Faulty Paper Folding Motor; Faulty Guide Motor - Sharp AR-FN8 Service Manual

2.

Faulty paper folding motor

Cause
Paper folding motor
clock sensor (PI4S)
Paper folding home
position sensor (PI21S)
Saddle stitcher controller
PCB
Paper folding motor
(M2S)
Saddle stitcher controller
PCB
3.

Faulty guide motor

Cause
Guide home position
sensor (PI13S)
Saddle stitcher controller
PCB
Guide motor (M3S)
Saddle stitcher controller
PCB
Step Checks
1 Check the paper folding motor
clock sensor. Is the sensor
normal?
2 Check the paper folding home
position sensor. Is the sensor
normal?
3 Does the paper folding motor
operate at a specific timing?
4 Replace the paper folding
motor. Is the problem
corrected?
Step Checks
1 Check the guide home
position sensor. Is the sensor
normal?
2 Does the guide motor operate
at a specific timing?
3 Replace the guide motor. Is
the problem corrected?
CHAPTER 7 TROUBLESHOOTING
Yes/No
No Replace the sensor.
No Replace the sensor.
Yes Replace the saddle
stitcher controller
PCB.
No Check the paper
folding roller drive
mechanism. If a fault
is found, correct it.
Otherwise, go to step
4.
Yes End.
No Replace the saddle
stitcher controller
PCB.
Yes/No
No Replace the sensor.
Yes Replace the saddle
stitcher controller
PCB.
No Check the guide plate
drive mechanism. If a
fault is found, correct
it. Otherwise, go to
step 3.
Yes End.
No Replace the saddle
stitcher controller
PCB.
Action
Action
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