• Code: E748-2001
• Description: Main Controller PCB access error
• Remedy: 1. Remove and then reinstall the DDR2-SDRAM(M0/M1/P). 2. Replace the Main Controller PCB 1/2.

• Code: E748-4910
• Description: Main Controller PCB 2 error
• Remedy: Replace the Main Controller PCB 2.

• Code: E748-9000
• Description: System error
• Remedy: Contact to the sales companies

• Code: E753-0001
• Description: Download error. Firmware update error
• Remedy: Turn OFF and then ON the power.

• Code: E753-0001
• Description: Download Error. System Software Update Error Error occurs when updating system software of uninstalled options
• Remedy: Check the log to find where the download error has been occurred. <FIN_D1> Staple Finisher-D1/Booklet Finisher-D1/Paper Folding Unit-H1/Document Insertion Unit-K1/Inner Booklet Trimmer-A1 <PIU_B1> Professional Puncher Integration Unit-B1 When any of the above system software is displayed, check if the target option has been installed. When the target option has not been installed: Turn OFF and then ON the main power supply to restore (since there is no system software to be updated.). When the target option has been installed: Check if the accessory is correctly installed and if the target system software to be downloaded is for the installed option. Then download the appropriate system software again.

• Code: E804-0000
• Description: Error in Power Supply Cooling Fan (FM3). Error in the Power Supply Cooling Fan is detected.
• Remedy: Connector disconnection, failure of Fan.

• Code: E804-0000
• Description: Power Supply Cooling Fan 1/2 error. The Fan stop signal is detected for 5 seconds or longer and retry is failed 4 times in a row although the Power Supply Cooling Fan 1 (FM14)/Power Supply Cooling Fan 2 (FM15) is turned ON. The error detection signal cable is shared with the Fans, and it is not detected with which Fan the error occurs.
• Remedy: 1. Check the connection of the Connector. 2. Replace the Power Supply Cooling Fan 1 (FM14)/Power Supply Cooling Fan 2 (FM15).

• Code: E804-0001
• Description: Fixing Power Supply Cooling Fan error. The Fan stop signal is detected for 1.5 seconds or longer and retry is failed 4 times in a row although the Fixing Power Supply Cooling Fan (FM7) is turned ON.
• Remedy: 1. Check the connection of the Connector. 2. Replace the Fixing Power Supply Cooling Fan (FM7).