MX-M264U TROUBLESHOOTING 7 – 8
E7-07 SD card error
E7-10 Shading error (Black correction)
E7-11 Shading error (White correction)
E7-14 CCD-ASIC error
E7-20 LSU laser detection error
E7-21 LSU LD deterioration trouble
E7-28 LSU control Asic connection error
E7-49 Water Mark data error
E7-50 PCU connection trouble
E7-55 PCU PWB information sum error
Trouble content
Detail MFP
Cause SD card trouble or contact error
MFPC PWB trouble.
Check & Remedy Replace the SD card.
Check the SD card socket.
Replace the MFPC PWB.
Trouble content
Detail SCU
Cause Abnormality in the CCD black scan level when the
scanner lamp is turned OFF.
Improper installation of the harness to the CCD unit.
CCD unit abnormality.
SCU PWB abnormality.
Check & Remedy Check connection of the harness to the CCD unit.
Check the CCD unit.
Check the SCU PWB.
Trouble content
Detail SCU
Cause Abnormality in the CCD white reference plate scan
level when the scanner lamp is turned ON.
Improper installation of the harness to the CCD unit.
Dirt on the mirror, lens, and the reference white plate.
Scanner lamp lighting trouble.
Scanner lamp drive PWB trouble
CCD unit abnormality.
SCU PWB abnormality.
Check & Remedy Check connection of the harness to the CCD unit.
Check connection of the harness to the scanner lamp
unit.
Check or replace the scanner lamp.
Check or replace the scanner lamp drive PWB.
Clean or replace the mirror, the lens, and the
reference white board.
Check or replace the CCD unit.
Check or replace the SCU PWB.
Trouble content
Detail SCU
Cause SCU PWB trouble.
Check & Remedy Check the SCU PWB.
Replace the SCU PWB.
Trouble content
Detail PCU
Cause Laser optical axis misalignment
Reduced laser power, lighting error, laser diode
trouble.
LSU harness, connector trouble
LSU trouble
Check & Remedy Use SIM61-1 to check the operation of the LSU.
Check or replace the LSU control PWB.
Check connection of the LSU harness.
Replace the LSU.
Trouble content Laser trouble
Detail PCU
Cause Laser deterioration, power reduction
Disconnection or improper connection of harness and
connector between LD PWB and MFPC PWB.
Check & Remedy Use SIM61-1 to check the operation of the LSU.
Check connection of the harness of each PWB inside
the LSU.
Replace the MFPC PWB.
Replace the LSU.
Trouble content Access error between the CPU in the PCU PWB and
the LSU control ASIC.
Detail PCU
Cause Improper connection of the communication connector
between the PCU PWB and the MFPC PWB
(interface PWB).
Harness trouble between the PCU PWB and the
MFPC PWB (interface PWB)
PCU PWB or MFPC PWB (interface PWB) trouble.
Check & Remedy Check connection of the connector and the harness
between the PCU PWB and the MFPC PWB
(interface PWB).
Replace the MFPC PWB.
Replace the PCU PWB.
Trouble content
Detail MFP
Cause Watermark data trouble.
HDD trouble.
* When the wartermark data is not installed, U2-60
error occurs in booting.
Check & Remedy Use SIM62-02/SIM62-03 to check HDD read/write.
If the result is NG, a remedy corresponding to E7-03
is required.
Use SIM49-05 to update the watermark data.
(Reinstallation)
Trouble content Unknown PWB identification information is detected
in the PCU PWB.
Detail PCU
Cause A PWB/firmware which does not comply with the
machine specifications is connected.
Check & Remedy Check the kind and the version of the firmware.
LSU connection trouble.
PCU PWB trouble.
LSU trouble.
Trouble content PCU EEPROM PWB information sum error
Detail PCU
Cause PCU EEPROM sum check error.
PCU EEPROM trouble.
PCU EEPROM contact trouble.
Check & Remedy Replace the PCU PWB.
Replace the PCU EEPROM.
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