Causes: SD card trouble or contact error MFPC PWB trouble.
Remedy: Replace the SD card. Check the SD card socket. Replace the MFPC PWB.
Code: E7-10
Description: Shading error (Black correction)
Causes: 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.
Remedy: Check connection of the harness to the CCD unit. Check the CCD unit. Check the SCU PWB.
Code: E7-11
Description: Shading error (White correction)
Causes: 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.
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.
Causes: Laser deterioration, power reduction Disconnection or improper connection of harness and connector between LD PWB and MFPC PWB.
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.