Read Sharp AR-M550 (serv.man16) Service Manual online
AR-M550/M620 SELF DIAG MESSAGE AND TROUBLESHOOTING 9 - 33
Main
code
code
Sub
code
Title
Controller fan motor lock detection
L4
30
Phenomenon
Display
Lamp
Message
Message
Details
Controller fan motor lock
detection
The motor lock signal is
detected during rotation
of the controller fan
motor.
The motor lock signal is
detected during rotation
of the HDD fan motor.
detection
The motor lock signal is
detected during rotation
of the controller fan
motor.
The motor lock signal is
detected during rotation
of the HDD fan motor.
Section
Controller
Operation
mode
Note
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Fan motor trouble
Remedy
Use SIM 6-2 to check the
fan motor operation.
fan motor operation.
Note
Case 2
Trouble
position/
Cause
position/
Cause
Improper connection of
the harness between the
controller PWB and the
fan motor.
Control circuit trouble
the harness between the
controller PWB and the
fan motor.
Control circuit trouble
Remedy
Check the harness and
the connector between
the controller PWB and
the fan motor.
the connector between
the controller PWB and
the fan motor.
Note
Main
code
code
Sub
code
Title
Paper discharging fan trouble
L4
31
Phenomenon
Display
Lamp
Message
Details
When a value detected
by the temperature
sensor (TH_EX) in the
paper discharging
reverse unit exceeds a
100°C.
by the temperature
sensor (TH_EX) in the
paper discharging
reverse unit exceeds a
100°C.
Section
Engine
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Fan motor trouble
Remedy
Use SIM 6-2 to check the
fan motor operation.
fan motor operation.
Note
Case 2
Trouble
position/
Cause
position/
Cause
PCU PWB, harness
connection between fan
and motor trouble
PCU circuit trouble
Thermistor (TH_EX)
trouble
connection between fan
and motor trouble
PCU circuit trouble
Thermistor (TH_EX)
trouble
Remedy
Check the PCU PWB, the
harness between fan and
motor, and the connector.
harness between fan and
motor, and the connector.
Note
Main
code
code
Sub
code
Title
Polygon motor lock detection
L6
10
Phenomenon
Display
Lamp
Message
Message
Details
Polygon motor lock
detection
It is judged that the
polygon motor lock signal
of the LSU is not
outputted.
The polygon motor lock
signal is checked in an
interval of 10sec after
starting the polygon
motor, and it is found that
the polygon motor is not
rotating normally.
detection
It is judged that the
polygon motor lock signal
of the LSU is not
outputted.
The polygon motor lock
signal is checked in an
interval of 10sec after
starting the polygon
motor, and it is found that
the polygon motor is not
rotating normally.
Section
Engine
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Polygon motor trouble
Remedy
Use SIM 61-1 to check
the polygon motor
operation.
the polygon motor
operation.
Note
Case 2
Trouble
position/
Cause
position/
Cause
Disconnection or
breakage of the LSU
connector or the harness
in the LSU
breakage of the LSU
connector or the harness
in the LSU
Remedy
Check connection of the
harness and the
connector.
Replace the LSU.
harness and the
connector.
Replace the LSU.
Note
Main
code
code
Sub
code
Title
No full wave signal
L8
01
Phenomenon
Display
Lamp
Message
Message
Details
The full wave signal is not
detected.
detected.
Section
Engine
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Disconnection or
breakage of the PCU
PWB connector or the
harness in the power unit
breakage of the PCU
PWB connector or the
harness in the power unit
Remedy
Check connection of the
harness and the
connector.
harness and the
connector.
Note
Case 2
Trouble
position/
Cause
position/
Cause
PCU PWB trouble
Remedy
Replace the PCU PWB.
Note
Case 3
Trouble
position/
Cause
position/
Cause
12V power source trouble
Remedy
Replace the power unit.
Replace the controller
connection mother board.
Replace the controller
connection mother board.
Note
Click on the first or last page to see other AR-M550 (serv.man16) service manuals if exist.