Specifications

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON DADF-J1 REV.0 MAR.2001
CHAPTER 2 OPERATIONS AND TIMING
2-67
2.8.3 Controlling the Reversal Motor (M1)
The following is the control circuit diagram of the reversal motor (M1). The reversal mo-
tor is a 4-phase stepping motor, and the circuit is used for the following:
• Turning on/off the motor.
• Controlling the rotation direction of the motor.
• Controlling the rotation speed of the motor.
F02-208-10
The CPU (Q1) on the ADF controller PCB serves to send various motor control signals to
the reversal motor driver PCB, which in response controls the motors:
Q1
CPU
Q601
+24R
+24R
A
A*
B
B*
M1
+5R
M1OB*
M1OB
M1OA*
M1OA
T-Vref
J62
J61J6
13
12
11
10
9
8
7
6
5
4
3
2
1
1
2
3
4
5
6
7
8
9
10
11
12
13
3
1
4
5
2
6
ADF controller PCB Reversal motor driver PCB
T02-208-02
Signal
M10A
M10A*
M10B
M10B*
T-Vref
Description
Phase control (direction, speed of rotation)
Phase control (direction, speed of rotation)
Phase control (direction, speed of rotation)
Phase control (direction, speed of rotation)
Sets motor rotation torque.