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Remove the USB PCA ................................................................ 96
Duplex-reverse drive assembly ................................................................... 97
Remove the duplex-reverse drive assembly .................................... 97
Fuser .................................................................................................... 100
Remove the fuser ..................................................................... 101
Reinstall the fuser .................................................................... 106
Paper-delivery assembly .......................................................................... 107
Remove the paper-delivery assembly .......................................... 107
Tray cassettes and optional Tray 3 assembly ............................................................ 110
2 Solve problems ............................................................................................................................... 111
Solve problems checklist ....................................................................................................... 112
Menu map .......................................................................................................................... 113
Troubleshooting process ........................................................................................................ 114
Pretroubleshooting checklist .................................................................................... 114
Power-on checks ................................................................................................... 115
Troubleshooting tools ............................................................................................................ 116
Component diagnostics .......................................................................................... 116
LED diagnostics ...................................................................................... 116
Network LEDs (network models only) ......................................... 116
Control panel LEDs .................................................................. 116
Memory card LED (memory-card models only) ............................. 116
Component tests ................................................................................................... 117
Control-panel tests .................................................................................. 117
Diagrams ............................................................................................................. 118
Plug/jack locations ................................................................................. 118
Location of connectors ............................................................................ 119
DC controller PCA ................................................................... 119
Location of major components ................................................................. 121
Major components .................................................................. 121
Motors and fans ...................................................................... 123
Rollers .................................................................................... 124
PCAs ..................................................................................... 125
Optional 250-sheet cassette ..................................................... 126
General timing diagram .......................................................................... 127
General circuit diagram .......................................................................... 128
CPU/ASIC diagrams .............................................................................. 129
HVT/Toner EMP diagram ........................................................................ 131
Driver PCA diagram ............................................................................... 132
Duplexer PCA diagram ........................................................................... 133
FSR diagram .......................................................................................... 134
ENWW vii