HP — HP Color Laserjet CP4020, CP4520 (service manual (EN)

Lifter-drive assembly ........................................................................................................ 173 Remove the lifter-drive assembly .................................................................... 173 Lifter base assembly ........................................................................................................ 175 Remove the lifter base assembly .................................................................... 175 Reinstall the lifter base assembly .................................................................... 176 Tray-pickup drive assembly .............................................................................................

178 Remove the tray-pickup drive assembly ......................................................... 178 Tray-pickup assembly ...................................................................................................... 180 Remove the tray-pickup assembly .................................................................. 180 Laser/scanner assembly (Y/M) ........................................................................................ 186 Remove the laser/scanner assembly (Y/M) .................................................... 187 Laser/scanner assembly (C/Bk) .......................................................................................

190 Remove the laser/scanner assembly (C/Bk) ................................................... 191 Reinstall the protective glass cleaner (PGC) actuators .................. 193 High-voltage power supply upper (HVPS-T) .................................................................... 196 Remove the high-voltage power supply upper ................................................ 196 Reinstall the high-voltage power supply upper ............................... 198 Yellow, magenta, cyan, and black drum motors .............................................................. 199 Remove the yellow, magenta, cyan, and black drum motors ..........................

199 Fuser motor ..................................................................................................................... 200 Remove the fuser motor .................................................................................. 201 ITB motor ......................................................................................................................... 202 Remove the ITB motor .................................................................................... 202 Main-drive assembly ........................................................................................................

203 Remove the main-drive assembly ................................................................... 204 Reinstall the main-drive assembly .................................................. 207 Fuser-drive assembly ...................................................................................................... 211 Remove the fuser-drive assembly ................................................................... 212 Reinstall the fuser-drive assembly .................................................. 215 Optional paper feeder assemblies (1 x 500-sheet and 3 x 500-sheet) .............................................

216 Front door (optional paper feeder) ................................................................................... 216 Rear cover (optional paper feeder) .................................................................................. 218 Right-front cover (optional paper feeder) ......................................................................... 219 Right door (optional paper feeder) ................................................................................... 220 Left cover (optional paper feeder) ....................................................................................

222 Remove the left cover (optional paper feeder) ................................................ 222 Right cover (optional paper feeder) ................................................................................. 224 Remove the right cover (optional paper feeder) .............................................. 224 Rear-right cover (optional paper feeder) .......................................................................... 225 Remove the rear-right cover (optional paper feeder) ...................................... 225 Pickup assembly (optional paper feeder) ........................................................................

226 Remove the pickup assembly (optional paper feeder) .................................... 226 Lifter assembly (optional paper feeder) ........................................................................... 229 Remove the lifter assembly (optional paper feeder) ....................................... 229 ENWW ix