Rear-door rib assembly (duplex product) ........................................................................ 119
Upper-cover assembly ..................................................................................................... 121
Reinstall the upper cover ................................................................................ 123
Control-panel assembly ................................................................................................... 124
Left cover ......................................................................................................................... 126
Reinstall the left cover ..................................................................................... 127
High-voltage power-supply PCA ...................................................................................... 129
Color-misregistration sensor assembly PCA ................................................................... 132
Reinstall the color-misregistration sensor assembly ....................................... 135
Right panel ....................................................................................................................... 136
Motors (M1 and M2) ........................................................................................................ 140
DC controller PCA ........................................................................................................... 142
Special considerations .................................................................................... 142
Remove the DC controller PCA ...................................................................... 142
Formatter PCA ................................................................................................................. 144
Special considerations .................................................................................... 144
Remove the formatter PCA ............................................................................. 144
Fan ................................................................................................................................... 146
Intermediate PCA ............................................................................................................ 147
Right-front cover and power button ................................................................................. 148
Power-supply sub PCA .................................................................................................... 150
Fuser motor assembly ..................................................................................................... 154
Reinstall the fuser motor assembly ................................................................. 158
Duplex reverse-drive assembly ....................................................................................... 159
Fuser ................................................................................................................................ 162
Reinstall the fuser ........................................................................................... 167
Paper-delivery assembly ................................................................................................. 168
Front-door assembly ........................................................................................................ 171
Reinstall the front-door assembly .................................................................... 176
7 Problem solve
Introduction ....................................................................................................................................... 180
Solve problems checklist .................................................................................................................. 181
Menu map ........................................................................................................................................ 181
Troubleshooting process .................................................................................................................. 182
Pretroubleshooting checklist ........................................................................................... 182
Power-on checks ............................................................................................................. 184
Tools for troubleshooting .................................................................................................................. 185
Print-quality troubleshooting tools .................................................................................... 185
Calibrate the product ....................................................................................... 185
Problem-solve diagrams ................................................................................................................... 186
Repetitive image defects ................................................................................................. 186
Interface ports .................................................................................................................. 187
ENWW vii
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