Canon MF7450N

• Code: E736-0000
• Description: CCU communication error
  The installed modem PCB is incompatible.
• Remedy: - Check the connectors of the image processor PCB and modem. - Replace the modem PCB. - Replace the image processor PCB.

• Code: E739-0000
• Description: Erroneous communication between controller and network board
  The installed network board is incompatible.
• Remedy: - Check the connectors of the image processor PCB and LAN PCB for normal connection. - Replace the LAN PCB. - Replace the image processor PCB.

• Code: E744-0001
• Description: Language file/boot ROM/USB memory error
  The language file version does not match Bootable.
• Remedy: Download a language file of the correct version.

• Code: E744-0002
• Description: Language file/boot ROM/USB memory error
  The language file is longer than the permitted size.
• Remedy: Download a language file of the correct version.

• Code: E744-0003
• Description: Language file/boot ROM/USB memory error
  The language file version does not match Bootable
• Remedy:

• Code: E744-0004
• Description: Language file/boot ROM/USB memory error
  Language file read error
• Remedy: Download a language file of the correct version.