Description: IMC communication interface error (Framing)
Causes: A framing error occurs in communication between the CPU and the IMC. - IMC memory defect/data abnormality.
Remedy: Check the memory of the IMC.
Code: E7-02
Description: LSU trouble
Causes: The BD signal from the LSU cannot be detected in a certain cycle. (Always OFF or always ON) - LSU connector or LSU harness defect or disconnection Polygon motor rotation abnormality Laser beams are not generated. MCU PWB abnormality
Remedy: Check connection of the LSU connector. Execute TC 61-03 to check the LSU operations. Check that the polygon motor rotates normally. Check that the laser emitting diode generates laser beams. Replace the LSU unit. Replace the MCU PWB.
Code: E7-10
Description: Shading trouble (Black correction)
Causes: The CCD black scan level is abnormal when the shading. - Improper connection of the CCD unit flat cable CCD unit abnormality - MCU PWB abnormality
Remedy: Check connection of the CCD unit flat cable. Check the CCD unit.
Code: E7-11
Description: Shading trouble (White correction)
Causes: The CCD white scan level is abnormal when the shading. - Improper connection of the CCD unit flat cable Dirt on the mirror, the lens, and the reference white plate - Copy lamp lighting abnormality CCD unit abnormality - MCU PWB abnormality (When occurred in the ADF scan position.) - Improper installation of the mirror unit
Remedy: Clean the mirror, lens, and the reference white plate. Check the light quantity and lighting status of the copy lamp (TC 05-03). Check the MCU PWB.
Code: E7-16
Description: Abnormal laser output
Causes: When the laser output is stopped, HSYNC is detected. - Laser abnormality MCU PWB abnormality.
Remedy: Check the laser emitting diode operation. Replace the MCU PWB.
Code: F5-02
Description: Copy lamp lighting abnormality
Causes: The copy lamp does not turn on. - Copy lamp abnormality - Copy lamp harness abnormality - CCD PWB harness abnormality.
Remedy: Use TC 5-3 to check the copy lamp operations. When the copy lamp lights up. Check the harness and the connector between the CCD unit and the MCU PWB. When the copy lamp does not light up. Check the harness and the connector between the copy lamp unit and the MCU PWB. Replace the copy lamp unit. Replace the MCU PWB.