MX-FNX2 (serv.man11). Section 9 - Self-diagnosis and Trouble Codes . - Sharp Copying Equipment Service Manual (repair manual). Page 6

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MX-FNX2/AR-PN1/MX-RBX1  SELF DIAG MESSAGE AND TROUBLE CODE  9 – 6
l. F1-30, Communication error
m. F1-37, Finisher Unit Back-Up RAM Fault
n. F1-80, Finisher Unit Power Supply Fault
o. F1-81, Feed Motor (FFM) Fault
(2) Punch Unit, option
a. F1-32, Communication Faulty
b. F1-33, Punch Horizontal Registration Motor (FPSM) Fault
Cause/Trouble section
Procedure
Check
Result
Remedy
Finisher controller PCB, Host machine 
DC controller PCB
1
Turn off and then on the host machine. Is the problem 
corrected?
YES
End.
Wiring
2
Is the wiring between the finisher controller PCB and the DC 
controller PCB of the host machine normal?
NO
Correct the wring.
Finisher controller PCB, Host machine 
DC controller PCB
3
Try replacing the finisher controller PCB and the host 
machine DC controller PCB. Is the problem corrected?
YES
End.
Cause/Trouble section
Procedure
Check
Result
Remedy
Finisher controller PCB
1
Turn off and then on the host machine. Is the problem 
corrected?
YES
End.
NO
Replace the finisher controller 
PCB.
Cause/Trouble section
Procedure
Check
Result
Remedy
Finisher controller PCB, Host machine 
DC controller PCB
1
Turn off and then on the host machine. Is the problem 
corrected?
YES
End.
Wiring
2
Is the wiring between the finisher controller PCB and the 
host machine DC controller PCB normal?
NO
Correct the wiring.
Power supply
3
Measure the voltage between CN1-1 (+) and CN1-3 (-)/CN2-
1 (+) and CN2-3 (-) on the finisher controller PCB. Is it 24 
VDC?
YES
Replace the finisher controller 
PCB.
NO
Replace the host machine 
DC controller PCB.
Cause/Trouble section
Procedure
Check
Result
Remedy
Bookbinding roller home position 
sensor (FFRHPD)
1
Check the bookbinding roller home position sensor 
(FFRHPD). 
Is it normal?
NO
Replace the sensor.
Wiring
2
Is the wiring between the finisher controller PCB and the 
feed motor (FFM) normal?
NO
Correct the wiring.
Feed roller
3
Try turning the stack feed roller (upper) shaft by hand. 
Does the stack feed roller (upper) move up/down normally?
NO
Correct the mechanical 
system.
Feed motor (FFM), Finisher controller 
PCB
4
Try replacing the feed motor (FFM). Is the problem 
corrected?
YES
End.
NO
Replace the finisher controller 
PCB.
Cause/Trouble section
Procedure
Check
Result
Remedy
Finisher controller PCB, Punch 
controller PCB
1
Turn off and the on the host machine. Is the problem 
corrected?
YES
End.
Wiring
2
Is the wiring between the finisher controller PCB and the 
punch controller PCB normal?
NO
Correct the wiring.
Power supply
3
Measure the voltage between CN14-5 (+) and CN14-3 (-) on 
the finisher controller PCB. Is it 24 VDC?
NO
Replace the finisher controller 
PCB.
YES
Replace the punch controller 
PCB.
Cause/Trouble section
Procedure
Check
Result
Remedy
Punch horizontal registration home 
position sensor (FPSHPD)
1
Check the punch horizontal registration home position 
sensor (FPSHPD). 
Is the sensor normal?
NO
Replace the sensor.
Wiring
2
Is the wiring between the finisher controller PCB and the 
punch horizontal registration home position sensor 
(FPSHPD) normal?
NO
Correct the wiring.
Horizontal registration mechanism, 
punch horizontal registration motor 
(FPSM)
3
Is there a fault in the horizontal registration mechanism?
YES
Correct the horizontal 
registration mechanism.
NO
Replace the punch horizontal 
registration motor (FPNM).
Punch controller PCB, Finisher 
controller PCB
4
Try replacing the punch controller PCB. Is the problem 
corrected?
YES
End.
NO
Replace the finisher 
controller PCB.
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