Read Sharp AR-F12 (serv.man8) Service Manual online
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.
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