HP CLJ M375NW PRO 300 CE903A#BGJ, M475 CE863A 9

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

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