Sharp AR-M455N Service Manual page 221

MAIN SUB
E7 06 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.
ICU 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 ICU
PWB.
Replace the ICU PWB.
10 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
Remedy cable.
Check CCD unit.
Check scanner PWB.
11 Content Shading trouble (White correction all
pixel adjustment)
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
Remedy plate.
Check copy lamp light quantity (SIM 5-
3) and lighting.
Check CCD unit.
Check scanner PWB.
14 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.
17 Content SPF scanning position adjustment
trouble (Detected only when executing
an adjustment SIM.)
Details The black Mylar which serves as the
reference of the SPF scanning position
is not detected.
Cause Black Mylar installing failure on the
SPF side
Check & Check the SPF black Mylar.
Remedy
Details
AR-M355N/M455N TROUBLE CODES 11 - 4
MAIN SUB
E7 50 Content LSU connection trouble
Detail An LSU which does not conform to the
machine is installed.
Cause LSU connection trouble
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.
60 Content Controller skating trouble
Detail Occurrence of an error in controller
skating check
Cause Discrepancy in the combination of the
controller PWB and the ROM
Check and Check the controller PWB.
remedy Check the combination of the controller
PWB and the ROM.
80 Content Communication trouble (ICU detection)
between ICU and scanner
Details Communication establishment error/
Fleming/Parity/Protocol error
Cause Defective connection of slave unit PWB
connector
Defective harness between slave unit
PWB and ICU PWB
Slave unit PWB mother board
connector pin breakage
Check & Check connector and harness of slave
Remedy unit PWB and ICU PWB.
Check grounding of machine.
90 Content Communication trouble (ICU detection)
between ICU and PCU
Details Communication establishment error/
Fleming/Parity/Protocol error
Cause Defective connection of slave unit PWB
connector
Defective harness between slave unit
PWB and ICU PWB
Slave unit PWB mother board
connector pin breakage
Check & Check connector and harness of slave
Remedy unit PWB and ICU PWB.
Check grounding of machine.
F1 00 Content Finisher communication trouble
Detail Communication cable test error after
turning on the power or exiting from
SIM.
Communication error with the finisher
Cause Improper connection or disconnection
of connectors and harness between the
machine and the finisher.
Finisher control PWB trouble
Control PWB (PCU) trouble
Malfunction by noises
Check and Canceled by turning OFF/ON the
remedy power.
Check connectors and harness in the
communication line.
Replace the finisher control PWB or
PCU PWB.
Details