Canon SADDLE FINISHER K3 Service Manual page 385

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:
Stapling home position sensor (PI19), Finisher controller PCB
2) Try moving the stapler by hand. Does the state of J127-3 (+) on the
NO:
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-
NO:
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:
YES: Correct the wiring from the switching regulator to the fuse PCB; if
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COPYRIGHT© 2001 CANON INC.
Go to step 3
finisher controller PCB change?
Check the power to the sensor. If good, replace the stapler. If not,
replace the finisher controller PCB.
mal?
Correct or replace the faulty sensor.
Replace the switching regulator.
normal, replace the stapler.
2000 2000 2000 2000 CANON SADDLE FINISHER K3/K4 REV.0 MAR. 2001