Specifications

COPYRIGHT © 2001 CANON INC. 2000 2000 2000 2000 CANON DADF-J1 REV.0 MAR.2001
CHAPTER 2 OPERATIONS AND TIMING
2-39
2.5.3 Controlling the Delivery Motor (M5)
The following is the control circuit of the delivery motor (M5). The delivery motor is a
DC motor, and the circuit is used for the following:
• Turning on/off the motor.
• Controlling the rotation speed of the motor.
F02-205-03
The CPU (Q1) on the ADF controller PCB sends the motor rotation speed signal
(EJMPWM*) to the drive control assembly, which in turn generates the motor drive signal
(EJMD*) according to the input signal.
When the motor starts to rotate, the motor rotation signal (EJCLK) is generated. The CPU
monitors the operation of the motor in reference to the motor rotation signal.
+5v
+24R
M5
Q37
Q38Q13
J2
J3
Q1
CPU
EJMD*
EJMPWM*
PI 11
EJCLKEJCLK
11
12
2
Signal
EJMPWM*
EJMD*
EJCLK
Function
Controls the motor rotation speed.
Controls the motor operation drive.
Monitors the motor operation.
T02-205-02
E404
Indicates a fault in the delivery motor (M5).
Indicates a fault in the delivery motor clock sensor (PI11).
Indicates a fault in the ADF controller PCB.
-Related Adjustments-
Sensor and delivery motor adjustment
At time of replacing the delivery motor.