Post-service test ............................................................................................................................... 101
Print-quality test ............................................................................................................... 101
Print cartridge ................................................................................................................................... 102
Tray 2 cassette ................................................................................................................................. 103
Rollers and pads .............................................................................................................................. 104
Pickup roller; Tray 1 ......................................................................................................... 104
Pickup roller assembly; Tray 2 ......................................................................................... 107
Separation-pad assembly; Tray 2 .................................................................................... 110
Transfer roller .................................................................................................................. 111
External panels, covers, and doors .................................................................................................. 114
DIMM door (HP LaserJet P2050 Series only) .................................................................. 114
Right cover ....................................................................................................................... 115
Reinstall the right cover ................................................................................... 117
Left cover ......................................................................................................................... 118
Rear cover, rear door, and duplex-paper-feed assembly ................................................ 120
Top-cover assembly ........................................................................................................ 124
Cartridge-door assembly and front cover ........................................................................ 127
Reinstall the cartridge-door assembly and front cover .................................... 129
Internal assemblies .......................................................................................................................... 130
Formatter PCA; HP LaserJet P2030 Series .................................................................... 130
Formatter PCA; HP LaserJet P2050 Series .................................................................... 132
Paper-pickup-gear assembly ........................................................................................... 134
Reinstall the paper-pickup-gear assembly ...................................................... 135
Cartridge-door switch ....................................................................................................... 137
Tray 1 pickup solenoid ..................................................................................................... 138
Fan ................................................................................................................................... 140
Reverse-sensor assembly; HP LaserJet P2050 Series ................................................... 142
Power-switch assembly ................................................................................................... 144
Connecting PCA .............................................................................................................. 147
Inlet-cable assembly ........................................................................................................ 150
Registration assembly ..................................................................................................... 152
Laser/scanner assembly .................................................................................................. 156
Fuser ................................................................................................................................ 158
Reinstall the fuser ........................................................................................... 162
Engine controller unit (ECU) ............................................................................................ 163
Reinstall the ECU ............................................................................................ 170
Paper-feed-guide assembly ............................................................................................. 172
Main motor ....................................................................................................................... 174
Face-down-drive or duplexing-paper-feed assembly ....................................................... 177
Duplex solenoid; HP LaserJet P2050 Series ................................................................... 180
Paper-retaining-delivery assembly .................................................................................. 181
7 Solve problems
ENWW vii
