HP M750 series

Media detection .............................................................................................................. 57
Feed-speed control ......................................................................................................... 58
Fusing and delivery block ................................................................................................................. 58
Loop control .................................................................................................................... 58
Pressure roller pressurization and depressurization control ....................................... 59
Output bin full detection ................................................................................................ 61
Duplex block (duplex models only) .................................................................................................. 62
Duplex reverse and duplex feed control ........................................................................ 62
Duplex operation ............................................................................................................ 63
Jam detection .................................................................................................................................... 64
Paper feeder ........................................................................................................................................................ 67
Paper-feeder motors ........................................................................................................................ 68
Paper-feeder paper pickup and feed ................................................................................................ 69
Cassette media-size detection and cassette-presence detection ................................................... 69
Paper-feeder cassette lift operation ................................................................................................ 70
Paper-feeder jam detection .............................................................................................................. 71
Optional 3X500-sheet paper deck ...................................................................................................................... 72
Motor control ..................................................................................................................................... 74
Pickup-and-feed operation ............................................................................................................... 75
Cassette media-size detection and cassette-presence detection ................................................... 76
Cassette lift-up operation ................................................................................................................. 77
Jam detection .................................................................................................................................... 78
2 Removal and replacement ............................................................................................................................ 81
Removal and replacement strategy .................................................................................................................... 82
Cautions during removal and replacement ...................................................................................... 82
Required tools ................................................................................................................................... 83
Types of screws ................................................................................................................................. 83
Service approach ............................................................................................................................... 83
Before performing service ................................................................................................................ 84
After performing service ................................................................................................................... 84
Parts removal order .......................................................................................................................... 84
Removal and replacement procedures ............................................................................................................... 85
Print cartridges .................................................................................................................................. 85
Toner-collection unit ........................................................................................................................ 88
Fuser .................................................................................................................................................. 90
Reset the New Fuser Kit setting at the control panel .................................................... 90
Pickup roller (Tray 1) ......................................................................................................................... 91
Separation pad (Tray 1) .................................................................................................................... 92
Separation roller assembly (Tray 2) ................................................................................................. 94
Pickup roller (Tray 2) ......................................................................................................................... 95
ENWW vii