CHAPTER 5 TROUBLESHOOTING
5-36
COPYRIGHT © 1999 CANON INC.
CANON FINISHER - D1 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
Cause
Tray position
Tray B upper position
sensor (PI20)
Step
1
2
Checks
Is tray B above the tray B
paper sensor PCB (S4)?
Is the tray B upper position
sensor (PI20) normal?
Yes/No
Yes
No
Yes
Action
Lower the tray under the
sensor.
Check the wiring from the
finisher controller PCB to
the sensor; if normal,
replace the sensor.
Replace the finisher
controller PCB.
11. E542 (tray B upper position sensor PI20; at power-on)
12. E542 (tray B lift motor M12; during operation)
Cause
36 VDC power supply
Tray lifter mechanism
Tray B lifter motor (M12)
Tray B lock sensor (PI23)
Tray B upper position
sensor (PI20), Tray B
lower position sensor
(PI21)
Step
1
2
3
4
5
Checks
Is 36 VDC supplied to J114-
1 on the finisher controller
PCB?
Is there a fault or an obstacle
in the tray lifter mechanism?
Does the tray lifter motor
rotate at the correct timing?
Is the tray B lock sensor
normal?
Is the tray B upper position
sensor and the lower position
sensor normal?
Yes/No
No
Yes
No
No
Yes
No
Action
Check the supply path of
the 36 VDC; if faulty,
correct it.
Remove the fault or the
obstacle.
Replace the tray B lifter
motor driver PCB.
Replace the sensor.
Replace the appropriate
sensor.
Replace the finisher
controller PCB.