Read Sharp AR-280 (serv.man15) Service Manual online
Trouble code
Description
Main
code
code
Sub
code
U6
01
∼
02
Content Desk 1, 2 CS lift-up trouble
Detail
Desk cassette lift-up trouble (1st - 3rd
cassettes).
cassettes).
Cause
Defective sensor
RADF control PWB defective
Broken gear
Lift-up motor defective
RADF control PWB defective
Broken gear
Lift-up motor defective
Check
and
remedy
and
remedy
Check lift-up sensor detection with
SIM4-2.
Check lift-up motor with SIM4-3.
SIM4-2.
Check lift-up motor with SIM4-3.
08
Content Desk 24-V power supply error
Detail
No supply of DC24V to desk
Cause
Improper connection or broken wire of
connector or harness
Desk control PWB defective
Power supply unit defective
connector or harness
Desk control PWB defective
Power supply unit defective
Check
and
remedy
and
remedy
Check power supply line connector and
harness.
Check 24-V voltage on power supply unit
and desk control PWB.
harness.
Check 24-V voltage on power supply unit
and desk control PWB.
09
Content LCC lift motor trouble
Detail
LCC lift motor trouble
Cause
Sensor trouble
LCC control PWB trouble
Gear breakage
Lift motor trouble
LCC control PWB trouble
Gear breakage
Lift motor trouble
Check
and
remedy
and
remedy
Check the sensor detection with SIM 4-2.
Check the lift motor operation with SIM
4-3.
Check the lift motor operation with SIM
4-3.
10
Content Desk transport motor trouble
Detail
Desk transport motor operation trouble
Cause
Motor lock
Improper motor speed
Overcurrent to motor
RADF control PWB defective
Improper motor speed
Overcurrent to motor
RADF control PWB defective
Check
and
remedy
and
remedy
Check transport motor operation with
SIM4-6.
SIM4-6.
20
Content LCC communication trouble
Detail
LCC communication trouble
Error when power is turned on or in
communication line test after exiting SIM.
Error when power is turned on or in
communication line test after exiting SIM.
Cause
Connector harness improper connection
or disconnection
LCC control PWB trouble
Control PWB (PCU) trouble
Malfunction by noise
or disconnection
LCC control PWB trouble
Control PWB (PCU) trouble
Malfunction by noise
Check
and
remedy
and
remedy
Canceled by turning on the power.
Check the connector and harness of the
communication line.
Check the connector and harness of the
communication line.
21
Content LCC transport motor trouble
Detail
LCC transport motor operation trouble
Cause
Motor lock
Motor rpm abnormality
Motor overcurrent
LCC control PWB trouble
Motor rpm abnormality
Motor overcurrent
LCC control PWB trouble
Check
and
remedy
and
remedy
Check the transport motor operation with
SIM 4-3.
SIM 4-3.
Trouble code
Description
Main
code
code
Sub
code
U6
22
Content LCC 24V power abnormality
Detail
DC24V not supplied to LCC
Cause
Connector harness improper connection
or disconnection
LCC control PWB trouble
Power unit trouble
or disconnection
LCC control PWB trouble
Power unit trouble
Check
and
remedy
and
remedy
Check the connector and harness of
power line.
Check 24V power in the power unit and
the LCC control PWB.
power line.
Check 24V power in the power unit and
the LCC control PWB.
U7
00
Content RIC communication trouble
Detail
RIC communication error
Error when the power is turned on or in
communication test after exiting from
SIM.
Error when the power is turned on or in
communication test after exiting from
SIM.
Cause
Connector harness improper connection
or disconnection
RIC control PWB (ICU) trouble
Malfunction by noise
or disconnection
RIC control PWB (ICU) trouble
Malfunction by noise
Check
and
remedy
and
remedy
Canceled by turning on the power.
Check the connector and harness of the
power line.
Check the connector and harness of the
power line.
PF
00
Content RIC copy inhibition signal received
Detail
Copy inhibition command received from
RIC (host)
RIC (host)
Cause
Judged by the host.
Check
and
remedy
and
remedy
Notice to the host
EE
EL
Content Auto developing tone adjustment trouble
(overtoner error)
Detail
A sample data is less than 0 when auto
developing adjustment is executed.
developing adjustment is executed.
Cause
Toner density sensor defective
Charging voltage or developing voltage
improper.
Toner density improper
Developing unit defective
PCU PWB defective
Charging voltage or developing voltage
improper.
Toner density improper
Developing unit defective
PCU PWB defective
Check
and
remedy
and
remedy
Make auto developing adjustment with
SIM25-2.
SIM25-2.
EU
Content Auto developing adjustment trouble
(undertoner error)
Detail
A sample data is less than 99 when auto
developing adjustment is executed.
developing adjustment is executed.
Cause
Toner density sensor defective
Charging voltage or developing voltage
improper
Toner density improper
Unit defective
PCU PWB defective
Charging voltage or developing voltage
improper
Toner density improper
Unit defective
PCU PWB defective
Check
and
remedy
and
remedy
Make auto developing adjustment with
SIM25-2.
SIM25-2.
PF
00
Content RIC copy inhibition signal received
Detail
Copy inhibition command received from
the host (RIC)
the host (RIC)
Cause
Judged by the host
Check
and
remedy
and
remedy
Notice to the host
11 – 7
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