Code :

Code: E7-50
Description: Combination error between PCU PWB and firmware
Causes: A PWB/firmware/LSU which is not compatible with the machine specifications is detected. PCU PWB trouble LSU trouble
Remedy: Check the kind and the version of the firmware. Check or replace the LSU. Check or replace the PCU PWB.

Code: E7-55
Description: PWB information sum check error
Causes: EEPROM device trouble. EEPROM device contact trouble. Device access error due to noises.
Remedy: Replace the PWB.

Code: E7-60
Description: Combination error between MFP PWB and firmware
Causes: A PWB/firmware which is not compatible with the machine specifications is detected in the MFPC PWB. MFPC PWB trouble.
Remedy: Check the kind and the version of the firmware. Check or replace the MFPC PWB.

Code: E7-61
Description: Combination error between MFP and PCU
Causes: Combination error between the MFPC PWB and the PCU PWB. MFPC PWB trouble. PCU PWB trouble.
Remedy: Check the combination between the MFPC PWB and the PCU PWB. Replace the MFPC PWB. Replace the PCU PWB.

Code: E7-80
Description: Communication error between MFP and SCU
Causes: SCU PWB - MFPC PWB connection trouble. SCU PWB trouble. MFPC PWB trouble.
Remedy: Check connection of the SCU PWB and the MFPC PWB. Check the ground. Replace the SCU PWB. Replace the MFPC PWB.

Code: E7-90
Description: Communication error between MFP and PCU
Causes: PCU PWB - MFPC PWB connection trouble. PCU PWB trouble. MFPC PWB trouble.
Remedy: Check connection of the PCU PWB and the MFPC PWB. Check the ground. Replace the PCU PWB. Replace the MFPC PWB.

Code: E7-91
Description: FAX reception image data error
Causes: Image data process abnormality HDD trouble SD card trouble or contact error Image compression data corruption MFPC PWB trouble DIMM memory trouble or contact error FAX control PWB trouble
Remedy: Use SIM60-01 to check the read/write operations of the memory. Replace the HDD. Replace or check installation of the SD card. Replace the MFPC PWB. Replace or check installation of the DIMM memory. Replace the FAX control PWB.