Read Sharp AR-405 (serv.man13) Service Manual online
2. Self diagnostics
Trouble code
Description
Main
code
code
Sub
code
C1
00
Content MC trouble
Detail
Detail
Main charger output error (output
released)
Trouble signal from high-voltage
transformer
released)
Trouble signal from high-voltage
transformer
Cause
Main charger improperly installed
Main charger improperly assembled
High-voltage transformer connector
removed
High-voltage harness removed or wire
broken
Main charger improperly assembled
High-voltage transformer connector
removed
High-voltage harness removed or wire
broken
Check
and
remedy
and
remedy
Check main charger output with SIM8-2.
Check main charger connector for
disconnection.
Replace high-voltage unit.
Check main charger connector for
disconnection.
Replace high-voltage unit.
C2
00
Content TC trouble
Detail
Detail
Transfer charger output error (output
short-circuiting)
Trouble signal from high-voltage
transformer
short-circuiting)
Trouble signal from high-voltage
transformer
Cause
Transfer charger contaminated with
foreign matter
Transfer charger wire broken
High-voltage transformer connector
disconnected
foreign matter
Transfer charger wire broken
High-voltage transformer connector
disconnected
Check
and
remedy
and
remedy
Check transfer charger output with
SIM8-6.
Replace high-voltage unit.
SIM8-6.
Replace high-voltage unit.
E7
00
Content E7–
**
: ICU-PCU 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.
01
Content Image data memory trouble
Detail
Detail
The ICU image data memory (SIMM) is
detected only as 8MB or less.
The SIMM capacity is insufficient for the
model.
detected only as 8MB or less.
The SIMM capacity is insufficient for the
model.
Cause
The ICU PWB SIMM is not installed.
The ICU PWB SIMM does not work
properly.
The ICU PWB SIMM is not installed
properly.
ICU PWB abnormality
The ICU PWB SIMM does not work
properly.
The ICU PWB SIMM is not installed
properly.
ICU PWB abnormality
Check
and
remedy
and
remedy
Check installation of the ICU PWB SIMM.
Check the SIMM capacity with SIM
22-10.
Replace the ICU PWB SIMM.
Check the SIMM capacity with SIM
22-10.
Replace the ICU PWB SIMM.
Trouble code
Description
Main
code
code
Sub
code
E7
02
Content Laser trouble
Detail
Detail
BD signal from LSU kept at OFF or ON
Cause
Connector to LSU or harness inside LSU
disconnected or wire broken
Polygon motor improperly rotating
Laser home position sensor improperly
positioned inside LSU
Laser power supply line does not have
proper voltage
Laser LED improperly lighting
ICU PWB error
disconnected or wire broken
Polygon motor improperly rotating
Laser home position sensor improperly
positioned inside LSU
Laser power supply line does not have
proper voltage
Laser LED improperly lighting
ICU PWB error
Check
and
remedy
and
remedy
Check LSU connector for disconnection.
Check LSU operation with SIM61-1.
Check polygon motor for rotation.
Check laser LED for lighting.
Replace LSU unit.
Replace ICU PWB.
Check LSU operation with SIM61-1.
Check polygon motor for rotation.
Check laser LED for lighting.
Replace LSU unit.
Replace ICU PWB.
03
Content HDD trouble
Detail
Detail
HDD is not recognized in the model with
HDD installed.
HDD installed.
Cause
The HDD is not installed to the ICU
PWB.
The HDD does not work properly in the
ICU PWB.
The HDD is not installed to the ICU
PWB properly.
ICU PWB abnormality
PWB.
The HDD does not work properly in the
ICU PWB.
The HDD is not installed to the ICU
PWB properly.
ICU PWB abnormality
Check
and
remedy
and
remedy
Check installation of the HDD to the ICU
PWB.
Check connection of the HDD harness
to the ICU.
Replace the HDD.
Replace the ICU PWB.
PWB.
Check connection of the HDD harness
to the ICU.
Replace the HDD.
Replace the ICU PWB.
10
Content Shading trouble (black correction)
Detail
Detail
Improper CCD black reading level for
copy lamp going out
copy lamp going out
Cause
Improper installation of flat cable to CCD
unit
CCD unit error
ICU PWB error
unit
CCD unit error
ICU PWB error
Check
and
remedy
and
remedy
Check flat cable to CCD unit for
installation.
Check CCD unit.
Check ICU PWB.
installation.
Check CCD unit.
Check ICU PWB.
11
Content Shading trouble (white correction)
Detail
Detail
Improper CCD white reference plate
reading level for copy lamp lighting
reading level for copy lamp lighting
Cause
Improper installation of flat cable to CCD
unit
Mirror, lens or reference white plate
contaminated
Copy lamp operation error
Improperly installed CCD unit
CCD unit error
ICD PWB error
unit
Mirror, lens or reference white plate
contaminated
Copy lamp operation error
Improperly installed CCD unit
CCD unit error
ICD PWB error
Check
and
remedy
and
remedy
Clean mirror, lens, or reference white
plate.
Check copy lamp for light amount
(SIM5-3) and lighting.
Check CCD unit.
Check ICU PWB.
plate.
Check copy lamp for light amount
(SIM5-3) and lighting.
Check CCD unit.
Check ICU PWB.
AR-405
1/21/1999
11 – 2
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