Sharp AR-F11 (serv.man8) Service Manual ▷ View online
8-48
CHAPTER 8 TROUBLESHOOTING
Checks
Check the horizontal
registration home position
sensor. Is the sensor normal?
registration home position
sensor. Is the sensor normal?
Is the wiring between the
horizontal registration home
position sensor and the
finisher controller PCB
normal?
horizontal registration home
position sensor and the
finisher controller PCB
normal?
Is there any problem with
the horizontal registration
mechanism?
the horizontal registration
mechanism?
Replace the punch driver
PCB. Is the problem
corrected?
PCB. Is the problem
corrected?
Cause
Horizontal registration
home position sensor
(PI1P)
home position sensor
(PI1P)
Wiring
Horizontal registration
mechanism
mechanism
Horizontal registration
motor (M2P)
motor (M2P)
Punch driver PCB
Step
1
2
3
4
Yes/No
No
No
Yes
No
No
Yes
Action
Replace the sensor.
Correct the wiring.
Correct the horizontal
registration
mechanism.
registration
mechanism.
Replace the horizontal
registration motor.
registration motor.
Replace the finisher
controller PCB.
controller PCB.
End.
Checks
Check the punch motor clock
sensor. Is the sensor normal?
sensor. Is the sensor normal?
Check the punch home
position sensor. Is the sensor
normal?
position sensor. Is the sensor
normal?
Is the wiring between the
punch home position sensor
and the finisher controller
PCB normal?
punch home position sensor
and the finisher controller
PCB normal?
Is there any trouble with the
punch mechanism?
punch mechanism?
Replace the punch driver
PCB. Is the problem
corrected?
PCB. Is the problem
corrected?
Cause
Punch motor clock
sensor (PI2P)
sensor (PI2P)
Punch home position
sensor (PI3P)
sensor (PI3P)
Wiring
Punch mechanism
Punch motor (M1P)
Punch driver PCB
Step
1
2
3
4
5
Yes/No
No
No
No
Yes
No
No
Yes
Action
Replace the sensor.
Replace the sensor.
Correct the wiring.
Correct the punch
mechanism.
mechanism.
Replace the punch
motor.
motor.
Replace the finisher
controller PCB.
controller PCB.
End.
C.
Puncher Unit (option)
1.
Faulty punch motor
2.
Faulty horizontal registration motor
8-49
CHAPTER 8 TROUBLESHOOTING
D.
Inserter Section (Option)
1.
Inserter operation failure
Checks
Is the interface cable
connected properly?
connected properly?
Is DC+24V supplied to the
FUSE1?
FUSE1?
Is DC+5V supplied to the
TP1?
TP1?
Is DC+24V supplied to the
TP57?
TP57?
Does the empty sensor
(TP49) become 0V when
there is a paper?
(TP49) become 0V when
there is a paper?
Cause
Interface cable
FUSE1
TP1
TP57
Empty sensor (TP49)
Inserter main board
Step
1
2
3
4
5
Yes/No
No
No
No
No
No
Yes
Action
Connect the cable
properly.
properly.
Check the FUSE1
and replace it. Check
the copier.
and replace it. Check
the copier.
Check the TP1 and
the copier.
the copier.
Check the inserter
joint switch.
joint switch.
Check the empty
sensor.
sensor.
Check the inserter
main board and
replace it.
main board and
replace it.
Checks
Is the load of the motor
shaft normal?
shaft normal?
Is the power voltage
supplied to the motor
connectors?
supplied to the motor
connectors?
Is the excitation pattern
signal supplied to the motor
connectors?
signal supplied to the motor
connectors?
Cause
Motor load
Power voltage
Signal
Motor
Step
1
2
3
Yes/No
No
No
No
Yes
Action
Adjust the structure
and remove
extraneous materials.
and remove
extraneous materials.
Check the connectors
and PC board, and
replace them.
and PC board, and
replace them.
Check the PC board
and replace it.
and replace it.
Check the motor and
replace it.
replace it.
2.
Motor operation failure
3.
Communication failure
Checks
Is the interface cable
normal?
normal?
Cause
Interface cable
PC board
Step
1
Yes/No
No
Yes
Action
Replace the interface
cable.
cable.
Check the PC board
and replace it.
and replace it.
8-50
CHAPTER 8 TROUBLESHOOTING
4.
Size detection failure
Checks
Does the paper length
sensor (TP48) become +5V
when there are papers?
sensor (TP48) become +5V
when there are papers?
Does the separation sensor
(TP50) become +5V when
there are papers?
(TP50) become +5V when
there are papers?
Does the output (TP47) of the
paper width detection volume
become more than +4V with the
guide broadened and less than
+2.5V with the guide narrowed?
paper width detection volume
become more than +4V with the
guide broadened and less than
+2.5V with the guide narrowed?
Are the separation roller and
paper not slipping?
paper not slipping?
Cause
Paper length sensor
Separation sensor
Paper width detection
Separation roller
Step
1
2
3
4
Yes/No
No
No
No
No
Yes
Action
Check the paper
length sensor and
replace it.
length sensor and
replace it.
Check the separation
sensor and replace it.
sensor and replace it.
Check the paper
width detection
volume and replace
it.
width detection
volume and replace
it.
Check the PC board
and replace it.
and replace it.
Clean up the
separation roller and
replace it, and adjust
the pressure and so
on.
separation roller and
replace it, and adjust
the pressure and so
on.
5.
Fan operation failure
Checks
Is the fan load normal?
Is the power voltage
supplied to the motor
connector? Is the connector
connected properly?
supplied to the motor
connector? Is the connector
connected properly?
Is the power supplied to the
CN8_1pin?
CN8_1pin?
Cause
Fan load
Connector
Power supply
Fan motor
Step
1
2
3
Yes/No
No
No
No
Yes
Action
Remove the
extraneous materials.
extraneous materials.
Check the connector
and connect it
properly.
and connect it
properly.
Check the PC board
and replace it.
and replace it.
Check the fan motor
and replace it.
and replace it.
8-50
CHAPTER 8 TROUBLESHOOTING
4.
Size detection failure
Checks
Does the paper length
sensor (TP48) become +5V
when there are papers?
sensor (TP48) become +5V
when there are papers?
Does the separation sensor
(TP50) become +5V when
there are papers?
(TP50) become +5V when
there are papers?
Does the output (TP47) of the
paper width detection volume
become more than +4V with the
guide broadened and less than
+2.5V with the guide narrowed?
paper width detection volume
become more than +4V with the
guide broadened and less than
+2.5V with the guide narrowed?
Are the separation roller and
paper not slipping?
paper not slipping?
Cause
Paper length sensor
Separation sensor
Paper width detection
Separation roller
Step
1
2
3
4
Yes/No
No
No
No
No
Yes
Action
Check the paper
length sensor and
replace it.
length sensor and
replace it.
Check the separation
sensor and replace it.
sensor and replace it.
Check the paper
width detection
volume and replace
it.
width detection
volume and replace
it.
Check the PC board
and replace it.
and replace it.
Clean up the
separation roller and
replace it, and adjust
the pressure and so
on.
separation roller and
replace it, and adjust
the pressure and so
on.
5.
Fan operation failure
Checks
Is the fan load normal?
Is the power voltage
supplied to the motor
connector? Is the connector
connected properly?
supplied to the motor
connector? Is the connector
connected properly?
Is the power supplied to the
CN8_1pin?
CN8_1pin?
Cause
Fan load
Connector
Power supply
Fan motor
Step
1
2
3
Yes/No
No
No
No
Yes
Action
Remove the
extraneous materials.
extraneous materials.
Check the connector
and connect it
properly.
and connect it
properly.
Check the PC board
and replace it.
and replace it.
Check the fan motor
and replace it.
and replace it.
