Description: Control PWB EEPROM error Detecting control PWB EEPROM (U17) communication error.
Causes: Improper installation control PWB EEPROM (U17). Defective control PWB.
Remedy: Improper installation control PWB EEPROM (U17). Check the installation of the EEPROM (U17) and remedy if necessary. Defective control PWB. Replace the control PWB. Data damage of control PWB EEPROM (U17). Contact the Service Administrative Division.
Code: 0170
Description: Billing counting error
Causes: Defective control PWB. Data damage of control PWB EEPROM (U17).
Remedy: Defective control PWB. Replace the control PWB. Data damage of control PWB EEPROM (U17). Contact the Service Administrative Division.
Code: 0180
Description: Machine number mismatch Machine number of main and engine does not match.
Causes: The main PWB or the engine PWB were exchanged. Data damage of control PWB EEPROM (U17).
Remedy: The main PWB or the engine PWB were exchanged. U004 Setting the machine number. Data damage of control PWB EEPROM (U17). Contact the Service Administrative Division.
Code: 0420
Description: Paper feeder communication error Communication error between control PWB and optional paper feeder.
Causes: Improper installation paper feeder. Defective harness between control PWB (YC30) and paper feeder interface connector, or improper connector insertion. Defective control PWB. Defective harness between PF main PWB (YC5) and paper feeder interface connector, or improper connector insertion. Defective PF mainPWB.
Remedy: Improper installation paper feeder. Follow installation instruction carefully again. Defective harness between control PWB (YC30) and paper feeder interface connector, or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness. Defective control PWB. Replace the control PWB. Defective harness between PF main PWB (YC5) and paper feeder interface connector, or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness (Refer to the service manual for the paper feeder). Defective PF mainPWB. Replace the PF main PWB (Refer to the service manual for the paper feeder).
Code: 0830
Description: FAX control PWB flash program area checksum error A checksum error occurred with the program of the FAX control PWB.
Causes: Defective fax software. Defective FAX control PWB.
Remedy: Defective fax software. Install the fax software. Defective FAX control PWB. Replace the FAX control PWB.
Code: 0840
Description: Faults of RTC The time is judged to go back based on the comparison of the RTC time and the current time or five years or more have passed.
Causes: Defective control PWB. The battery is disconnected from the control PWB.
Remedy: Defective control PWB. Replace the control PWB. The battery is disconnected from the control PWB. Check visually and remedy if necessary.