• Code: E615-0001-00
• Description: Error in self-diagnosis of the encryption module
• Causes: An error was detected in self-diagnosis of the encryption library.
• Remedy: [Remedy] Perform the following in the order while checking whether the error is cleared. - Reinstall the necessary application software and restore the backup data once the error is cleared. 1. After reinstalling the system software using SST or a USB flash drive, turn OFF and then ON the main power. 2. Obtain the necessary backup data by referring to the backup data list. 3. Enter safe mode using (2+8) startup, and execute [4] Clear/Format> [2] Flash Format (Flash format) using a USB flash drive. 4. After replacing the Flash PCB, reinstall the system software using SST or a USB flash drive. [Reference] For backup and restoration, refer to "Adjustment> Main Controller System" and "Appendix> Backup Data List" in the Service Manual.

• Code: E674-0001-07
• Description: Fax Board communication error
• Causes: An error was detected for the specified number of times in communication with the Fax Board.
• Remedy: [Related parts] R1.00 - Harness between the Fax Board and the Main Controller PCB - Fax Board - Main Controller PCB [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: E674-0002-07
• Description: Fax Board communication error
• Causes: An error was detected for the specified number of times in communication with the Fax Board.
• Remedy: [Related parts] R1.00 - Harness between the Fax Board and the Main Controller PCB - Fax Board - Main Controller PCB [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: E674-0004-07
• Description: Fax Board communication error
• Causes: A communication error occurred when accessing the modem IC used for fax.
• Remedy: [Related parts] R1.00 - Harness between the Fax Board and the Main Controller PCB - Fax Board - Main Controller PCB [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: E674-0008-07
• Description: Fax Board communication error
• Causes: A communication error occurred when accessing the port IC used for fax.
• Remedy: [Related parts] R1.00 - Harness between the Fax Board and the Main Controller PCB - Fax Board - Main Controller PCB [Remedy] Check/replace the related harness/cable, connector and parts.

• Code: E674-0010-07
• Description: Fax Board communication error
• Causes: A communication error occurred when opening the Timer Device used for fax.
• Remedy: Check/replace the Main Controller PCB

• Code: E674-0011-07
• Description: Fax Board communication error
• Causes: A communication error occurred when starting the Timer Device used for fax.
• Remedy: Check/replace the Main Controller PCB

• Code: E674-0020-07
• Description: Fax Board communication error
• Causes: An error occurred in the modem IC used for fax.
• Remedy: [Related parts] R1.00 - Harness between the Fax Board and the Main Controller PCB - Fax Board - Main Controller PCB [Remedy] Check/replace the related harness/cable, connector and parts.