HP Color LaserJet Enterprise CM4540 MFP Series - Page 9

Document feeder/scanner motor and fan control ......................................................... 71
Legal detection sensor sequence ............................................................................... 72
Fan timing sequence ................................................................................................ 72
Optical assembly operation ...................................................................................... 73
Image data path ..................................................................................................... 73
Document feeder/scanner paper path and sensors ...................................................... 74
Document feeder pick mechanism ............................................................................. 75
3-bin stapling mailbox ............................................................................................................ 76
Motor control .......................................................................................................... 78
Failure detection ..................................................................................................... 79
Delivery operation ................................................................................................... 80
Staple operation ...................................................................................... 81
Stapler .................................................................................................... 86
Output bin 3 lift operation ......................................................................... 87
Stacker mode ......................................................................................................... 88
Mailbox/job separator mode ................................................................................... 89
Jam Detection ......................................................................................................... 90
Automatic Delivery .................................................................................................. 91
2 Removal and replacement .............................................................................................. 93
Introduction ........................................................................................................................... 94
Removal and replacement strategy ........................................................................................... 94
Electrostatic discharge ............................................................................................................ 95
Required tools ........................................................................................................................ 95
Before performing service ....................................................................................................... 96
After performing service .......................................................................................................... 96
Post-service test ...................................................................................................................... 97
Print-quality test ....................................................................................................... 97
Parts removal order ................................................................................................................ 98
Customer self repair (CSR) components ................................................................................... 100
Control panel ....................................................................................................... 100
Print cartridges ...................................................................................................... 103
Toner-collection unit ............................................................................................... 104
Formatter PCA ...................................................................................................... 106
Fax card .............................................................................................................. 107
Remove the fax card ............................................................................... 107
Hard drive ........................................................................................................... 108
Remove the hard drive ............................................................................ 108
Tray .................................................................................................................... 111
Fuser ................................................................................................................... 112
Feed and separation rollers (Trays 2-5) .................................................................... 113
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