4-2
4.1.1 Control of Transport Motor
(a) Paper transport motor for finisher is of outer rotor type DC, brushless. Its control
circuit is shown below.
(b) Pulse signals from P35 of P.C.B. (PWB-A) IC1 controls the speed. Signal L from
IC1-P10 starts the motor, while signal H stops the motor.
M1
8
7
6
5
4
3
2
1
PJ6 6
GND
GND
DC24V
2
1
4
3
R10
IC7
RA1
79
P10
IC1
P35
99
IC7
R10
PJ6 7
PAPER FEED MOTOR
4.1.2 Control of Jogging Motor
(a) Jogging motor, which jogs papers in stack and carries out offset operation, is a
two phase exciting type, two phase pulse motor. Its control circuit is shown below.
(b) Each pulse signal output from Q1, Q2, Q3, Q4, of IC12 in P.C.B. (PWB-A) excites
and rotates the coil in each phase.
(c) Motor is stopped when signals from Q1, Q2, Q3, Q4, of IC12 change to L and the
power supply to motor coil is cut off.
1
2
3
4
5
6
1
2
3
4
5
6
SM
SM
DC24V
DC24V
PJ5
6
B
PJ5
4
B
PJ5
5
A
PJ5
3
A
15
10
7
2
14
11
6
3
O4
O3
O2
O1
I4
I3
I2
I1
COM
COM
9
15
IC15
9
6
5
2
O4
O3
O2
O1
RA3
IC9
IC12
2
1
4
3
6
5
8
9
M2
DC5V
JOGGING MOTOR
