Sharp AR-651 Service Handbook page 234

[CB4] Abnormal alignment motor
Is the alignment guide home position sensor (PI6) working normally?
NO
YES
Is the wiring between the finisher controller PC board and the alignment motor (M3) correct?
YES
NO
Is there any mechanical problem with the alignment guide movement path?
YES
NO
Is the problem solved by replacing the alignment motor?
NO
YES
END
[CB5] Abnormal staple motor
Is the wiring between the stapler and the finisher controller PC board correct?
YES
NO
Is the problem solved by replacing the stapler?
NO
YES
END
AR-651/810 TROUBLE SHOOTING
Replace the sensor.
Correct the wiring.
Fix the mechanism.
Replace the finisher controller PC board.
Connect or replace the harness.
Replace the finisher controller PC board.
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