Sharp AR-M350N Service Manual page 189

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L6 10 Content Polygon motor lock detection
Detail It is judged that the polygon motor lock signal
is not outputted.
Lock signal is checked in the interval of
10sec after starting the polygon motor, and it
is judged that the polygon motor does not
rotate normally.
Cause The LSU connector or harness in the LSU is
disconnected or broken.
Polygon motor trouble
Check and Use DIAG (SIM61-1) to check the polygon
remedy motor operation.
Check connector and harness connection.
Replace LSU.
L8 01 Content No fullwave signal
Detail Full wave signal is not detected.
Cause The PCU PWB connector or the power unit
harness is disconnected or broken.
PCU PWB trouble
Power unit trouble
Check and Check connection of the harness and
remedy connector.
Replace PCU PWB.
Replace the power unit.
02 Content Full wave signal width abnormality
Detail It is judged as frequency abnormality of full
wave signal.
(When the detection cycle is judged as 69Hz
or above or 42.5Hz or below)
Cause The connector or harness of the PCU PWB
and the power PWB is disconnected.
PCU PWB trouble
Power unit trouble
Check and Check connection of the harness and
remedy connector.
Replace the PCU PWB.
Replace the power unit.
U6 00 Content Desk/LCC communication trouble
Detail Desk/LCC communication error
Communication cable test error after turning
on the power or exiting DIAG.
Cause Improper connection or disconnection of
connector and harness
Desk control PWB trouble
Control PWB (PCU) trouble
Malfunction by noise
Check and Canceled by turning OFF/ON the power.
remedy Check connection of the harness and
connector in the communication line.
01 Content Desk/LCC No. 1 tray lift-up trouble
Detail Desk/LCC No. 1 tray lift-up trouble
Cause Sensor trouble
Desk control PWB trouble
Gear breakage
Lift-up motor trouble
Check and Use DIAG (SIM4-2) to check the lift-up
remedy sensor detection.
Use DIAG (SIM4-3) to check the lift-up motor
operation.
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U6 02
03
10
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EU
F9 02
03
AR-P350 TROUBLE CODES-6
Content Desk No. 2 tray/LCC1 lift-up trouble
Detail Desk No. 2 tray/LCC lift-up trouble
Cause Sensor trouble
Desk control PWB trouble
Gear breakage
Lift-up motor trouble
Check and Use DIAG (SIM4-2) to check the lift-up
remedy sensor detection.
Use DIAG (SIM4-3) to check the lift-up motor
operation.
Content Desk No. 3 tray/LCC2 lift-up trouble
Detail Desk no. 3 tray lift-up trouble
Cause Sensor trouble
Desk control PWB trouble
Gear breakage
Lift-up motor trouble
Check and Use DIAG (SIM4-2) to check the lift-up
remedy sensor detection.
Use DIAG (SIM4-3) to check the lift-up motor
operation.
Content Desk/LCC transport motor trouble
Detail Desk/LCC transport motor operation trouble
Cause Motor lock
Motor rpm abnormality
Overcurrent to the motor
Desk control PWB trouble
Check and Use DIAG (SIM4-3) to check the transport
remedy motor operation.
Content Auto developer adjustment trouble
(Over-toner)
Detail The sample data is of 68 or below when auto
developer adjustment is performed.
Cause Toner concentration sensor trouble
Charging voltage, developing voltage
abnormality
Insufficient toner concentration
Developing unit trouble
PCU PWB trouble
Check and Use DIAG (SIM25-2) to perform auto
remedy developer adjustment.
Content Auto developer adjustment trouble
(Under-toner)
Detail The sample data is of 168 or above when
auto developer adjustment is performed.
Cause Insufficient toner concentration
Charging voltage, developing voltage
abnormality
Insufficient toner concentration
Developing unit trouble
PCU PWB trouble
Check and Use DIAG (SIM25-2) to perform auto
remedy developer adjustment.
Content PRT Centro port check error
Detail Controller Centro port trouble
Cause Centro port trouble
Controller PWB trouble
Check and Replace the Controller PWB.
remedy
Content NIC port check error
Detail NIC port check error
Cause NIC port trouble
NIC PWB trouble
Controller PWB trouble
Check and Replace the NIC PWB.
remedy Replace the Controller PWB.