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MX-M700N SELF DIAG AND TROUBLE CODE 8 – 8
E7-06
Decode error trouble
E7-10
CCD shading trouble
(Black correction)
E7-11
CCD shading trouble
(White correction all pixel adjustment)
E7-12
CCD shading trouble
(White correction center adjustment)
E7-14
CCD communication trouble
E7-50
LSU connection trouble
E7-55
Incompatibility check (55ppm)
(Engine (PCU) detection)
Details
A decode error occurs in making an image.
Section
Controller
Case 1
Cause
Garbled data in input from PCI to PM DM trouble
Data are garbled in image compression/transfer.
Check and
remedy
Check installation of the PWB. (PCI bus)
If the job at occurrence is FAX, check installation
of the FAX PWB.
For the other cases, check the MFP control PWB.
Case 2
Cause
MFP control ASIC PWB abnormality
Check and
remedy
Replace the HDD.
Details
CCD black scan level abnormality when the copy
lamp is turned off.
When the proper offset setup value is not obtained
at turning on the power or CCD shading with SIM
63-2.
Section
Controller
Case 1
Cause
Defective installation of the flat cable to the CCD
unit
Check and
remedy
Check installation of the flat cable to the CCD unit.
Case 2
Cause
CCD unit abnormality
Check and
remedy
CCD unit check
Case 3
Cause
Scanner PWB abnormality
Check and
remedy
Scanner PWB check
Details
The CCD white reference plate scan level
abnormality when lighting the copy lamp
When the proper gain setup value is not obtained
at turning on the power or CCD shading with SIM
63-2. (Retry number 256 times)
Section
Scanner
Case 1
Cause
Mirror, lens, reference white plate dirt
Check and
remedy
Clean the mirror, the lens, and the reference white
plate.
Case 2
Cause
Copy lamp lighting abnormality
Check and
remedy
Check the light quantity and lighting of the copy
lamp. (SIM 5-3)
Case 3
Cause
Defective installation of the flat cable to the CCD
unit
Improper installation of the CCD unit CCD unit
abnormality
Check and
remedy
CCD unit check
Case 4
Cause
Scanner PWB abnormality
Check and
remedy
Scanner PWB check
Details
The CCD white reference plate scan level
abnormality when lighting the copy lamp
When the proper gain setup value is not obtained
at turning on the power or CCD shading with SIM
63-2. (Retry number 256 times)
Section
Scanner
Case 1
Cause
Mirror, lens, reference white plate dirt
Check and
remedy
Clean the mirror, the lens, and the reference white
plate
Case 2
Cause
Copy lamp lighting abnormality
Check and
remedy
Check the light quantity and lighting of the copy
lamp. (SIM 5-3)
Case 3
Cause
Defective installation of the flat cable to the CCD
unit.
Improper installation of the CCD unit 3
CCD unit abnormality.
Check and
remedy
CCD unit check
Case 4
Cause
Scanner PWB abnormality
Check and
remedy
Scanner PWB check
Details
Communication trouble between the scanner
PWB and the CCD-ASIC. (Clock synchronization)
When an error occurs in the access check to the
CCD-ASIC executed at turning on the power.
(Retry number 5 times)
Section
Scanner
Case 1
Cause
Defective installation of the harness connected to
the CCD unit
Check and
remedy
Check the harness connected to the CCD unit.
Case 2
Cause
CCD unit abnormality
Check and
remedy
CCD unit check
Case 3
Cause
Scanner PWB abnormality
Check and
remedy
Scanner PWB check
Details
The LSU connected does not conform to the
machine specifications.
When the combination of the pattern of an input
port on the PCU and the pattern of a port
connected to the LSU is not proper.
Section
Engine
Case 1
Cause
LSU connection trouble
Check and
remedy
Check connection between the PCU and the LSU
and the harness.
Case 2
Cause
PCU PWB trouble LSU trouble
Check and
remedy
Check the LSU. Check the PCU.
Details
An error is detected in the internal incompatibility
check in the engine (PCU).
Section
Engine (PCU)
Case 1
Cause
PCU PWB trouble or a improper PCU PWB has
been installed.
Check and
remedy
Check the PCU PWB.