AR-C170 (serv.man28). Troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 28

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AR-C170M  TROUBLESHOOTING  11 - 28
U6
20
Case 1
Cause
Improper connection or 
disconnection of the 
connector and the harness.
Check & 
Remedy
Check the connector and 
the harness in the 
communication line.
Case 2
Cause
LCC control PWB trouble
Check & 
Remedy
Replace the LCC control 
PWB.
Case 3
Cause
Control PWB (PCU) trouble
Check & 
Remedy
Replace the control PWB 
(PCU).
Case 4
Cause
Malfunction caused by 
noises
Check & 
Remedy
Turn OFF/ON the power to 
cancel the error.
Main 
code
Sub 
code
Title
LCC transport motor trouble
U6
21
Display
Lamp/Message
Phenomenon Detail
• The encoder input value 
does not change in 
0.06sec after turning on 
the motor.
• The encoder input 
changes after the speci-
fied time from turning off 
the motor. (100 or more 
counts are made in 
0.1sec after 5sec.)
Section
Case 1
Cause
Motor lock, motor RPM 
abnormality. Over current to 
the motor, saddle finisher 
control PWB trouble
Check & 
Remedy
Use SIM 4-3 to check the 
transport motor operation.
Main 
code
Sub 
code
Title
LCC 24V power abnormality
U6
22
Display
Lamp/Message
Phenomenon Detail
DC 24V is not supplied to 
the LCC.
Section
Case 1
Cause
Improper connection or 
disconnection of the 
connector and the harness.
Check & 
Remedy
Check the connector and 
the harness in the power 
line.
Turn OFF/ON the power to 
cancel the error.
Case 2
Cause
LCC control PWB trouble
Check & 
Remedy
Turn OFF/ON the power to 
cancel the error.
Case 3
Cause
Power supply unit trouble
Check & 
Remedy
Turn OFF/ON the power to 
cancel the error.
Main 
code
Sub 
code
Title
LCC communication trouble
Main 
code
Sub 
code
Title
Desk incompatibility trouble
U6
50
Display
Lamp/Message
Phenomenon Detail
Connection of a desk which 
is not compatible with the 
AR-C170M is detected.
Section
Desk
Case 1
Cause
Connection of a desk (AR-
D17/AR-D18/AR-D19) 
which is not compatible with 
the AR-C170M is detected.
Check & 
Remedy
Connect the AR-D18N/AR-
D19N.
Main 
code
Sub 
code
Title
LCC incompatibility trouble
U6
51
Display
Lamp/Message
Phenomenon Detail
Connection of LCC which is 
not compatible with the AR-
C170M is detected.
Section
LCC
Case 1
Cause
Connection of the AR-LC5 
which is not compatible with 
the AR-C170M is detected.
Check & 
Remedy
Connect the AR-LC8.
Main 
code
Sub 
code
Title
RIC communication trouble
U7
00
Display
Lamp/Message
Phenomenon Detail
RIC communication error, 
communication test error 
when turning on the power 
or after canceling the 
exclusive simulation.
Section
RIC
Case 1
Cause
Improper connection or 
disconnection of the 
connector and the harness.
RIC control PWB trouble, 
control PWB (PCU) trouble, 
malfunction caused by 
noises.
Check & 
Remedy
Turn OFF/ON the power to 
cancel the error.
Check the connector and 
the harness in the 
communication line.
Main 
code
Sub 
code
Title
CPT-ASIC trouble (MFP PWB 
trouble)
UC
02
Display
Lamp/Message
Phenomenon Detail
Access abnormality to CPT-
ASIC (ASIC does not 
operate normally.)
Section
MFP PWB
Case 1
Cause
CPT-ASIC abnormality
MFP PWB abnormality
Check & 
Remedy
Turn OFF/ON repeatedly. If 
the trouble is not canceled, 
replace the MFP PWB.
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