COPYRIGHT© 2001 CANON INC.
2000 2000 2000 2000
CANON SADDLE FINISHER K3/K4 REV.0 MAR. 2001
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CHAPTER 5 TROUBLESHOOTING
3.1.8 E531 (stapler motor M11)
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1) Does the stapler operate in keeping with stapling operation?
YES: Go to step 2.
NO:
Go to step 3
Stapling home position sensor (PI19), Finisher controller PCB
2) Try moving the stapler by hand. Does the state of J127-3 (+) on the
finisher controller PCB change?
NO:
Check the power to the sensor. If good, replace the stapler. If not,
replace the finisher controller PCB.
Finisher controller PCB
3) Is 24 VSTP supplied to J771-1 (+) on the finisher controller PCB?
YES: Replace the finisher controller.
Stapler safety stitcher (front; MSW8), Stapler safety switch (rear; MSW9),
Swing guide switch (MSW2)
4) Are the three microswitches in the power route to the stapler nor-
mal?
NO:
Correct or replace the faulty sensor.
Wiring
5) Is 24 VSTP supplied by J719-1 (+) on the fuse PCB?
YES: Correct the wiring.
Switching regulator, Wiring
6) Is 24 VSTP supplied by J719-1 (+) of the switching regulator?
NO:
Replace the switching regulator.
YES: Correct the wiring from the switching regulator to the fuse PCB; if
normal, replace the stapler.
