Controlling The Reversal Motor (M1); Manual Feeder Pickup/Delivery Operation - Canon DADF-Q1 Service Manual

Chapter 2

2.6.6 Controlling the Reversal Motor (M1)

The following is a diagram of the circuit used to control the reversal motor (M1), which is a 4-phase stepping motor. The circuit has the following functions:
- turning off/on the motor
- controlling the direction of motor rotation
- controlling the speed of motor rotation
[1]
[1] ADF controller PCB
[2] reversal motor drive PCB
M1: reversal motor
PI5: reversal motor clock sensor
The CPU (Q18) on the ADF controller PCB sends various motor control signals to the reversal motor driver PCB, which in turn controls the motor as dictated by
these signals.

2.6.7 Manual Feeder Pickup/Delivery Operation

The machine uses 'manual feeder pickup/delivery' only for fixed reading mode.
1) When an original is placed in the manual feeder, the manual feeder placement sensor (PI12) detects it.
2) When the Start key is pressed, the machine uses the delivery roller to move the original until the lead edge of the original butts against the manual feeder regis-
tration roller (thus removing the skew).
3) The machine moves the original to move the delivery roller and the transport belt. The original stops when its lead edge reaches the reversal sensor (S1).
2-46
J71
J6
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
J14
B9
Signal name 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)
T-Vref motor rotation torque setting
+24U
+5R
J602
A
IN_B
3
IN_A
1
INB
A*
4
INA
Q601
T-Vref
B
6
+24R 2
B*
5
TRCLK
F-2-114
T-2-13
Manual feeder placement sensor(PI12)
F-2-115
Manual feeder registration sensor(S9)
F-2-116
M1
PI 5
0011-7324
0011-7325