• Code: E746
• Description: Different Image Analysis PCB model
• Remedy: 1. Check the connection of the Image Analysis PCB. 2. Replace the Image Analysis PCB.

• Code: E748
• Description: Main Controller PCB error
• Remedy: Replace the Main Controller PCB

• 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_G1 Staple Finisher-G1/Booklet Finisher-G1 IFN_D1 Inner Finisher-D1 G3CCB Super G3 FAX Board-AK1/Super G3 2nd Line Fax Board-AK1/Super G3 3rd/4th Line Fax Board-AK1 G3CCM Super G3 FAX Board-AK1/Super G3 2nd Line Fax Board-AK1/Super G3 3rd/4th Line Fax Board-AK1 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: E760-0001
• Description: Main Controller PCB 2 internal error
  1. Turn OFF and then ON the main power. 2. Remove and then install the DDR2-SDRAM (J201) on the Main Controller PCB 2. 3. Replace the DDR2-SDRAM on the Main Controller PCB 2. 4. Replace the Main Controller PCB 2. NOTE: If the error occurs periodically or it occurs with specific jobs although it can be solved by turning OFF and then ON the power, upgrade the system software to the latest version.
• Remedy: Error was detected in the Image Processing Chip on the Main Controller PCB 2.

• Code: E800-0000
• Description: Power condition unmatched error between Main Controller PCB and DC Controller PCB
  The power of DC controller PCB still keep ON even if it reaches 90 sec after detecting the power OFF by the main controller PCB.
• Remedy: 1. Wait till the power is turned off. 2. Turn the main power switch ON.

• Code: E804-0000
• Description: Failure of the Power Supply Cooling Fan
  When lock signal is detected for 5 sec while the Power Supply Cooling Fan (FM5) is stopped. * The same condition is detected after the error retry is performed.
• Remedy: 1. Disconnect and then connect the connector (J205) on the DC Controller PCB (UN2). 2. Replace the Power Supply Cooling Fan (FAN6). 3. Replace the DC Controller PCB (UN2).

• Code: E804-0001
• Description: Unstable rotation of the Power Supply Cooling Fan (FAN6)
  The fan stop signal is detected for 5 minutes or more and the retry operation fails 4 times continuously after generating the ON signal of the Power Supply Cooling Fan (FAN5).
• Remedy: 1. Check connection of the Connectors (J2003/J119). 2. Replace the Power Supply Cooling Fan (FM5).

• Code: E805-0000
• Description: Failure of the Exhaust Fan (Rear) (FM3)
  When lock signal is detected for 15 sec while the Exhaust Fan (Rear) (FM3) is stopped. * The same condition is detected after the error retry is performed.
• Remedy: 1. Check connection of the Connectors (J2010/J2501/J206). 2. Replace the Exhaust Fan (Rear) (FM3). 3. Replace the DC Controller PCB (UN2).