Description: Drum unit EEPROM error No response is issued from the device in reading/writing for 5 ms or more and this problem is repeated five times successively. Mismatch of reading data from two locations occurs eight times successively. Mismatch between writing data and reading data occurs eight times successively.
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Drum unit and drum connect PWB (YC1) Drum connect PWB and relay-L PWB (YC3) Relay-L PWB and engine PWB (YC15) Defective drum unit. Replace the drum unit.
Code: F000
Description: Main PWB - operation PWB communication error
Remedy: Defective connector cable or poor contact in the connector. Reinsert the connector. Also check for continuity within the connector cable. If none, replace the cable. Operation PWB and engine PWB (YC17) Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB. Defective operation PWB. Replace the operation PWB and check for correct operation.
Code: F010
Description: Main PWB checksum error
Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB.
Code: F020
Description: Main PWB RAM checksum error
Remedy: Defective main memory (RAM) in main PWB Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB. Defective expended memory (DIMM) Replace the expansion memory (DIMM). Also in the case of the capacity besides specification, it displays.
Code: F040
Description: Main PWB - print engine communication error
Remedy: Defective main PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace main PWB. Defective engine PWB. Replace the engine PWB and check for correct operation.
Code: F050
Description: Print engine ROM checksum error
Remedy: Defective engine PWB. Turn the main power switch off/on to restart the machine. If the error is not resolved, replace engine PWB.