Sharp AR-M550 (serv.man16) Service Manual ▷ View online
AR-M550/M620 SELF DIAG MESSAGE AND TROUBLESHOOTING 9 - 31
Main
code
code
Sub
code
Title
5-time continuous POD not-
reached JAM detection
reached JAM detection
H5
01
Phenomenon
Display
Lamp
Message
Details
5-time continuous POD
not-reached JAM
detection
When POD1 not-reached
jam is detected 5 times
continuously.
POD1 jam counter is
backed up and used in a
print job after turning on
the power.
The counter is cleared
when POD1 jam does not
occur in a job or when the
trouble is canceled.
not-reached JAM
detection
When POD1 not-reached
jam is detected 5 times
continuously.
POD1 jam counter is
backed up and used in a
print job after turning on
the power.
The counter is cleared
when POD1 jam does not
occur in a job or when the
trouble is canceled.
Section
Engine
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
The fusing jam is not
canceled completely.
(Jam paper remains.)
canceled completely.
(Jam paper remains.)
Remedy
Check for jam paper in
the fusing section.
(Winding, etc.)
the fusing section.
(Winding, etc.)
Case 2
Trouble
position/
Cause
position/
Cause
POD1 sensor trouble, or
harness connection
trouble
harness connection
trouble
Remedy
Check the PODC1
sensor harness and
installation of the fusing
unit.
sensor harness and
installation of the fusing
unit.
Case 3
Trouble
position/
Cause
position/
Cause
Fusing unit installation
trouble
trouble
Remedy
Use SIM 14 to cancel the
trouble
trouble
Main
code
code
Sub
code
Title
Scanner feed trouble
L1
00
Phenomenon
Display
Lamp
Message
Message
Details
Scanner feed trouble
Scanner feed is not
completed within the
specified time.
When MHP Soft is not
detected within 2 sec
after shifting the mirror
base unit in the feeding
direction.
Scanner feed is not
completed within the
specified time.
When MHP Soft is not
detected within 2 sec
after shifting the mirror
base unit in the feeding
direction.
Section
Scanner
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Scanner unit trouble
The scanner wire is
disconnected.
The scanner wire is
disconnected.
Remedy
Use SIM 1-1 to check
scanning operation.
scanning operation.
Note
Main
code
code
Sub
code
Title
Scanner return trouble
L3
00
Phenomenon
Display
Lamp
Message
Message
Details
Scanner return trouble
Scanner return is not
completed within the
specified time.
MHPSon is not detected
within 10sec after starting
the mirror base unit in the
return direction.
Scanner return is not
completed within the
specified time.
MHPSon is not detected
within 10sec after starting
the mirror base unit in the
return direction.
Section
Scanner
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Scanner unit trouble
The scanner wire is
disconnected.
The scanner wire is
disconnected.
Remedy
Use SIM 1-1 to check
scanning operation.
scanning operation.
Note
Main
code
code
Sub
code
Title
Main motor lock detection
L4
01
Phenomenon
Display
Lamp
Message
Message
Details
Main motor lock detection
Three successive trouble
signals are detected after
600 msec from starting
the main motor.
No trouble is detected
after 600msec above.
Three successive trouble
signals are detected after
600 msec from starting
the main motor.
No trouble is detected
after 600msec above.
Section
Engine
Operation
mode
Note
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Main motor trouble
Remedy
Use SIM 6-1 to check the
main motor operation.
main motor operation.
Note
Case 2
Trouble
position/
Cause
position/
Cause
Improper disconnection
of the harness between
the PCU PWB and the
main motor
Control circuit trouble
of the harness between
the PCU PWB and the
main motor
Control circuit trouble
Remedy
Check the harness and
the connector between
the PCU PWB and the
main motor.
the connector between
the PCU PWB and the
main motor.
Note
AR-M550/M620 SELF DIAG MESSAGE AND TROUBLESHOOTING 9 - 32
Main
code
code
Sub
code
Title
Drum motor lock detection
L4
02
Phenomenon
Display
Lamp
Message
Message
Details
Drum motor lock
detection
The motor lock signal is
detected for 1.5sec
during rotation of the
drum motor.
detection
The motor lock signal is
detected for 1.5sec
during rotation of the
drum motor.
Section
Engine
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Drum motor trouble
Remedy
Use SIM 6-1 to check the
drum motor operation.
drum motor operation.
Note
Case 2
Trouble
position/
Cause
position/
Cause
Improper connection of
the harness between the
PCU PWB and the drum
motor
Control circuit trouble
the harness between the
PCU PWB and the drum
motor
Control circuit trouble
Remedy
Check the harness and
the connector of the PCU
PWB, and the drum
motor.
the connector of the PCU
PWB, and the drum
motor.
Note
Main
code
code
Sub
code
Title
Fusing motor lock detection
L4
03
Phenomenon
Display
Lamp
Message
Details
Fusing motor lock
detection
Three successive trouble
signals are detected after
600 msec from starting
the fusing motor.
detection
Three successive trouble
signals are detected after
600 msec from starting
the fusing motor.
Section
Engine
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Fusing motor trouble
Remedy
Use SIM 6-1 to check the
fusing motor operation.
fusing motor operation.
Note
Case 2
Trouble
position/
Cause
position/
Cause
Improper connection of
the harness between the
PCU PWB and the fusing
motor
Control circuit trouble
the harness between the
PCU PWB and the fusing
motor
Control circuit trouble
Remedy
Check connection of the
harness and the
connector between the
PCU PWB and the fusing
motor.
harness and the
connector between the
PCU PWB and the fusing
motor.
Note
Main
code
code
Sub
code
Title
Developing motor lock detection
L4
04
Phenomenon
Display
Lamp
Message
Message
Details
Developing motor lock
detection
The motor lock signal is
detected for 1.5sec
during rotation of the
developing motor
detection
The motor lock signal is
detected for 1.5sec
during rotation of the
developing motor
Section
Engine
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Developing motor trouble
Remedy
Use SIM 6-1 to check the
developing motor
operation.
developing motor
operation.
Note
Case 2
Trouble
position/
Cause
position/
Cause
Improper connection of
the harness between the
PCU PWB and the
developing motor
Control circuit trouble
the harness between the
PCU PWB and the
developing motor
Control circuit trouble
Remedy
Check the harness and
the connector between
the PCU PWB and the
developing motor.
the connector between
the PCU PWB and the
developing motor.
Note
Main
code
code
Sub
code
Title
Transfer belt separation motor
trouble detection
trouble detection
L4
06
Phenomenon
Display
Lamp
Message
Message
Details
Transfer belt separation
motor trouble detection
The transfer belt home
position sensor ON/OFF
is not detected within the
specified time (4 sec)
during operation of the
transfer belt (separation,
contact).
motor trouble detection
The transfer belt home
position sensor ON/OFF
is not detected within the
specified time (4 sec)
during operation of the
transfer belt (separation,
contact).
Section
Engine
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Transfer belt separation
motor trouble
motor trouble
Remedy
Use SIM 6-1 to check the
transfer belt motor
operation.
transfer belt motor
operation.
Note
Case 2
Trouble
position/
Cause
position/
Cause
Improper connection of
the harness between the
PCU PWB and the
transfer belt separation
motor.
Control circuit trouble
the harness between the
PCU PWB and the
transfer belt separation
motor.
Control circuit trouble
Remedy
Check connection of the
harness and the
connector between the
PCU PWB and the fusing
motor.
harness and the
connector between the
PCU PWB and the fusing
motor.
Note
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
AR-M550/M620 SELF DIAG MESSAGE AND TROUBLESHOOTING 9 - 34
Main
code
code
Sub
code
Title
RIC copy inhibit command receive
PF
00
Phenomenon
Display
Lamp
Message
Message
Details
The copy inhibit
command is received
from the RIC (host). (By
PPC communication
standards.)
command is received
from the RIC (host). (By
PPC communication
standards.)
Section
Controller
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Judged by the host.
Remedy
Notification to the host
Note
Main
code
code
Sub
code
Title
FAX battery abnormality
U1
01
Phenomenon
Display
Lamp
Message
Details
FAX battery abnormality
FAX backup SRAM
battery voltage fall
FAX backup SRAM
battery voltage fall
Section
FAX
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
Battery life
Remedy
Check that the battery
voltage is about 2.5V or
above.
voltage is about 2.5V or
above.
Note
Case 2
Trouble
position/
Cause
position/
Cause
Battery circuit trouble
Remedy
Check the battery circuit.
Note
Main
code
code
Sub
code
Title
RTC read error (combined use as
FAX, on MFP control PWB)
FAX, on MFP control PWB)
U1
02
Phenomenon
Display
Lamp
Message
Details
RTC read error
(combined use as FAX,
on MFP control PWB)
The read value from the
RTC on the MFP control
PWB is abnormal such as
“EE”h.
(combined use as FAX,
on MFP control PWB)
The read value from the
RTC on the MFP control
PWB is abnormal such as
“EE”h.
Section
Controller
Operation
mode
mode
Note
U1
02
Case 1
Trouble
position/
Cause
position/
Cause
RTC circuit trouble
Remedy
Make the time setup
again with the key
operation and check that
the time advances
normally.
Check the RTC circuit.
again with the key
operation and check that
the time advances
normally.
Check the RTC circuit.
Note
Case 2
Trouble
position/
Cause
position/
Cause
Battery voltage fall
Remedy
Check that the battery
voltage is about 2.5V or
above.
voltage is about 2.5V or
above.
Note
Case 3
Trouble
position/
Cause
position/
Cause
Battery circuit trouble
Remedy
Check the battery circuit.
Note
Main
code
code
Sub
code
Title
EEPROM read/write error (MFP
control)
control)
U2
00
Phenomenon
Display
Lamp
Message
Details
EEPROM write error
Section
Controller
Operation
mode
mode
Note
Case 1
Trouble
position/
Cause
position/
Cause
EEPROM trouble
Remedy
Check that the EEPROM
is properly installed.
In the simulation to
prevent against delete of
the counter data/
adjustment values, write
down the counter/
adjustment values.
is properly installed.
In the simulation to
prevent against delete of
the counter data/
adjustment values, write
down the counter/
adjustment values.
Note
Case 2
Trouble
position/
Cause
position/
Cause
Insertion of EEPROM
which is not initialized
which is not initialized
Remedy
Use SIM 16 to cancel the
U2 trouble.
U2 trouble.
Note
Case 3
Trouble
position/
Cause
position/
Cause
MFP control PWB
EEPROM access circuit
trouble
EEPROM access circuit
trouble
Remedy
Replace the MFP control
PWB.
PWB.
Note
Main
code
code
Sub
code
Title
RTC read error (combined use as
FAX, on MFP control PWB)
FAX, on MFP control PWB)
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