Tray Ascent/Descent Control - Canon Finisher-AB1 Service Manual

3.3.2 Tray Ascent/Descent Control

The tray A/B is moved up or down by controlling 2 motors (M22, M23) in response to the instructions from the
finisher controller.
The machine uses 2 sensors (PS34, PS35) to check for faults in these motors.
The sensor monitors the rotation of the motors; when any of the following occurs, the finisher controller PCB
will stop the drive to the motor and, at the same time, will communicate the fact to the host machine:
Related Error Code
- E540 (fault in tray A)
While the tray A motor (M22) is rotating, the tray A lift motor rotation detection signal is absent for 250 msec
or more.
- E542 (fault in tray A)
While the tray B motor (M23) is rotating, the tray B lift motor rotation detection signal is absent for 250 msec
or more.
Tray A
Tray B
[1]Tray A lift motor drive signal
[2]Tray A lift motor rotation detection signal
M22:tray A lift motor
M23:tray B lift motor
Finisher controller PCB
[1]
M22
PS34
M23
PS35
F-3-5
[3]Tray B lift motor drive signal
[4]Tray B lift motor rotation detection signal
PS34:tray A lift motor rotation sensor
PS35:tray B lift motor rotation sensor
[2] [3] [4]
Chapter 3
0015-2073
3-5