Sharp AR-M450 Service Manual page 137

MAIN SUB
E6 11 Content CSI shading trouble (White correction)
Details The CIS white reference plate scan level is
abnormal when the lamp is on.
Cause Abnormal harness installation to CIS unit
Dirt on the white reference plate.
CIS lighting error
CIS unit installation trouble
CIS unit abnormality
Scanner PWB abnormality
Check & Clean the white reference plate.
Remedy Check CIS light quantity (SIM 5-3) and
lighting.
Check CIS unit harness.
Check scanner PWB.
14 Content CIS communication trouble
Details Communication trouble (clock sync) between
scanner PWB and CIS-ASIC
Cause Abnormal harness installation to CIS unit
CIS unit abnormality
Scanner PWB abnormality
Check & Check CIS unit harness.
Remedy Check CIS unit.
Check scanner PWB.
E7 02 Content Laser trouble
Detail BD signal from LSU is kept OFF, or ON.
Cause The connector of LSU or the harness in LSU
is disconnected or broken.
The polygon motor does not rotate normally.
The laser home position sensor in LSU is
shifted.
The proper voltage is not supplied to the
power line for laser.
Laser emitting diode trouble
PCU PWB trouble
Controller PWB trouble
Check and Check for disconnection of the LSU
remedy connector.
Use DIAG (SIM 61-1) to check LSU
operation.
Check that the polygon motor rotates
normally or not.
Check light emission of laser emitting diode.
Replace the LSU unit.
Replace the PCU PWB.
Replace the Controller PWB.
03 Content HDD trouble
Detail HDD does not operate properly in the
machine with HDD installed.
Cause HDD is not installed properly to the Controller
PWB.
HDD does not operate properly in the
Controller PWB.
Controller PWB trouble
Check and Check installation of HDD to the Controller
remedy PWB.
Check connection of the harness of HDD to
the Controller PWB.
Use DIAG (SIM 62-2, -3) to check read/write
of HDD.
Replace HDD.
Replace Controller PWB.
MAIN SUB
E7 06
10
11
14
50
AR-M350 TROUBLE CODES 11-3
Content Decode error trouble
Detail A decode error occurs during making of an
image.
Cause Data error during input from PCI to PM.
PM trouble
Data error during image compression/
transfer.
Controller PWB abnormality
Check and Check insertion of the PWB. (PCI bus)
remedy If the error occurred in a FAX job, check
installation of the FAX PWB.
For the other cases, check the Controller
PWB.
Replace the Controller PWB.
Content Shading trouble (Black correction)
Details CCD black scan level abnormality when the
copy lamp is off.
Cause Abnormal installation of flat cable to CCD
unit.
CCD unit abnormality
Scanner PWB abnormality
Check & Check installation of CCD unit flat cable.
Remedy Check CCD unit.
Check scanner PWB.
Content Shading trouble (White correction)
Details CCD white reference plate scan level
abnormality when the copy lamp is ON.
Cause Abnormal installation of flat cable to CCD
unit.
Dirt on mirror, lens, white reference plate
Copy lamp lighting abnormality
Abnormal installation of CCD unit
CCD unit abnormality
Scanner PWB abnormality
Check & Clean mirror, lens, and white reference plate.
Remedy Check copy lamp light quantity (SIM 5-3) and
lighting.
Check CCD unit.
Check scanner PWB.
Content CCD communication trouble
Details Communication trouble (clock sync) between
scanner PWB and CCD-ASIC
Cause Abnormal installation of harness to CCD unit
CCD unit abnormality
Scanner PWB abnormality
Check & Check CCD unit harness.
Remedy Check CCD unit.
Check scanner PWB.
Content LSU connection trouble
Detail An LSU which does not conform to the
machine is installed.
Cause PCU PWB trouble
LSU trouble
Check and Check LSU PWB. Check PCU PWB.
remedy Check connection of the connector and the
harness between PCU and LSU.