Faulty Swing Motor (Related To Pi20); Faulty Tray Lift Motor (Related To Pi8) - Sharp AR-FN8 Service Manual

CHAPTER 7 TROUBLESHOOTING

14. Faulty swing motor (related to PI20)

Cause
Swing motor clock
sensor (PI20)
Finisher controller PCB

15. Faulty tray lift motor (related to PI8)

Cause
Tray home position
sensor (PI8)
Tray lift mechanism
Finisher controller PCB
Wiring
Tray lift motor (M5)
7-38
Step Checks
1 Check the swing motor clock
sensor. Is the sensor normal?
2 Does the voltage of the swing
motor between J11-6 and -7
on the finisher controller PCB
reach 24 V at a specific
rotation timing?
Step Checks
1 Check the tray home position
sensor. Is it normal?
2 Check the tray lift mechanism.
Is the mechanism normal?
Is the tray lift motor supplied
3 with 24 VDC by the finisher
controller PCB as soon as the
tray is driven?
Check the wiring from the
4 finisher controller PCB to the
tray lift motor. Is the wiring
normal?
Yes/No Action
No Replace the sensor.
No Replace the finisher
controller PCB.
Yes Check the wiring from
the motor to the
finisher controller
PCB. If normal,
replace the motor.
Yes/No Action
No Replace the sensor.
No Correct the
mechanism.
No Replace the finisher
controller PCB.
No Correct the wiring.
Yes Replace the tray lift
motor.