• 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.

• Code: 0870
• Description: FAX control PWB to control PWB high capacity data transfer problem
  High-capacity data transfer between the FAX control PWB and the control PWB of the machine was not normally performed even if the data transfer was retried the specified times.
• Causes: Improper installation FAX control PWB. Defective FAX control PWB or control PWB.
• Remedy: Improper installation FAX control PWB. Reinstall the FAX control PWB.
  Defective FAX control PWB or control PWB. Replace the FAX control PWB or control PWB and check for correct operation..

• Code: 0920
• Description: Fax file system error
  The backup data is not retained for file system abnormality of flash memory of the FAX control PWB.
• Causes: Defective FAX control PWB.
• Remedy: Defective FAX control PWB. Replace the FAX control PWB.

• Code: 2000
• Description: Main motor error
  The main motor ready input is not given for 2 s during the main motor is ON.
• Causes: Defective harness between main motor (CN1) and control PWB (YC17), or improper connector insertion. Defective drive transmission system of the main motor. Defective main motor. Defective control PWB.
• Remedy: Defective harness between main motor (CN1) and control PWB (YC17), or improper connector insertion. Reinsert the connector. Also check for continuity within the connector harness. If none, remedy or replace the harness.
  Defective drive transmission system of the main motor. Check if the rollers and gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
  Defective main motor. Replace the main motor.
  Defective control PWB. Replace the control PWB.

• Code: 2610
• Description: PF paper feed motor error (paper feeder)
  The PF paper feed motor of cassette 2 ready input is not given for 2 s during the PF paper feed motor is ON.
• Causes: Defective harness between PF paper feed motor and PF main PWB (YC4), or improper connector insertion. Defective PF paper feed motor drive transmission system. Defective PF main motor. Defective control PWB.
• Remedy: Defective harness between PF paper feed motor and PF main PWB (YC4), 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 paper feed motor drive transmission system. Check if the gears rotate smoothly. If not, grease the bushings and gears. Check for broken gears and replace if any.
  Defective PF main motor. Replace the PF main motor.
  Defective control PWB. Replace the control PWB.