COPYRIGHT© 2001 CANON INC.
2000 2000 2000 2000
CANON SADDLE FINISHER K3/K4 REV.0 MAR. 2001
5-72
CHAPTER 5 TROUBLESHOOTING
3 Troubleshooting Malfunctions
3.1 Finisher Unit
3.1.1 E500 (communication with copier)
Finisher controller PCB, Cover DC controller PCB
1) Turn off and then on the copier's power switch. Is the problem cor-
rected?
YES: End.
Fuse PCB
2) Are the communication line of the fuse PCB and the grounding
wire normal?
J716-7 and J717-1
J716-6 and J717-3
J716-4 and J717-4
J716-5 and J717-5
NO:
Replace the fuse PCB.
Switching regulator
3) Is the voltage between J85-1 (+) and J85-2 (-) on the stitching regu-
lator 5 V?
NO:
Replace the switching regulator.
Wiring
4) Is the wiring between the finisher controller PCB and the switching
regulator normal?
5) Is the wiring between the copier DC controller PCB and the fuse
PCB normal?
NO:
Correct the wiring.
Finisher controller PCB, Copier DC controller PCB
6) Replace the finisher controller PCB. Is the problem corrected?
YES: End.
NO:
Replace the copier DC controller PCB.