Canon DADF-Q1, Service Manual

Page: 43 / 156

Chapter 2
2-21
F-2-33
2.5.2 Controlling the Belt Motor (M2)
0011-2386
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
F-2-34
[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.
T-2-10
Error code: E402
- fault in the belt motor (M2)
- fault in the belt motor clock sensor (PI1)
- fault in the ADF controller PCB
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
M5
M2
Delivery tray
Delivery roller
Feeding belt
IC18
CPU Q601
+24U
+24R
A
A*
B
B*
M2
+5R
IN_B
IN_A
INB
INA
B-Vref
J602
J71 J7
PI 1
J12
BTCLK
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
14
3
3
1
4
6
2
5
[1]