Face-down cover ............................................................................................................... 95 Tray 2 ................................................................................................................................. 96 Right front cover ................................................................................................................ 96 Right lower cover ............................................................................................................... 97 DC controller cover ..........................................................................................................
100 Cartridge door unit ........................................................................................................... 100 Control panel ................................................................................................................... 108 Internal assemblies .......................................................................................................................... 110 Laser/scanner .................................................................................................................. 110 Formatter .........................................................................................................................
111 Fuser ................................................................................................................................ 112 Cassette-paper pickup unit .............................................................................................. 113 Face-down delivery unit ................................................................................................... 118 Main motor ....................................................................................................................... 120 Fuser motor .....................................................................................................................
125 Main fan ........................................................................................................................... 126 Sub fan ............................................................................................................................ 129 Registration unit ............................................................................................................... 134 Transfer roller .................................................................................................................. 135 Paper-feed unit ................................................................................................................
136 Printed circuit assemblies (PCAs) .................................................................................................... 139 DC controller .................................................................................................................... 139 High-voltage power supply .............................................................................................. 142 Low-voltage power supply PCA ....................................................................................... 151 Duplexer ...........................................................................................................................................
155 Duplexer .......................................................................................................................... 155 Duplexer left cover ........................................................................................................... 156 Duplexer right cover ......................................................................................................... 157 Duplexer top cover ........................................................................................................... 158 Duplexer back cover ........................................................................................................
159 Duplexer feed motor ........................................................................................................ 161 Duplexer fan .................................................................................................................... 164 Duplexer PCA .................................................................................................................. 167 500-sheet feeder .............................................................................................................................. 169 500-sheet feeder front cover ............................................................................................
169 500-sheet feeder left front cover ...................................................................................... 170 500-sheet feeder left cover .............................................................................................. 170 500-sheet feeder right front cover .................................................................................... 172 500-sheet feeder right cover ............................................................................................ 173 500-sheet feeder rear dust cover .....................................................................................
175 500-sheet feeder paper-pickup unit ................................................................................. 176 500-sheet feeder lifter drive unit ...................................................................................... 180 500-sheet feeder drive unit .............................................................................................. 182 500-sheet feeder drive PCA ............................................................................................ 186 500-sheet feeder pickup motor ........................................................................................
186 6 Troubleshooting Introduction ....................................................................................................................................... 191 Basic troubleshooting checklist ........................................................................................................ 192 Factors that affect printer performance ............................................................................ 192 vi ENWW