Controlling The Belt Motor (M2) - Canon DADF-Q1 Service Manual

2.5.2 Controlling the Belt Motor (M2)

The following is a diagram of the circuit used to control the belt motor, which is a 4-phase stepping motor. The circuit has the following functions:
- turning off/on the motor
- controlling the direction of the motor
- controlling the speed of motor rotation
[1]
[1] ADF controller PCB
[2] belt motor driver PCB
M2: belt motor
PI1: belt motor clock sensor
The CPU (IC18) on the ADF controller PCB sends various motor control signals to the belt motor driver PCB, which in turn controls the motor as instructed by
these signals.
Error code: E402
- fault in the belt motor (M2)
- fault in the belt motor clock sensor (PI1)
- fault in the ADF controller PCB
Feeding belt
M2
J7 J71
1 13
2 12
3 11
4 10
IC18
5 9
CPU
6 8
7 7
8 6
9 5
10 4
11 3
12 2
13 1
14
J12
3
Signals Description
INA phase control (direction and speed of rotation)
INB phase control (direction and speed of rotation)
IN_A phase control (direction and speed of rotation)
IN_B phase control (direction and speed of rotation)
B-Vref motor rotation torque setting
Delivery roller
M5
F-2-33
+24U
+5R
A
IN_B
3
IN_A
1
INB
A*
4
INA
Q601
B-Vref
B
6
+24R
2
B*
5
BTCLK
F-2-34
T-2-10
Delivery tray
J602
M2
PI 1
Chapter 2
0011-2386
2-21