Remove the fuser ....................................................................... 93
Reinstall the fuser ...................................................................... 98
Paper-delivery assembly ............................................................................ 99
Remove the paper-delivery assembly ............................................ 99
Tray cassettes and optional Tray 3 assembly ............................................................ 102
2 Solve problems ............................................................................................................. 103
Solve problems checklist ....................................................................................................... 104
Menu map .......................................................................................................................... 105
Troubleshooting process ........................................................................................................ 106
Pretroubleshooting checklist .................................................................................... 106
Power-on checks ................................................................................................... 107
Troubleshooting tools ............................................................................................................ 108
Component diagnostics .......................................................................................... 108
LED diagnostics ...................................................................................... 108
Network LEDs (network models only) ......................................... 108
Control panel LEDs .................................................................. 108
Memory card LED (memory-card models only) ............................. 108
Component tests ................................................................................................... 109
Control-panel tests .................................................................................. 109
Diagrams ............................................................................................................. 110
Plug/jack locations ................................................................................. 110
Location of connectors ............................................................................ 111
DC controller PCA ................................................................... 111
Location of major components ................................................................. 113
Major components .................................................................. 113
Motors and fans ...................................................................... 115
Rollers .................................................................................... 116
PCAs ..................................................................................... 117
Optional 250-sheet cassette ..................................................... 118
General timing diagram .......................................................................... 119
General circuit diagram .......................................................................... 120
CPU/ASIC diagrams .............................................................................. 121
HVT/Toner EMP diagram ........................................................................ 123
Driver PCA diagram ............................................................................... 124
Duplexer PCA diagram ........................................................................... 125
FSR diagram .......................................................................................... 126
Internal print quality test pages ............................................................................... 127
Print quality troubleshooting page ............................................................ 127
Print quality assessment page .................................................................. 127
Print the Configuration Page .................................................................... 127
ENWW vii
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