User Guide

Basic operation of the printer..............................................................................................105
Printer operating sequence................................................................................105
Control system overview.....................................................................................................105
Pickup-and-feed system overview......................................................................................106
Laser/scanner system overview.........................................................................................106
Image-formation system overview......................................................................................106
General descriptions ...........................................................................................................................107
Dc controller PCA...............................................................................................................108
Motor and fan control.........................................................................................109
Power supply......................................................................................................................110
Fuser-control circuit............................................................................................110
Fuser over-temperature protection ...................................................................111
Overcurrent/overvoltage protection....................................................................111
Laser/scanner assembly.....................................................................................................112
Paper-pickup-and-feed system...........................................................................................................114
Pickup-and-feed block .......................................................................................................116
Printing from tray 1 .............................................................................................................117
Printing from tray 2 .............................................................................................................119
Tray 2, 500-sheet feeder, and 1,500-sheet feeder media-size detection..........119
Lifter-driver operation.........................................................................................120
Multiple-feed prevention.....................................................................................121
Media-skew prevention.......................................................................................................121
Fuser/delivery block............................................................................................................122
Jam detection......................................................................................................................122
Printer pickup delay jam from tray 1..................................................................123
Printer pickup delay jam from tray 2..................................................................123
Printer pickup stationary jam..............................................................................123
Printer-delivery wrap jam when feeding regular media.....................................123
Printer delivery wrap-jam when feeding irregular media...................................123
Printer delivery-delay jams.................................................................................124
Printer door-open jam .......................................................................................124
Printer residual-media jam.................................................................................124
Printing from the 500-sheet feeder.....................................................................................125
500-sheet feeder pickup and feeding................................................................126
Printing from the 1,500-sheet feeder..................................................................................128
1,500-sheet feeder pickup and feeding.............................................................129
1,500-sheet feeder lifting mechanism................................................................131
Envelope feeder..................................................................................................................132
Envelope-feeder pickup and feeding.................................................................132
Envelope feeder jam detection ..........................................................................................133
Envelope feeder pickup delay jam.....................................................................133
Envelope feeder pickup stationary jam..............................................................133
Duplexer..............................................................................................................................134
Reversing and duplexer pickup..........................................................................135
Duplexer jam detection ......................................................................................................136
Stacker and stapler/stacker ................................................................................................................137
Stacker................................................................................................................................139
Stacker feed and delivery..................................................................................139
Stacker jam detection.........................................................................................................141
Stacker-feed jam ...............................................................................................141
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