Sharp AR-405 (serv.man13) Service Manual ▷ View online
Trouble code
Description
Main
code
code
Sub
code
H3
00…HL1
01…HL2
01…HL2
Content Too hot fusing section
Detail
Detail
The fusing temperature is over 241.5˚C
(less than 1.3-V input voltage is
detected.)
(less than 1.3-V input voltage is
detected.)
Cause
Thermister defective
Control PWB defective
Improper connection of fusing unit
connector
AC power supply defective
Control PWB defective
Improper connection of fusing unit
connector
AC power supply defective
Check
and
remedy
and
remedy
Check heater lamp operation with
SIM5-2.
If lamp blinks properly:
Check thermister and its harness.
Check thermister input circuit of
control PWB.
If lamp lights and stays lit:
Check lamp control circuits of AC
PWB and control PWB.
Clear the trouble with SIM14.
SIM5-2.
If lamp blinks properly:
Check thermister and its harness.
Check thermister input circuit of
control PWB.
If lamp lights and stays lit:
Check lamp control circuits of AC
PWB and control PWB.
Clear the trouble with SIM14.
H4
00…HL1
01…HL2
01…HL2
Content Too cold fusing section
Detail
Detail
The temperature does not reach the
preset value within the specified time (3
min. in usual modes; 5 min. in curl
correction mode.) after the power relay
is turned on.
preset value within the specified time (3
min. in usual modes; 5 min. in curl
correction mode.) after the power relay
is turned on.
Cause
Thermister defective
Heater lamp defective
Control PWB defective
Thermostat defective
AC power supply defective
Interlock switch defective
Heater lamp defective
Control PWB defective
Thermostat defective
AC power supply defective
Interlock switch defective
Check
and
remedy
and
remedy
Check heater lamp for blinking with
SIM5-2.
If lamp blinks properly:
Check thermister and its harness.
Check thermister input circuit of
control PWB.
If lamp does not light:
Check heater lamp for broken wire
and thermostat for operation.
Check interlock switch.
Check lamp control circuit of AC PWB
and control PWB.
Clear the trouble with SIM14.
SIM5-2.
If lamp blinks properly:
Check thermister and its harness.
Check thermister input circuit of
control PWB.
If lamp does not light:
Check heater lamp for broken wire
and thermostat for operation.
Check interlock switch.
Check lamp control circuit of AC PWB
and control PWB.
Clear the trouble with SIM14.
H5
01
Content 5 continuous POD1 not-reaching JAM
detection
Detail
5 continuous POD1 not-reaching JAM
detection
detection
Cause
Check that the fusing JAM is completely
cancelled. (Jam paper may be
remained.)
POD1 sensor trouble or improper
harness connection
Improper installation of the fusing
harness.
cancelled. (Jam paper may be
remained.)
POD1 sensor trouble or improper
harness connection
Improper installation of the fusing
harness.
Check
and
remedy
and
remedy
Check JAM paper in the fusing section.
(Winding, etc.)
Check POD1 sensor harness. Check the
fusing unit installation.
Cancel the trouble with SIM 14.
(Winding, etc.)
Check POD1 sensor harness. Check the
fusing unit installation.
Cancel the trouble with SIM 14.
02
Content Fusing thermistor abnormality
Detail
Detail
Fusing thermistor temperature transient
abnormality (Paper winding)
abnormality (Paper winding)
Cause
Paper winding to fusing roller
Fusing pawl abnormality
Fusing unit installation abnormality
Fusing pawl abnormality
Fusing unit installation abnormality
Check
and
remedy
and
remedy
Check for jam (winding) paper in the
fusing section.
Check for installation of the fusing unit.
Check the fusing pawl.
Cancel the trouble with SIM 14.
fusing section.
Check for installation of the fusing unit.
Check the fusing pawl.
Cancel the trouble with SIM 14.
Trouble code
Description
Main
code
code
Sub
code
L1
00
Content Scanner field trouble
Detail
Detail
Scanner field is not finished within the
specified time. (timer is change by
magnification)
specified time. (timer is change by
magnification)
Cause
Mirror unit defective
Scanner wire disconnected
Scanner wire disconnected
Check
and
remedy
and
remedy
Check scanning operation with SIM1-1.
L3
00
Content Scanner return trouble
Detail
Detail
Scanner return is not finished within the
specified time. (timer is change by
magnification)
specified time. (timer is change by
magnification)
Cause
Mirror unit defective
Scanner wire disconnected
Scanner wire disconnected
Check
and
remedy
and
remedy
Check scanning operation with SIM1-1.
L4
01
Content Main motor lock detected
Detail
Detail
Motor lock signal is detected for 1.5
seconds during main motor rotation
seconds during main motor rotation
Cause
Main motor defective
Improper connection of harness
between PCU PWB and main motor
Control circuit defective
Improper connection of harness
between PCU PWB and main motor
Control circuit defective
Check
and
remedy
and
remedy
Check main motor operation with
SIM25-1.
Check harness and connector between
PCU PWB and main motor.
SIM25-1.
Check harness and connector between
PCU PWB and main motor.
L6
10
Content Polygon motor lock detected
Detail
Detail
It was judged that there is no output of
polygon motor lock signal of LSU.
The lock signal was checked at about
10-second intervals after the polygon
motor started rotating. As result, it was
judged that the polygon motor failed to
operate normally.
polygon motor lock signal of LSU.
The lock signal was checked at about
10-second intervals after the polygon
motor started rotating. As result, it was
judged that the polygon motor failed to
operate normally.
Cause
Disconnected connecter to LSU or
detached harness inside LSU or broken
wire.
Polygon motor defective
detached harness inside LSU or broken
wire.
Polygon motor defective
Check
and
remedy
and
remedy
Check polygon motor operation with
SIM61-1.
Check harness and connector for
connection. Replace LSU if needed.
SIM61-1.
Check harness and connector for
connection. Replace LSU if needed.
L8
01
Content No full-wave signal
Detail
Detail
Full-wave signal is not detected.
Cause
PCU PWB trouble
Power unit trouble
Power unit trouble
Check
and
remedy
and
remedy
Check connection of the harness and
the connector.
Replace the PCU PWB.
Replace the power unit.
the connector.
Replace the PCU PWB.
Replace the power unit.
02
Content Full-wave signal abnormality
Detai
Detai
Full-wave signal frequency abnormality
detected.
(The detected frequency: 69Hz or above
or 42.5Hz or below)
detected.
(The detected frequency: 69Hz or above
or 42.5Hz or below)
Cause
Check for disconnection or improper
connection of the connector of the PCU
PWB and the power PWB harness.
PCU PWB trouble
Power unit trouble
connection of the connector of the PCU
PWB and the power PWB harness.
PCU PWB trouble
Power unit trouble
Check
and
remedy
and
remedy
Check connection of the harness and
connector.
Replace the power unit.
connector.
Replace the power unit.
AR-405
1/21/1999
11 – 6
Trouble code
Description
Main
code
code
Sub
code
U2
00
Content EEPROM read/write error
Detail
Detail
EEPROM version error. Error in writing
into EEPROM.
into EEPROM.
Cause
EEPROM defective
Uninitialized EEPROM is installed
Defective EEPROM access circuit on
PCU PWB
Uninitialized EEPROM is installed
Defective EEPROM access circuit on
PCU PWB
Check
and
remedy
and
remedy
Check EEPROM for proper set-up
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
11
Content Counter checksum error
Detail
Detail
Checksum error in counter data area
Cause
EEPROM defective
Control circuit hung up due to noise
Defective EEPROM access circuit on
PCU PWB
Control circuit hung up due to noise
Defective EEPROM access circuit on
PCU PWB
Check
and
remedy
and
remedy
Check EEPROM for proper set-up
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
12
Content Adjustment value checksum error
Detail
Detail
Checksum error in adjustment value
data area
data area
Cause
EEPROM defective
Control circuit hung up due to noise.
Defective EEPROM access circuit on
PCU PWB
Control circuit hung up due to noise.
Defective EEPROM access circuit on
PCU PWB
Check
and
remedy
and
remedy
Check EEPROM for proper set-up
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
U4
02
Content ADU alignment plate operation error
Detail
Detail
The plate won’t move from home
position more than 1 second after
sending the command to leave home
position. Or the plate won’t return to
home position within 5 seconds after
sending the command to return to home
position.
position more than 1 second after
sending the command to leave home
position. Or the plate won’t return to
home position within 5 seconds after
sending the command to return to home
position.
Cause
Home position sensor defective
Alignment shift motor defective
Improper connection of harness
between PCU PWB, motor and sensor.
Control PWB (PCU) defective
Alignment plate driving belt or gear
damaged or improperly adjusted
Alignment shift motor defective
Improper connection of harness
between PCU PWB, motor and sensor.
Control PWB (PCU) defective
Alignment plate driving belt or gear
damaged or improperly adjusted
Check
and
remedy
and
remedy
Check home position sensor detection
with SIM9-2.
Check alignment plate operation with
SIM9-4.
Check connection between PCU, motor
and sensor.
Remove ADU and check gear and belt
for damage.
with SIM9-2.
Check alignment plate operation with
SIM9-4.
Check connection between PCU, motor
and sensor.
Remove ADU and check gear and belt
for damage.
Trouble code
Description
Main
code
code
Sub
code
U4
03
Content ADU rear edge plate operation
abnormality
Detail
When the plate is not shifted from the
home position for 1 sec or more or when
returning to the home position is not
detected for 5 sec or more.
home position for 1 sec or more or when
returning to the home position is not
detected for 5 sec or more.
Cause
Home position sensor defect
Rear edge plate shift motor defect
Control PWB (PCU) defect
Rear edge plate operation belt/gear
damage or adjustment error
Rear edge plate shift motor defect
Control PWB (PCU) defect
Rear edge plate operation belt/gear
damage or adjustment error
Check
and
remedy
and
remedy
Check the home position sensor
operation with SIM 9-21.
Check the rear edge plate operation with
SIM 9-31.
Check between the PCU PWB, the
motor, and the sensor.
Remove the ADU and check the gear
and the belt.
operation with SIM 9-21.
Check the rear edge plate operation with
SIM 9-31.
Check between the PCU PWB, the
motor, and the sensor.
Remove the ADU and check the gear
and the belt.
03
Content ADU rear plate operation abnormality
Detail
Detail
The ADU rear plate is not shifted from
the home position for more than 1 sec,
or returning to the home position is not
detected for 5 sec when the plate is
returned to the home position.
the home position for more than 1 sec,
or returning to the home position is not
detected for 5 sec when the plate is
returned to the home position.
Cause
Home position sensor abnormality
Rear plate shift motor abnormality
Control PWB (PCU) abnormality
Rear plate belt, gear breakage or
improper adjustment
Rear plate shift motor abnormality
Control PWB (PCU) abnormality
Rear plate belt, gear breakage or
improper adjustment
Check
and
remedy
and
remedy
Check the operation of the home
position sensor with SIM 9-2.
Check the rear plate operation with SIM
9-3.
Check between the PCU PWB, the
motor, and the sensor.
Remove the ADU and check the gear
and the belt for breakage.
position sensor with SIM 9-2.
Check the rear plate operation with SIM
9-3.
Check between the PCU PWB, the
motor, and the sensor.
Remove the ADU and check the gear
and the belt for breakage.
U5
00
Content RADF/SPF communication trouble
Detail
Detail
Communication line test error occurs
when power is turned on or after the exit
of a simulation mode.
Improper communication with RADF
when power is turned on or after the exit
of a simulation mode.
Improper communication with RADF
Cause
Improper connection or broken wire of
connector or harness
RADF control PWB defective
Control PWB (PCU) defective
Malfunction due to noise
connector or harness
RADF control PWB defective
Control PWB (PCU) defective
Malfunction due to noise
Check
and
remedy
and
remedy
Check communication line connector
and harness.
Clear the trouble by turning power
supply On/Off.
and harness.
Clear the trouble by turning power
supply On/Off.
01
Content RADF resist sensor defective
Detail
Detail
RADF resist sensor detection trouble
Cause
Sensor defective
Improper connection of sensor harness
inside RADF.
RADF control PWB defective
Improper connection of sensor harness
inside RADF.
RADF control PWB defective
Check
and
remedy
and
remedy
Check resist sensor detection with
SIM2-2.
Check sensor harness inside RADF.
SIM2-2.
Check sensor harness inside RADF.
AR-405
11 – 7
1/21/1999
Trouble code
Description
Main
code
code
Sub
code
U5
02
Content RADF eject/inversion sensor defective
Detail
Detail
RADF eject/inversion sensor detection
trouble
trouble
Cause
Defective sensor
Improper connection of sensor harness
inside RADF.
RADF control PWB defective
Improper connection of sensor harness
inside RADF.
RADF control PWB defective
Check
and
remedy
and
remedy
Check eject/inversion sensor detection
with SIM2-2.
Check sensor harness inside RADF.
with SIM2-2.
Check sensor harness inside RADF.
03
Content RADF timing sensor defective
Detail
Detail
RADF timing sensor detection trouble
Cause
Defective sensor
Improper connection of sensor harness
inside RADF
RADF control PWB defective
Improper connection of sensor harness
inside RADF
RADF control PWB defective
Check
and
remedy
and
remedy
Check timing sensor detection with
SIM2-2.
Check sensor harness inside RADF.
SIM2-2.
Check sensor harness inside RADF.
11
Content Paper feed motor operation error
Detail
Detail
Paper feed motor driving error
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 paper feed motor operation with
SIM2-3,4.
SIM2-3,4.
U6
00
Content Desk communication trouble
Detail
Detail
Failed communication with desk
Communication line test error occurs
when power is turned on or after the exit
of a simulation mode.
Communication line test error occurs
when power is turned on or after the exit
of a simulation mode.
Cause
Improper connection or broken wire of
connector or harness
Desk control PWB defective
Control PWB (PCU) defective
Malfunction due to noise.
connector or harness
Desk control PWB defective
Control PWB (PCU) defective
Malfunction due to noise.
Check
and
remedy
and
remedy
Clear the trouble by turning the power
supply On/Off.
Check communication line connector
and harness.
supply On/Off.
Check communication line connector
and harness.
01
∼
02
Content Desk 1, 2 CS lift-up trouble
Detail
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
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.
Trouble code
Description
Main
code
code
Sub
code
U6
09
Content LCC lift motor trouble
Detail
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
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
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
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.
22
Content LCC 24V power abnormality
Detail
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.
50
Content Non-support trouble in automatic
detection of option connection (Desk
unit)
unit)
Detail
In automatic detection of option
connection, a non-support desk unit is
detected.
connection, a non-support desk unit is
detected.
Cause
A non-support desk unit is connected to
the copier.
the copier.
Check
and
remedy
and
remedy
Check the desk unit.
AR-405
1/21/1999
11 – 8
Trouble code
Description
Main
code
code
Sub
code
U6
51
Content Non-support trouble in automatic
detection of option connection (LCC unit)
Detail
In automatic detection of option
connection, a non-support LCC unit is
detected.
connection, a non-support LCC unit is
detected.
Cause
A non-support LCC unit is connected to
the copier.
the copier.
Check
and
remedy
and
remedy
Check the LCC unit.
U7
00
Content RIC communication trouble
Detail
Detail
Communication error with RIC
Error in communication line test after
turning on the power or exiting from SIM.
Error in communication line test after
turning on the power or exiting from SIM.
Cause
Improper connection or disconnection of
connector and harness
RIC control PWB trouble
Control PWB (ICU) trouble
Malfunction caused by noises
connector and harness
RIC control PWB trouble
Control PWB (ICU) trouble
Malfunction caused by noises
Check
and
remedy
and
remedy
Turn off/on the power to cancel the
trouble.
trouble.
U9
00
Content U9–
**
: ICU-OPE communication
trouble (ICU detection)
Detail
Communication setup error,
framing/parity/protocol error
framing/parity/protocol error
Cause
Slave unit PWB connector improper
connection
Slave unit PWB – ICU PWB harness
trouble
Connector pin breakage of the motor
PWB of the slave unit PWB
Slave unit ROM trouble. no ROM, ROM
reverse insertion, ROM pin breakage
connection
Slave unit PWB – ICU PWB harness
trouble
Connector pin breakage of the motor
PWB of the slave unit PWB
Slave unit ROM trouble. no ROM, ROM
reverse insertion, ROM pin breakage
Check
and
remedy
and
remedy
Connect the connector of the slave unit
PWB and the ICU PWB.
Check the connection and the harness.
Check the grounding of the copier.
Check the ROM of the slave unit PWB.
PWB and the ICU PWB.
Check the connection and the harness.
Check the grounding of the copier.
Check the ROM of the slave unit PWB.
90
Content U9–
**
: ICU-OPE communication
trouble (OPE detection)
Detail
Communication setup
error/framing/parity/protocol error
error/framing/parity/protocol error
Cause
Slave unit PWB connector improper
connection
Slave unit PWB – ICU PWB harness
trouble
Slave unit PWB mother board connector
pin breakage
connection
Slave unit PWB – ICU PWB harness
trouble
Slave unit PWB mother board connector
pin breakage
Check
and
remedy
and
remedy
Check the slave unit PWB and the ICU
PWB connector connection.
Check the copier earth.
PWB connector connection.
Check the copier earth.
Trouble code
Description
Main
code
code
Sub
code
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.
FC
00
Content ASK/IrDA modulation LSI reset error
Detail
Detail
Though the RESET signal pulse is sent
to the ASK/IrDA modulation LSI, the
power signal is not turned ON.
to the ASK/IrDA modulation LSI, the
power signal is not turned ON.
Cause
1) ICU main PWB defect
2) ASK/IrDA modulation LSI/Clock
oscillator defect
2) ASK/IrDA modulation LSI/Clock
oscillator defect
Check
and
remedy
and
remedy
Perform the self diag with SIM 68-01.
Replace the ICU main PWB.
Replace the ICU main PWB.
01
Content ASK/IrDA switch error
Detail
Detail
Though the ASK/IrDA switch command
is sent to the ASK/IrDA modulation LSI,
the AI signal is not changed.
is sent to the ASK/IrDA modulation LSI,
the AI signal is not changed.
Cause
1) ICU main PWB defect
2) ASK/IrDA modulation LSI/Clock
oscillator defect
2) ASK/IrDA modulation LSI/Clock
oscillator defect
Check
and
remedy
and
remedy
Perform the self diag with SIM 68-01.
Replace the ICU main PWB.
Replace the ICU main PWB.
PF
00
Content RIC copy inhibition signal received
Detail
Detail
Copy inhibition command received from
RIC (host)
RIC (host)
Cause
Judged by the host.
Check
and
remedy
and
remedy
Notice to the host
FA
01
Content A2 board self diag error (memory error)
Detail
Detail
The memory error notice is received
from the A2 board.
from the A2 board.
Cause
A memory error occurred on the A2
board.
board.
Check
and
remedy
and
remedy
Check the details of the error with SIM
69-02. Replace the A2 board.
69-02. Replace the A2 board.
AR-405
11 – 9
1/21/1999
Click on the first or last page to see other AR-405 (serv.man13) service manuals if exist.