Sharp AR-F15 Service Manual page 248

CHAPTER 7 TROUBLESHOOTING
14. Faulty swing motor (related to PI20)
Cause
Swing motor clock
sensor (PI20)
Finisher controller PCB
15. Faulty tray 1 lift motor (related to PI8)
Cause
Tray 1 home position
sensor (PI8)
Tray 1 lift mechanism
Finisher controller PCB
Wiring
Tray 1 lift motor (M5)
16. Faulty tray 2 lift motor (related to PI25)
Cause
Tray 2 lift mechanism
(PI25)
Finisher controller PCB
Wiring
Tray 2 lift motor (M10)
7-34
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 1 home
position sensor. Is it normal?
2 Check the tray 1 lift
mechanism. Is the
mechanism normal?
3 Is the tray 1 lift motor supplied
with 24 VDC by the finisher
controller PCB as soon as the
tray is driven?
4 Check the wiring from the
finisher controller PCB to
the tray 1 lift motor. Is the
wiring normal?
Step Checks
1 Check the tray 2 lift
mechanism. Is the
mechanism normal?
2 Is the tray 2 lift motor supplied
with 24 VDC by the finisher
controller PCB as soon as the
tray is driven?
3 Check the wiring from the
finisher controller PCB to
the tray 2 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 1 lift
motor.
Yes/No Action
No Correct the
mechanism.
No Replace the finisher
controller PCB.
No Correct the wiring.
Yes Replace the tray 2 lift
motor.