Faulty Paper Pushing Plate Motor (Related To Pi1S); Disconnected Sensor Connector (Related To Pi13S) - Sharp AR-FN8 Service Manual

CHAPTER 7 TROUBLESHOOTING
8.

Faulty paper pushing plate motor (related to PI1S)

Cause
Paper pushing plate
motor clock sensor
(PI1S)
Saddle stitcher controller
PCB
Paper pushing plate
motor (M8S)
Saddle stitcher controller
PCB
9.

Disconnected sensor connector (related to PI13S)

Cause
Guide home position
sensor (PI13S;
disconnected)
Wiring
Power supply
Ground
7-46
Step Checks
1 Check the paper pushing plate
motor clock sensor. Is the
sensor normal?
2 Does the paper pushing plate
motor operate at a specific
timing?
3 Replace the paper pushing
plate motor. Is the problem
corrected?
Step Checks
1 Are the connectors of the
guide home position sensor
and the saddle stitcher
controller PCB connected
correctly?
2 Is the wiring between the
sensor and the saddle stitcher
broken?
3 Is 5 VDC present at J9-7 on
the saddle stitcher controller
PCB?
4 Is J9-8 on the saddle stitcher
controller PCB grounded
correctly?
Yes/No Action
No Replace the sensor.
Yes Replace the saddle
stitcher controller
PCB.
No Check the paper
pushing plate drive
mechanism. If a fault
is found, correct it.
Otherwise, go to step
3.
Yes End.
No Replace the saddle
stitcher controller
PCB.
Yes/No Action
No Connect the
connectors.
Yes Correct the wiring.
No Replace the saddle
stitcher controller
PCB.
No