Controlling The Delivery Motor (M5); Feeding Unit; Outline Of Cw Pickup/Delivery - Canon DADF-Q1 Service Manual

Chapter 2

2.5.3 Controlling the Delivery Motor (M5)

The following is a diagram of the circuit used to control the delivery motor (M5), which is a DC motor. The circuit has the following functions:
- turning on/off the motor
- controlling the speed of motor rotation
[1] ADF controller PCB
M5: delivery motor
PI11: delivery motor clock sensor
The CPU (IC18) on the ADF controller PCB sends the motor rotation speed signal (EJMPWM*) to the drive control block, which in turn generates the motor drive
signal (EJMD*) in keeping with the arriving signal.
The rotation of the motor generates the motor rotation signal (EJCLK), used by the CPU to monitor the operation of the motor.
Error code: E404
- fault in the delivery motor (M5)
- fault in the delivery motor clock sensor (PI11)
- fault in the ADF controller PCB
- Related adjustment -
sensor/delivery motor adjustment: when replacing the delivery motor

2.6 Feeding Unit

2.6.1 Outline of CW Pickup/Delivery

The machine uses CW pickup/delivery both in fixed reading mode and in stream reading mode.
Operation
Printing mode
The machine uses fixed reading mode for the following:
- the magnification is set to 201% or higher.
- the machine has identified the original as being of a non-default size.
- Stream reading is disabled in the host machine's service mode (FEEDER> OPTION> DOC-F-SW).
- the host machine has detected soiling of the copyboard glass.
2-22
+24R
+3.3v
IC18
EJMPWM*
CPU
IC7 Q20
EJCLK
[1]
Signal Description
EJMPWM * motor rotation speed control
EJMD * motor operation drive control
EJCLK motor operation monitoring
Mode of operation
fixed reading
stream reading
J2
11
Q19
EJMD*
12
J3
EJCLK
2
F-2-35
T-2-11
T-2-12
Printing mode
single-sided original -> singal-sided print
(magnification: between 201% and 400%)
single-sided original -> double-sided print
(magnification: between 201% and 400%)
single-sided original -> singl-sided print
(magnification: between 25% and 200%)
single-sided original -> double-sided print
(magnification: between 25% and 200%)
M5
PI 11
0011-2388
0011-7302