Read Sharp AR-F12 (serv.man8) Service Manual online
8-45
CHAPTER 8 TROUBLESHOOTING
9.
Disconnected sensor connector (related to PI13S)
10. Disconnected sensor connector (related to PI14S)
Checks
Are the connectors of the
guide home position sensor
and the saddle stitch
controller PCB connected
correctly?
guide home position sensor
and the saddle stitch
controller PCB connected
correctly?
Is the wiring between the
sensor and the saddle
stitcher broken?
sensor and the saddle
stitcher broken?
Is 5 VDC present at J9-7 on
the saddle stitch controller
PCB?
the saddle stitch controller
PCB?
Is J9-8 on the saddle stitch
controller PCB grounded
correctly?
controller PCB grounded
correctly?
Cause
Guide home position
sensor (PI13S;
disconnected)
sensor (PI13S;
disconnected)
Wiring
Power supply
Ground
Step
1
2
3
4
Yes/No
No
Yes
No
No
Action
Connect the
connectors.
connectors.
Correct the wiring.
Replace the saddle
stitch controller PCB.
stitch controller PCB.
Checks
Are the connectors of the
paper pushing plate home
position sensor and the
saddle stitch controller PCB
connected correctly?
paper pushing plate home
position sensor and the
saddle stitch controller PCB
connected correctly?
Is the wiring between the
sensor and the saddle
stitcher broken?
sensor and the saddle
stitcher broken?
Is 5 VDC present at J9-10
on the saddle stitch
controller PCB?
on the saddle stitch
controller PCB?
Is J9-11 on the saddle stitch
controller PCB grounded
correctly?
controller PCB grounded
correctly?
Cause
Paper pushing plate
home position sensor
(PI14S; disconnected)
home position sensor
(PI14S; disconnected)
Wiring
Power supply
Ground
Step
1
2
3
4
Yes/No
No
Yes
No
No
Action
Connect the
connectors.
connectors.
Correct the wiring.
Replace the saddle
stitch controller PCB.
stitch controller PCB.
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