Faulty Second Feed Motor (Related To Ms3) - Sharp AR-FN8 Service Manual

20. Faulty second feed motor (related to MS3)

Cause
Safety range switch
(MS3)
Shutter closed detection
switch (MS4)
Finisher controller PCB
Step Checks
1 Check the safety range switch.
Is the switch normal?
2 Is the safety range detection
switch passed correctly?
3 Check the shutter closed
detection switch. Is the switch
normal?
4 Is the shutter closed detection
switch pressed correctly?
CHAPTER 7 TROUBLESHOOTING
Yes/No
No Replace the switch.
No Correct mechanical
operation.
No Replace the switch.
No Correct the
mechanism.
Yes Replace the finisher
controller PCB.
Action
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