DOWNLOAD Sharp AR-F11 (serv.man8) Service Manual ↓ Size: 453.77 KB | Pages: 55 in PDF or view online for FREE

Checks

Check the paper pushing
plate top position sensor. Is
the sensor normal?

Does the paper pushing
plate motor operate at a
specific timing?

Replace the paper pushing
plate motor. Is the problem
corrected?

Cause

Paper pushing top
position sensor (PI15S)

Saddle stitch controller
PCB

Paper pushing plate
motor (M8S)

Saddle stitch controller
PCB

Step

1

2

3

Yes/No

No

Yes

No

Yes

No

Action

Replace the sensor.

Replace the saddle
stitch controller PCB.

Check the paper
pushing plate drive
mechanism. If a fault
is found, correct it.
Otherwise, go to step
3.

End.

Replace the saddle
stitch controller PCB.

Checks

Check the paper pushing
plate motor clock sensor. Is
the sensor normal?

Does the paper pushing
plate motor operate at a
specific timing?

Replace the paper pushing
plate motor. Is the problem
corrected?

Cause

Paper pushing plate
motor clock sensor
(PI1S)

Saddle stitch controller
PCB

Paper pushing plate
motor (M8S)

Saddle stitch controller
PCB

Step

1

2

Yes/No

No

Yes

No

Yes

No

Action

Replace the sensor.

Replace the saddle
stitch controller PCB.

Check the paper
pushing plate drive
mechanism. If a fault
is found, correct it.
Otherwise, go to step
3.

End.

Replace the saddle
stitch controller PCB.

Checks

Are the connectors of the
guide home position sensor
and the saddle stitch
controller PCB connected
correctly?

Is the wiring between the
sensor and the saddle
stitcher broken?

Is 5 VDC present at J9-7 on
the saddle stitch controller
PCB?

Is J9-8 on the saddle stitch
controller PCB grounded
correctly?

Cause

Guide home position
sensor (PI13S;
disconnected)

Wiring

Power supply

Ground

Step

1

2

3

4

Yes/No

No

Yes

No

No

Action

Connect the
connectors.

Correct the wiring.

Replace the saddle
stitch controller PCB.

Checks

Are the connectors of the
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?

Is 5 VDC present at J9-10
on the saddle stitch
controller PCB?

Is J9-11 on the saddle stitch
controller PCB grounded
correctly?

Cause

Paper pushing plate
home position sensor
(PI14S; disconnected)

Wiring

Power supply

Ground

Step

1

2

3

4

Yes/No

No

Yes

No

No

Action

Connect the
connectors.

Correct the wiring.

Replace the saddle
stitch controller PCB.

Checks

Are the connectors of the
paper pushing plate top
position sensor and the
saddle stitch controller PCB
connected correctly?

Is the wiring between the
sensor and the saddle
stitcher broken?

Is 5 VDC present at J9-13
on the saddle stitch
controller PCB?

Is J9-14 on the saddle stitch
controller PCB grounded
correctly?

Cause

Paper pushing plate
home position top
position sensor (PI15S;
disconnected)

Wiring

Power supply

Ground

Step

1

2

3

4

Yes/No

No

Yes

No

No

Action

Connect the
connectors.

Correct the wiring.

Replace the saddle
stitch controller PCB.

Checks

Check the switch actuator of
the inlet door. Do the switch
and the sensor operate
correctly?

Check the inlet door switch.
Is the switch normal?

Measure the voltage at J10-
8 on the saddle stitch
controller PCB with the inlet
cover open. Is it 5 V?

Measure the voltage
between J19-1 (+) and J19-2
(

−

) on the finisher controller

PCB. Is it 24 V?

Cause

Switch actuator

Inlet door switch
(MS1S)

Inlet cover sensor
(PI9S)

Power supply, wiring

Step

1

2

3

4

Yes/No

No

No

Yes

No

Yes

Action

Correct the
mechanism.

Replace the switch.

The sensor is faulty.
Replace the sensor.

Replace the finisher
controller PCB.

Check the wiring
between J19 on the
finisher controller
PCB and J1 on the
saddle stitch
controller PCB. If a
fault is found, correct
it. Otherwise, replace
the saddle stitch
controller PCB.

Checks

Check the switch actuator of
the front door. Do the switch
and the sensor operate
correctly?

Check the front door switch.
Is the switch normal?

Measure the voltage at J11-
12 on the saddle stitch
controller PCB with the
front door open. Is it 5 V?

Cause

Switch actuator

Front door switch
(MS2S)

Front door open/closed
sensor (PI12S)

Step

1

2

3

Yes/No

No

No

Yes

No

Action

Correct the
mechanism.

Replace the switch.

The sensor is faulty.
Replace the sensor.

Replace the saddle
stitch controller PCB.

Checks

Check the delivery door
switch actuator. Do the
switch and the sensor
operate correctly?

Check the delivery door switch.
Is the switch normal?

Measure the voltage at J11-
9 on the saddle stitch
controller PCB with the
delivery door open. Is it 5
V?

Cause

Switch actuator

Delivery switch (MS3S)

Delivery cover sensor
(PI3S)

Step

1

2

3

Yes/No

No

No

Yes

No

Action

Correct the
mechanism.

Replace the switch.

The sensor is faulty.
Replace the sensor.

Replace the saddle
stitch controller PCB.