AR-C260 (serv.man14). (11) Troubleshooting - Sharp Copying Equipment Service Manual (repair manual). Page 25

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AR-C260/C260M  TROUBLESHOOTING  11 - 25
Main 
code
Sub 
code
Title
Desk communication trouble
U6
00
Display
Lamp/Message
Phenomenon
Detail
Desk communication error, 
communication test error 
when turning on the power 
or after canceling the 
exclusive simulation. 
Section
Desk
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.
Turn OFF/ON the power to 
cancel the error. 
Case 2
Cause
Desk control PWB trouble, 
control PWB (PCU) 
trouble, malfunction 
caused by noises
Check & 
Remedy
Turn OFF/ON the power to 
cancel the error. 
Main 
code
Sub 
code
Title
Desk cassette 1 lift-up trouble
U6
01
Display
Lamp/Message
Phenomenon
Detail
DLUD1 does not turn on 
within the specified time. 
Section
Desk
Case 1
Cause
DLUD1 sensor trouble, 
paper feed unit harness 
disconnection
Check & 
Remedy
Check DLUD1 and the 
harness and the connector. 
Case 2
Cause
Cassette 1 lift-up motor 
trouble, desk PWB, lift-up 
unit trouble
Check & 
Remedy
Check the lift-up unit. 
Main 
code
Sub 
code
Title
Desk cassette 2 lift-up trouble
U6
02
Display
Lamp/Message
U6
02
Phenomenon
Detail
DLUD2 does not turn on 
within the specified time. 
Section
Desk
Case 1
Cause
DLUD2 sensor trouble, 
paper feed unit harness 
disconnection
Check & 
Remedy
Check DLUD2 and the 
harness and the 
connector. 
Case 2
Cause
Cassette 2 lift-up motor 
trouble, desk PWB, lift-up 
unit trouble
Check & 
Remedy
Check the lift-up unit. 
Main 
code
Sub 
code
Title
Desk cassette 3 lift-up trouble 
U6
03
Display
Lamp/Message
Phenomenon
Detail
DLUD3 does not turn on 
within the specified time. 
Section
Desk
Case 1
Cause
DLUD3 sensor trouble, 
paper feed unit harness 
disconnection
Check & 
Remedy
Check DLUD3 and the 
harness and the 
connector. 
Case 2
Cause
Cassette 3 lift-up motor 
trouble, desk PWB, lift-up 
unit trouble
Check & 
Remedy
Check the lift-up unit. 
Main 
code
Sub 
code
Title
Desk transport motor trouble
U6
10
Display
Lamp/Message
Phenomenon
Detail
Desk transport motor 
operation trouble
Section
Case 1
Cause
Motor lock, motor RPM 
abnormality, Over current to 
the motor, console finisher 
control PWB trouble
Check & 
Remedy
Use SIM 3-3 to check the 
staple motor operation. 
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
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.
Turn OFF/ON the power to 
cancel the error. 
Case 2
Cause
RIC control PWB trouble, 
control PWB (PCU) 
trouble, malfunction 
caused by noises
Check & 
Remedy
Turn OFF/ON the power to 
cancel the error. 
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