• Code: E736-0000
• Description: Communication error with CCU/modem, or no FAX board installed on FAX model.
• Remedy: When the same error repeatedly occurs after several times of turning the power OFF/ON, execute the following remedies. (1) Check the connection of connectors between the Main Controller Board (J601, J602) and the FAX-NCU Board (J1201, J1204). (2) Replace the connectors between the Main Controller Board (J601, J602) and the FAX-NCU Board (J1201, J1204). (3) Replace the FAX-NCU Board. (4) Replace the Main Controller Board.

• Code: E740-0002
• Description: Error detection on either Network Board or Mac address
• Remedy: When the same error repeatedly occurs after several times of turning the power OFF/ON, execute the following remedies. (1) Check the connection of the network cable. (2) Replace the Main Controller Board.

• Code: E744-0002
• Description: Language file error
• Remedy: When the same error repeatedly occurs after several times of turning the power OFF/ON, execute the following remedies. Update the set of the Controller Firmware

• Code: E744-4000
• Description: Engine ID error (Invalid engine connection is detected)
• Remedy: When the same error repeatedly occurs after several times of turning the power OFF/ON, execute the following remedies. (1) Check the DC Controller Board. (2) Update the Engine Firmware. (3) Update the set of the Controller Firmware

• Code: E744-6000
• Description: Communication error with Wireless LAN board.
• Remedy: When the same error repeatedly occurs after several times of turning the power OFF/ON, execute the following remedies. (1) Replace the Wireless LAN Board. (4) Replace the Main Controller Board.

• Code: E806-0000
• Description: Fan Motor cannot rotate at specified revolution speed.
• Remedy: When the same error repeatedly occurs after several times of turning the power OFF/ON, execute the following remedies. (1) Replace the Main Fan Unit. (2) Replace the DC Controller Board.

• Code: E808-0001
• Description: Fixing Assembly_Edge Left Cooling Fan error
• Remedy: When the same error repeatedly occurs after several times of turning the power OFF/ON, execute the following remedies. (1) Replace the Edge Left Cooling Fan. (2) Replace the DC Controller Board.

• Code: E808-0002
• Description: Fixing Assembly_Edge Right Cooling Fan error
• Remedy: When the same error repeatedly occurs after several times of turning the power OFF/ON, execute the following remedies. (1) Replace the Edge Right Cooling Fan. (2) Replace the DC Controller Board.