Reversing delay jam (face-down delivery only).................................................119 Reversing stationary jam (face-down delivery only)..........................................120 Delivery delay jam during face-down delivery...................................................120 Delivery delay jam during face-up delivery........................................................120 Delivery stationary jam during face-down delivery............................................120 Delivery stationary jam during face-up delivery.................................................120 Door-open jam...................................................................................................120 Residual-media jam...........................................................................................121 Printing from the 500-sheet feeder.....................................................................................122 500-sheet feeder pickup and feeding................................................................123 Duplex-printing unit.............................................................................................................125 Reversing/duplexing pickup...............................................................................125 Duplex printing jam detection.............................................................................126 Duplex-unit-pickup delay jam............................................................127 Duplex-unit stationary jam.................................................................127 Duplex-unit delay jam........................................................................127 3-bin mailbox feed and delivery system.............................................................................128 Stacker mode.....................................................................................................130 Mailbox mode.....................................................................................................130 Function-separator mode...................................................................................130 Jam detection.....................................................................................................130 Feed-delay jam..................................................................................130 Feed-stationary jam...........................................................................131 Residual-media jam...........................................................................131 Stapler/stacker feed and delivery system...........................................................................132 Staple mode.......................................................................................................134 Stacker mode.....................................................................................................134 Staple-jam detection..........................................................................................134 Feed-delay jam..................................................................................134 Feed-stationary jam...........................................................................135 Delivery-stationary jam......................................................................135 Residual-media jam...........................................................................135 Stapler unit.........................................................................................................135 Scanner system...................................................................................................................................137 Electrical system.................................................................................................................137 Motors and fans..................................................................................................................139 Optical assembly.................................................................................................................139 ADF feed system................................................................................................................141 Jam detection......................................................................................................................141 Residual-media jam...........................................................................................141 ADF pickup jam..................................................................................................142 ADF jam.............................................................................................................142 Registration sensor jam.....................................................................142 Read sensor jam...............................................................................142 Exit sensor jam..................................................................................142 ADF cover open jam..........................................................................................142 ADF open jam....................................................................................................142 6 Removal and replacement Removal and replacement strategy.....................................................................................................144 viii