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42 MFP unit explanation ENWW
M2 (drum) control
M2 (drum) is controlled by PRCB (printer
control board) and the motor drive power is
supplied from DCPS (DC power supply unit).
1 Operation
M2 (drum) is a motor driven by 24 VDC. It
drives the drum, toner guide roller, toner
conveyance screw, and separation claw
swing. The flywheel mechanism adopted
for M2 ensures accurate and steady
rotation.
M2 starts rotating when the START button
is pressed and stops when the specified
time lapses after completion of second
paper feeding of the last copy.
When either one of the front-left and
front-right doors of this machine opens,
MS1 (interlock MS/R) or MS2 (interlock
MS/L) actuates to stop supplying the DC
power to the motor, causing M2 to stop.
2 Signals
a Input signal
1 DRUM_EM (M2 to PRCB)
M2 (drum) rotation abnormality
detection signal
[H]: Rotation error (when motor speed
changes by 6.5 percent more or less
than the motor speed specified value)
[L]: Normal rotation
b Output signals
1 DRUM_CONT (PRCB to M2)
M2 (drum) ON/OFF control signal
[L]: M2 on
[H]: M2 off
2 CW/CCW (PRCB to M4)
M2 (drum) rotational direction
switchover signal
[L]: CW rotation
[H]: CCW rotation
3 DRUM_CLK (PRCB to M2)
M2 (drum) rotational speed control
clock signal
M4 (fuser) control
M4 (fuser) is controlled by PRCB (printer
control board) and the motor drive power is
supplied from DCPS (DC power supply unit).
1 Operation
M4 (fuser) is a motor driven by 24 VDC. It
drives the fuser roller.
M4 starts rotating when the START button
is pressed and stops when the last copied
paper has been ejected.
During the warm-up operation, M4 rotates
to rotate the fuser roller.
PRCB
DCPS
24V2
P.GND
MS1 MS2
M2
5V
P.GND
DRUM CONT
DRUM CLK
CW/CCW
DRUM EM
PRCB
DCPS
24V2
P.GND
MS1 MS2
M4
5V
P.GND
MAINM CONT
MAINM CLK
MAINM F/R
MAINM EM