HP — HP Color LaserJet Enterprise M651 and HP Color LaserJet Enterprise MFP M680 - Repair Service Manual

Before proceeding, remove the following assemblies ................................................ 207 Remove the high-voltage power supply lower ............................................................ 207 Reinstall the high-voltage power supply lower ........................................ 211 Developing-disengagement motor ................................................................................................ 212 Before proceeding, remove the following assemblies ................................................ 212 Exhaust fan and fan duct ................................................................................................................

213 Remove the developing-disengagement motor ......................................................... 212 Before proceeding, remove the following assemblies ................................................ 213 Remove the exhaust fan and fan duct ......................................................................... 213 Reinstall the exhaust fan and fan duct ........................................................................ 215 Pickup motor ................................................................................................................................... 216 Before proceeding, remove the following assemblies ................................................

216 Remove the pickup motor ............................................................................................ 216 Lifter-drive assembly ...................................................................................................................... 217 Before proceeding, remove the following assemblies ................................................ 217 Lifter base assembly ....................................................................................................................... 220 Remove the lifter-drive assembly ...............................................................................

217 Before proceeding, remove the following assemblies ................................................ 220 Remove the lifter base assembly ................................................................................. 220 Reinstall the lifter base assembly ................................................................................ 222 Paper-pickup drive assembly ......................................................................................................... 223 Before proceeding, remove the following assemblies ................................................ 223 Remove the paper-pickup drive assembly ..................................................................

223 Paper-pickup assembly .................................................................................................................. 226 Before proceeding, remove the following assemblies ................................................ 226 Laser/scanner assembly (Y/M) ....................................................................................................... 233 Remove the paper-pickup assembly ........................................................................... 227 Before proceeding, remove the following assemblies ................................................

233 Remove the laser/scanner assembly (Y/M) ................................................................. 234 Laser/scanner assembly (C/K) ........................................................................................................ 237 Before proceeding, remove the following assemblies ................................................ 237 Remove the laser/scanner assembly (C/K) .................................................................. 238 Reinstall the protective glass cleaner (PGC) actuators ............................. 240 High-voltage power supply upper (HVPS-T) ..................................................................................

243 Before proceeding, remove the following assemblies ................................................ 243 Remove the high-voltage power supply upper ........................................................... 244 Reinstall the high-voltage power supply upper ........................................ 245 Yellow, magenta, cyan, and black drum motors ............................................................................ 246 Before proceeding, remove the following assemblies ................................................ 246 Remove the yellow, magenta, cyan, and black drum motors .....................................

247 Fuser motor ..................................................................................................................................... 248 x ENWW