HP Color laserjet 5500 - Page 9

500-sheet paper feeder .........................................................................................................187
Pickup and feed operations ............................................................................................187
6 Removal and replacement
Introduction ............................................................................................................................191
Removal and replacement strategy ................................................................................191
Repair notices .................................................................................................................191
Caution regarding electrostatic discharge (ESD) ...........................................................191
Required tools .................................................................................................................191
Types of screws ..............................................................................................................192
Supplies .................................................................................................................................194
Print cartridges and ETB ................................................................................................194
Covers and external components .........................................................................................196
Rear cover ......................................................................................................................196
Top cover ........................................................................................................................196
Rear top cover ................................................................................................................197
Left cover ........................................................................................................................198
Right cover ......................................................................................................................199
Reinstallation tip .............................................................................................................200
Multi-purpose tray (Tray 1) .............................................................................................200
Front cover ......................................................................................................................201
Control panel ..................................................................................................................202
Cassette cover ................................................................................................................204
Internal components (front) ...................................................................................................205
Paper pickup unit ............................................................................................................205
Cassette sensor PCB .....................................................................................................206
Multi-purpose tray sensor PCB ......................................................................................206
Paper pickup drive unit .................................................................................................207
Lifter drive unit ..............................................................................................................208
Cassette (Tray 2) paper pickup and feed rollers ............................................................210
Solenoid and clutch ........................................................................................................211
Cassette separation roller .............................................................................................212
Multi-purpose tray pickup roller ......................................................................................213
Multi-purpose tray separation pad .................................................................................214
Color registration detection unit ......................................................................................214
Internal components (left side) ..............................................................................................216
DC controller shield ........................................................................................................216
Environment sensor (HP Color LaserJet 5550 models) .................................................216
Memory tag antenna PCBs ............................................................................................217
E-label memory controller PCB ......................................................................................223
DC controller PCB ..........................................................................................................224
Cassette paper size detection switches .........................................................................225
Power supply fan ............................................................................................................226
Internal components (rear) ....................................................................................................228
Formatter ........................................................................................................................228
Low-voltage power supply ..............................................................................................229
Formatter case ................................................................................................................231
Laser/scanner units ........................................................................................................233
Internal components (right side) ...........................................................................................239
High-voltage power supply PCB .....................................................................................239
Toner level detection PCB ..............................................................................................240
High-voltage contact blocks ............................................................................................241
Door switch .....................................................................................................................242
Internal components (top) .....................................................................................................244
Discharging PCB ............................................................................................................244
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