Read Sharp AR-F12 (serv.man8) Service Manual online
8-42
CHAPTER 8 TROUBLESHOOTING
3.
Faulty guide motor
4.
Faulty alignment motor
Checks
Check the guide home
position sensor. Is the sensor
normal?
position sensor. Is the sensor
normal?
Does the guide motor
operate at a specific timing?
operate at a specific timing?
Replace the guide motor. Is
the problem corrected?
the problem corrected?
Cause
Guide home position
sensor (PI13S)
sensor (PI13S)
Saddle stitch controller
PCB
PCB
Guide motor (M3S)
Saddle stitch controller
PCB
PCB
Step
1
2
3
Yes/No
No
Yes
No
Yes
No
Action
Replace the sensor.
Replace the saddle
stitch controller PCB.
stitch controller PCB.
Check the guide plate
drive mechanism. If a
fault is found, correct
it. Otherwise, go to
step 3.
drive mechanism. If a
fault is found, correct
it. Otherwise, go to
step 3.
End.
Replace the saddle
stitch controller PCB.
stitch controller PCB.
Checks
Check the alignment plate
home position sensor. Is the
sensor normal?
home position sensor. Is the
sensor normal?
Does the alignment motor
operate at a specific timing?
operate at a specific timing?
Replace the alignment
motor. Is the problem
corrected?
motor. Is the problem
corrected?
Cause
Alignment plate home
position sensor (PI5S)
position sensor (PI5S)
Saddle stitch controller
PCB
PCB
Alignment motor
(M5S)
(M5S)
Saddle stitch controller
PCB
PCB
Step
1
2
3
Yes/No
No
Yes
No
Yes
Action
Replace the sensor.
Replace the saddle
stitch controller PCB.
stitch controller PCB.
Check the alignment
plate drive
mechanism. If a fault
is found, correct it.
Otherwise, go to step
3.
plate drive
mechanism. If a fault
is found, correct it.
Otherwise, go to step
3.
End.
Replace the saddle
stitch controller PCB.
stitch controller PCB.
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