AR-FN5 (serv.man3). Maintenance Troubleshooting Circuti descriptions - Sharp Copying Equipment Service Manual (repair manual). Page 3

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3. Troubleshooting
1) Copier communication trouble (F1-00)
Check item
Step
Cause/Trouble position
Result
Remedy
Is the illustration of the finisher displayed on the LCD of
the operation panel?
1
Machine connection cable
No
Replace the machine connection
cable.
Is the power supplied normally? (5V, 3.3V)
2
Machine OP interface PWB
No
Replace the OP interface PWB.
Does replacement of the finisher PWB cancel the trouble?
3
Finisher PWB
Yes
End
2) Paper exit unit trouble
2-1) Lift-up motor trouble (F1-15)
Check item
Step
Cause/Trouble position
Result
Remedy
Do the offset tray upper limit and lower limit sensors
respond correctly?
1
Upper/lower limit sensors
No
Replace the sensor(s). Check
wiring.
Does the paper hold sensor respond correctly?
2
Paper hold sensor
No
Replace the sensor(s). Check
the wiring.
Does the lift-up encoder respond correctly?
3
Lift-up encoder
No
Replace the sensor(s). Check
wiring.
Is wiring between the finisher PWB and the lift-up motor
normal?
4
Wiring
No
Replace or repair the wiring.
Does replacement of the offset motor cancel the trouble?
5
Lift-up motor
No
Replace the lift-up motor.
Does replacement of the finisher PWB cancel the trouble?
6
Finisher PWB
Yes
End
2-2) Offset motor trouble (F1-06)
Check item
Step
Cause/Trouble position
Result
Remedy
Does the offset tray home position sensor respond
normally?
1
Offset home position sensor
No
Replace the sensor. Check the
wiring.
Is the wiring between the finisher PWB and the offset
motor proper?
2
Wiring
No
Replace or repair the wiring.
Does replacement of the offset motor cancel the trouble?
3
Offset motor
No
Replace the offset motor.
Does replacement of the finisher PWB cancel the trouble?
4
Finisher PWB
Yes
End
3) Alignment unit trouble
3-1) Side guide plate home position error (F1-01)
Check item
Step
Cause/Trouble position
Result
Remedy
Does the side guide plate position sensor respond
normally?
1
Side guide plate home position
sensor
No
Replace the sensor. Check the
wiring.
Is the wiring between the finisher PWB and the side guide
plate motor proper?
2
Wiring
No
Replace or repair the wiring.
Does replacement of the side guide plate cancel the
trouble?
3
Side guide plate motor
No
Replace the side guide plate
motor.
Does replacement of the finisher PWB cancel the trouble?
4
Finisher PWB
Yes
End
3-2) Rear edge plate home position error (F1-11)
Check item
Step
Cause/Trouble position
Result
Remedy
Does the rear edge plate position sensor respond
normally?
1
Rear edge home position sensor
No
Replace the sensor. Check the
wiring.
Is the wiring between the finisher PWB and the rear edge
plate motor proper?
2
Wiring
No
Replace or repair the wiring.
Does replacement of the rear edge plate motor cancel
the trouble?
3
Rear edge plate motor
No
Replace the rear end plate
motor.
Does replacement of the finisher PWB cancel the trouble?
4
Finisher PWB
Yes
End
4) Staple motor error (F1-08)
Check item
Step
Cause/Trouble position
Result
Remedy
Does the home position sensor respond normally?
1
Staple unit
No
Replace the staple unit.
Is the wiring of the finisher staple unit proper?
2
Wiring
No
Replace or repair the wiring.
Does replacement of the staple unit cancel the trouble?
3
Staple unit
No
Replace the staple unit.
Dose replacement of the finisher PWB cancel the trouble?
4
Finisher PWB
Yes
End
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