Sub cover .......................................................................................................... 55 External panels, covers, doors, formatter PCA, DIMM, and EIO disk ............................... 56 EIO disk ............................................................................................................. 56 DIMM cover and DIMM ..................................................................................... 57 Reinstall the DIMM ........................................................................... 58 Formatter cover and formatter PCA ..................................................................
60 Rear-door assembly .......................................................................................... 62 Left cover .......................................................................................................... 66 Right-rear cover ................................................................................................ 68 Tray 1 (multipurpose tray) cover ....................................................................... 69 Cartridge-door assembly ................................................................................... 71 Top-right cover ..................................................................................................
73 Control panel ..................................................................................................... 74 Front-right and right-side cover assembly ......................................................... 76 Lower-right cover and bracket ........................................................................... 80 Reinstall the lower-right cover .......................................................... 82 Top cover .......................................................................................................... 84 Main assemblies ................................................................................................................
86 Tray 1 (multipurpose tray) pickup roller ............................................................. 86 Tray 1 (multipurpose tray) separation pad ........................................................ 87 Tray 2, Tray 3, or Tray 4 pickup roller ............................................................... 88 Tray 2, Tray 3, or Tray 4 separation pad ........................................................... 90 Tray 2, Tray 3, or Tray 4 base-plate roller assembly ........................................ 91 Transfer roller ....................................................................................................
92 USB port PCA ................................................................................................... 94 Power-switch assembly ..................................................................................... 96 Main fan, fan duct, and environmental sensor .................................................. 98 Fuser ............................................................................................................... 100 Registration assembly ..................................................................................... 102 Duplex media-feed assembly ..........................................................................
104 Laser/scanner ................................................................................................. 107 Engine control unit (ECU) ............................................................................... 110 Cassette pickup (Tray 2) solenoid or Tray 1 (multipurpose tray) pickup solenoid ........................................................................................................... 115 Fuser motor ..................................................................................................... 117 Sub fan and fan duct .......................................................................................
118 High-voltage power supply (HVPS) ................................................................. 121 3 Solve problems Solve problems checklist .................................................................................................................. 128 Menu map ........................................................................................................................................ 130 Troubleshooting process .................................................................................................................. 131 Determine the problem source ........................................................................................
131 Power subsystem ............................................................................................................ 132 ENWW vii