• Code: 0620
• Description: FAX image DIMM error
  DIMM is not installed correctly. DIMM cannot be accessed.
• Causes: DIMM installed incorrectly.
  Defective main PWB.
• Remedy: DIMM installed incorrectly. Check if the DIMM is inserted into the socket on the main PWB correctly.
  Defective main PWB. Replace the main PWB and check for correct operation.

• Code: 0630
• Description: DMA error
  DMA transmission of image data does not complete within the specified period of time.
• Causes: Poor contact in the connector terminals.
  Defective main PWB.
• Remedy: Poor contact in the connector terminals. Check the connection the signal cable for CIS and the main PWB, and the continuity across the connector terminals. Repair or replace if necessary.
  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: 0650
• Description: FAX image DIMM check error
  Improper DIMM is installed.
• Causes: DIMM installed incorrectly.
  Defective main PWB.
• Remedy: DIMM installed incorrectly. Check if the DIMM is inserted into the socket on the main PWB correctly.
  Defective main PWB. Replace the main PWB and check for correct operation.

• Code: 0800
• Description: Image processing error
  JAM010X is detected twice.
• Causes: Defective main PWB.
• Remedy: 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 and check for correct operation.

• 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.