Sharp AR-M450 Service Manual page 142

MAIN SUB
L3 00 Content Scanner return trouble
Details Scanner return is not completed within the
specified time.
Cause Scanner unit abnormality
Scanner wire disconnection
Check & Check scanning with SIM 1-1.
Remedy
L4 01 Content Main motor lock detection
Detail The motor lock signal is detected for 1.5sec
during rotation of the main motor.
Cause main motor trouble
Check connection of harness between the
PCU PWB and the main motor.
Control circuit trouble
Check and Use DIAG (SIM25-1) to check the main
remedy motor operation.
Check harness and connector between the
PCU PWB and the main motor.
02 Content Drum motor lock detection
Detail The motor lock signal is detected for 1.5sec
during rotation of the drum motor.
Cause Drum motor trouble
Improper connection of harness between the
PCU PWB and the drum motor.
Control circuit trouble
Check and Use DIAG (SIM25-1) to check the drum
remedy motor operation.
Check harness and connector between the
PCU PWB and the drum motor.
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 full wave signal frequency
abnormality.
(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.
MAIN SUB
U6 00
01
02
03
10
AR-M350 TROUBLE CODES 11-8
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
Noise or interference
Check and Canceled by turning OFF/ON the power.
remedy Check connection of the harness and
connector in the communication line.
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.
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.