Faulty Second Feed Motor (Related To Pi5); Faulty Second Feed Motor (Related To Ms4) - Sharp AR-FN8 Service Manual

CHAPTER 7 TROUBLESHOOTING

18. Faulty second feed motor (related to PI5)

Cause
Second feed motor (M8)
Shutter mechanism
Shutter open detection
sensor (PI5)
Finisher controller PCB

19. Faulty second feed motor (related to MS4)

Cause
Second feed motor (M8)
Shutter mechanism
Shutter closed detection
switch (MS4)
Finisher controller PCB
7-40
Step Checks
1 Does the second feed motor
rotate in reverse at a specific
timing?
2 Are the shutter and the shutter
upper/lower bar engaged
correctly?
3 Turn feed roller 2 in reverse
by hand. Does the shutter
upper/lower bar move up/
down?
4 Is the shutter open detection
sensor normal?
Step Checks
1 Does the second feed motor
rotate in reverse at a specific
timing?
2 Are the shutter and the shutter
upper/lower bar engaged
correctly?
3 Turn feed roller 2 in reverse
by hand. Does the shutter
upper/lower bar move up/
down?
4 Is the shutter closed detection
switch normal?
Yes/No Action
No Replace the second
feed motor or the
finisher controller
PCB.
No Engage them correctly.
No Correct mechanism
from the shutter upper/
lower bar to the gear
of feed roller 2.
No Replace the sensor.
Yes Replace the finisher
controller PCB.
Yes/No Action
No Replace the second
feed motor or the
finisher controller
PCB.
No Engage them correctly.
No Correct the mechanism
from the shutter upper/
lower bar to the gear
of feed roller 2.
Replace the switch.
No
Replace the finisher
Yes controller PCB.