AR-C170 (serv.man28). Troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 9

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AR-C170M  TROUBLESHOOTING  11 - 9
Main 
code
Sub 
code
Title
Saddle finisher punch registration 
sensor trouble
F1
36
Display
Lamp/Message
Phenomenon Detail
Sensor input value 
abnormality
Section
Saddle finisher
Case 1
Cause
Sensor breakage
Check & 
Remedy
Use SIM 3-2 to check the 
sensor operation.
Case 2
Cause
Harness disconnection
Check & 
Remedy
Same as case 1.
Case 3
Cause
Saddle finisher control PWB 
trouble
Check & 
Remedy
Same as Case 1.
Main 
code
Sub 
code
Title
Saddle finisher/sorter backup RAM 
trouble
F1
37
Display
Lamp/Message
Phenomenon Detail
Writing to the backup RAM 
is started but not completed 
in 250msec.
When writing to the backup 
RAM, if the write data do 
not coincide with the read 
data, writing is performed 
again. However, the write 
data still do not coincide 
with the read data.
Section
Saddle finisher/sorter
Case 1
Cause
Saddle finisher control 
PWB, backup RAM trouble
Check & 
Remedy
Replace the saddle finisher 
control PWB.
Case 2
Cause
Saddle finisher control PWB 
trouble
Check & 
Remedy
Same as Case 1.
Case 3
Cause
Sorter control PWB, backup 
RAM trouble
Check & 
Remedy
Replace the sorter control 
PWB, and perform the bin 
paper sensor sensitivity 
adjustment and the guide 
bar motor oscillation range 
adjustment.
Case 4
Cause
Sorter control PWB trouble
Check & 
Remedy
Same as Case 3.
Case 5
Cause
Malfunction caused by 
noises
Check & 
Remedy
Turn off the machine power, 
and turn it on again.
Main 
code
Sub 
code
Title
Saddle finisher punch backup RAM 
trouble
F1
38
Display
Lamp/Message
Phenomenon Detail
Abnormal transformation of 
punch unit backup RAM 
contents
Section
Saddle finisher
Case 1
Cause
Punch control PWB trouble
Check & 
Remedy
Replace the punch control 
PWB.
Case 2
Cause
Malfunction caused by 
noises
Check & 
Remedy
Main 
code
Sub 
code
Title
Saddle finisher punch dust sensor 
trouble
F1
39
Display
Lamp/Message
Phenomenon Detail
Punch dust sensor 
detection trouble
Section
Saddle finisher
Case 1
Cause
Sensor breakage
Check & 
Remedy
Use SIM 3-2 to check the 
sensor operation.
Case 2
Cause
Harness disconnection
Check & 
Remedy
Same as Case 1.
Case  3
Cause
Saddle finisher control PWB 
trouble
Check & 
Remedy
Same as Case 1. 
Main 
code
Sub 
code
Title
Saddle finisher punch power 
disconnection trouble
F1
40
Display
Lamp/Message
Phenomenon Detail
The power disconnection of 
the punch unit is detected.
Section
Saddle finisher
Case 1
Cause
Harness disconnection
Check & 
Remedy
Use SIM 3-3 to check the 
punching operation.
Case 2
Cause
Punch control PWB trouble
Check & 
Remedy
Same as Case 1.
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