• Code: 0180
• Description: Machine number mismatch
  Machine number of main and engine does not match.
• Causes: Data damage of EEPROM.
• Remedy: Data damage of EEPROM. Contact the Service Administrative Division.

• Code: 0600
• Description: Expanded memory (DIMM) installing error
  The expansion memory modules (DIMM) are not correctly mounted.
• Causes: Improper installation expanded memory (DIMM).
• Remedy: Improper installation expanded memory (DIMM). Check the installation of the expanded memory (DIMM).

• Code: 0610
• Description: Expanded memory (DIMM) error
  The expansion memory modules (DIMM) mounted on the main PWB does not operate correctly.
• Causes: Defective expanded memory (DIMM). Defective main PWB.
• Remedy: Defective expanded memory (DIMM). Replace the expanded memory (DIMM) and check for correct operation.
  Defective main PWB. Replace the main PWB and check for correct operation.

• Code: 0640
• Description: Hard disk error
  The hard disk cannot be accessed.
• Causes: Defective hard disk. Defective main PWB.
• Remedy: Defective hard disk. Replace the hard disk and check for correct operation.
  Defective main PWB. Replace the main PWB and check for correct operation.

• 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: The battery is disconnected from the main PWB. Defective main PWB.
• Remedy: The battery is disconnected from the main PWB. Check visually and remedy if necessary
  Defective main PWB. Replace the main PWB and check for correct operation.

• Code: 0870
• Description: FAX control PWB to main PWB high capacity data transfer error
  High-capacity data transfer between the FAX control PWB and the main 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 main PWB.
• Remedy: Improper installation FAX control PWB. Reinstall the FAX control PWB.
  Defective FAX control PWB or main PWB. Replace the FAX control PWB or main 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 and check for correct operation.