HP LASERJET ENTERPRISE M855 - Page 55

Table 1-9 Motors
Abbreviation Component name Components driven or motor function Failure detection
M1 Scanner motor (Y/M) Laser/scanner
M2 Scanner motor (C/K) Laser/scanner
M5 Pickup motor Cassette pickup roller, cassette feed roller, and MP tray
pickup roller
No
M6 Registration motor Registration roller No
M7 Cassette lifter motor Cassette lifter mechanism No
M9 Primary-transfer roller
disengagement motor
Engages or disengages the primary transfer roller No
M10 ITB motor ITB and the secondary transfer roller Yes
M11 Fuser motor Fuser roller, delivery roller, and fuser pressure roller Yes
M12 Drum motor (Y) Photosensitive drum and primary charging roller in the
yellow imaging drum
Yes
M13 Drum motor (M) Photosensitive drum and primary charging roller in the
magenta imaging drum
Yes
M14 Drum motor (C) Photosensitive drum and primary charging roller in the
cyan imaging drum
Yes
M15 Drum motor (K) Photosensitive drum and primary charging roller in the
black imaging drum
Yes
M17 Fuser shutter motor Fuser edge shutter
M18 Developer alienation
motor (C/K)
Engages and disengages the developing rollers in the
cyan- and black-imaging drums
No
M19 Developer alienation
motor (Y/M)
Engages and disengages the developing rollers in the
yellow- and magenta-imaging drums
No
M20 T1 roller alienation
motor
M21 Toner-replenishment
motor (Y/M)
M22 Toner-replenishment
motor (C/K)
M301 Duplex re-pickup
motor
Duplexing paper re-pickup roller, engages or disengages
the color sensor
No
M302 Duplex switch back
motor
Duplexing paper-reverse roller No
M303 Duplex feed motor Duplexing paper-feed roller No
ENWW Engine-control system 13