Motors and fans
The MFP print engine has 10 motors: two brushless dc motors, one dc motor that has brushes, four
fan motors, and three stepping motors. The MFP print engine also has four cooling fans.
Table 5-1
Print-engine motors describes the function of each motor, and Table 5-2 Print-engine fans describes
the function of each fan.
Motor and fan functions
Table 5-1 Print-engine motors
Name Purpose Type Rotation Speed Failure detection
Main motor (M101) Drives the
following rollers:
tray 2 pickup,
feed, separation,
tray 1 pickup, pre-
transfer, pressure,
and delivery
DC motor
(brushless)
Clockwise 2-speed Yes
Drum motor
(M102)
Drives the
transfer-charging
roller,
photosensitive
drum, and
developing
cylinder
DC motor
(brushless)
Clockwise 2-speed Yes
Lifter motor (M103) Moves the lifting
plate
DC motor (with
brushes)
Clockwise 1-speed Yes
Crossing motor
(M104)
Drives the
crossing roller
Stepping motor Clockwise
Counterclockwise
3-speed
2-speed
No
Reversing motor
(M105)
Drives the
reversing roller
Stepping motor Clockwise
Counterclockwise
3-speed
2-speed
No
Delivery motor
(M106)
Drives the
intermediate
delivery roller and
the delivery roller
Stepping motor Clockwise 4-speed No
Table 5-2 Print-engine fans
Name Purpose Motor type Motor rotation Motor speed Failure detection
Cooling fan 1
(FN101)
Cools the interior
of the print engine
DC motor 2-speed Yes
Cooling fan 2
(FN102)
Cools the print-
cartridge area
DC motor 1-speed Yes
Cooling fan 3
(FN103)
Cools the
reversing-unit area
DC motor 1-speed Yes
Cooling fan 4
(FN104)
Cools the dc
controller
DC motor 1-speed Yes
86 5 Theory of operation
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