Description: Interface error (Overrun) in communication with the IMC PWB An overrun error occurs in communication between the MCU PWB and the IMC PWB.
Causes: IMC PWB-MCU PWB harness defect Improper connection of the MCU PWB connector IMC PWB ROM defect/data abnormality.
Remedy: Check connection of the connector/harness between the IMC PWB and the MCU PWB. Check the ROM of the IMC PWB.
Code: E1-84
Description: Interface error (Framing) in communication with the IMC PWB A framing error occurs in communication between the MCU PWB and the IMC PWB.
Causes: IMC PWB-MCU PWB harness defect Improper connection of the MCU PWB connector IMC PWB ROM defect/data abnormality.
Remedy: Check connection of the connector/harness between the IMC PWB and the MCU PWB. Check the ROM of the IMC PWB.
Code: E7-01
Description: Duplex model memory error The memory capacity for the duplex model machine is improper. Insufficient memory capacity
Causes: The memory capacity of the MCU PWB is improper.
Remedy: Use SIM 26-39 to check that the memory capacity is 32MB. If it is not 32MB, replace the MCU PWB with a suitable one.
Code: E7-02
Description: LSU trouble The BD signal from the LSU cannot be detected in a certain cycle. (Always OFF or always ON)
Causes: 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 SIM 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) The CCD black scan level is abnormal when the shading.
Causes: 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) The CCD white scan level is abnormal when the shading.
Causes: 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 SPF 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 (SIM 05-03). Check the MCU PWB.