E503 (Communication With Saddle Stitcher Unit) - Canon SADDLE FINISHER K3 Service Manual

3.1.2 E503 (communication with saddle stitcher unit)

Finisher controller PCB, Saddle stitcher controller PCB
1) Turn off and then on the copier's power stitch. Is the problem cor-
YES: End.
Wiring
2) Is the wiring between the finisher controller PCB and the saddle
NO:
Power supply, Saddle stitcher controller PCB
3) Is 24 VDC present between J1-1 (+) and -2 (-) of the saddle stitcher
NO:
YES: Replace the saddle stitcher controller PCB.
3.1.3 E505 (checksum fault)
Finisher controller PCB
1) Turn off and then on the copier's power switch. Is the problem cor-
YES: End.
2) Turn off the power, and shift bits 1, 2, 3, and 4 of SW103 of the fin-
YES: End.
NO:
COPYRIGHT© 2001 CANON INC.
rected?
stitcher controller PCB normal?
Correct the wiring.
controller PCB?
Check the wiring between the fuse PCB and the finisher controller
PCB.
rected?
isher controller PCB to ON. Turn on the power, and wait for about
10 sec. Turn off the power, and shift all bits of SW103 to OFF. Is the
problem corrected when the power is turned on once again?
Replace the finisher controller PCB.
2000 2000 2000 2000
CHAPTER 5 TROUBLESHOOTING
CANON SADDLE FINISHER K3/K4 REV.0 MAR. 2001
5-73