HP LaserJet 3050 - Install Output Bin Support; Install Automatic Document Feeder (ADF) Input Tray

Electrostatic discharge ..................................................................................................... 100
Required tools .................................................................................................................. 101
Before performing service ................................................................................................ 101
After performing service ................................................................................................... 101
Post-service tests ............................................................................................................ 101
Test 1 (print-quality test) ................................................................................. 101
Test 2 (copy-quality test) ................................................................................. 102
Test 3 (fax-quality test) .................................................................................... 102
Parts removal order ......................................................................................................... 103
HP LaserJet 3050 all-in-one ............................................................................................................. 106
Link assemblies and scanner support-frame springs ...................................................... 107
Scanner side covers ........................................................................................................ 109
Separation-pad set .......................................................................................................... 111
Control-panel bezel .......................................................................................................... 112
Control-panel assembly ................................................................................................... 114
Media lever and media-lever torsion spring ..................................................................... 115
Separation-pad assembly ................................................................................................ 116
Scanner assembly ........................................................................................................... 118
Scanner assembly top cover ........................................................................................... 126
Top-cover assembly ........................................................................................................ 129
Pickup roller ..................................................................................................................... 130
White platen ..................................................................................................................... 131
HP LaserJet 3052/3055 all-in-one .................................................................................................... 132
ADF input tray .................................................................................................................. 132
Flatbed lid ........................................................................................................................ 133
Link assemblies and scanner support-frame springs ...................................................... 136
Control-panel bezel .......................................................................................................... 138
Control-panel assembly ................................................................................................... 139
ADF separation pad ......................................................................................................... 141
ADF input-tray flag ........................................................................................................... 142
ADF pickup roller and load-arm assembly (HP LaserJet 3052/3055 all-in-one) .............. 143
ADF scanner glass .......................................................................................................... 146
Scanner assembly ........................................................................................................... 148
Printer (product base) ....................................................................................................................... 156
Printer separation pad ..................................................................................................... 157
Print cartridge .................................................................................................................. 158
Printer pickup roller .......................................................................................................... 159
Installing the scanner cushions ........................................................................................ 162
Media input tray ............................................................................................................... 163
Transfer roller .................................................................................................................. 165
Side covers ...................................................................................................................... 167
Print-cartridge door .......................................................................................................... 169
Rear cover and fuser cover ............................................................................................. 170
Front cover ....................................................................................................................... 172
Speaker assembly ........................................................................................................... 174
Power supply ................................................................................................................... 175
Formatter and line interface unit (LIU) ............................................................................. 178
Scanner support-frame .................................................................................................... 182
Engine controller unit (ECU) ............................................................................................ 185
Laser/scanner assembly .................................................................................................. 189
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