Description: Operation panel PWB communication error
Causes: Firmware upgrade error Defective main PWB. Defective main operation panel PWB.
Remedy: Ffirmware upgrade error Execute again upgrading. Replace the main firmware DIMM with the latest one and then execute again upgrading. Defective main PWB. Replace the main PWB and check for correct operation. Defective main operation panel PWB. Replace the main operation panel PWB and check for correct operation.
Code: F040
Description: Engine PWB communication error
Causes: Firmware upgrade error Defective main PWB. Defective engine PWB.
Remedy: Ffirmware upgrade error Only for engine firmware, execute upgrading using USB memory in which software for 40/ 40, 50/40 ppm model and for 25/25, 30/30 ppm model are stored individually. Defective main PWB. Replace the main PWB and check for correct operation. Defective engine PWB. Replace the engine PWB and check for correct operation.
Code: F041
Description: Scanner PWB communication error
Causes: Defective main PWB. Defective ISM PWB.
Remedy: Defective main PWB. Replace the main PWB and check for correct operation. Defective ISM PWB. Replace the ISM PWB and check for correct operation.
Code: F050
Description: Engine ROM checksum error
Causes: Defective engine PWB
Remedy: Replace the engine PWB and check for correct operation.
Code: F090
Description: Fax control PWB communication error
Causes: Defective main PWB.
Remedy: Replace the main PWB and check for correct operation.