symptoms...................................................................................................................................117
Dead machine service check...........................................................................................................................117
Controller board service check .......................................................................................................................118
Control panel service check ............................................................................................................................120
Toner starvation service check .......................................................................................................................120
USB print service check...................................................................................................................................121
Network service check....................................................................................................................................122
Input option hardware errors...............................................................................................................125
3yy error messages .........................................................................................................................................125
Service menus..........................................................................................129
Menus list..............................................................................................................................................131
Diagnostics menu..................................................................................................................................132
Entering the Diagnostics menu.......................................................................................................................132
Registration.....................................................................................................................................................132
PRINT TESTS ....................................................................................................................................................133
Print Quality Pages..........................................................................................................................................133
Hardware Tests ...............................................................................................................................................134
Duplex Tests....................................................................................................................................................135
Input tray tests................................................................................................................................................137
Output Bin Tests .............................................................................................................................................138
BASE SENSOR TEST..........................................................................................................................................139
Device Tests ....................................................................................................................................................139
Table of contents
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