• Code: E733-0006
• Description: Printer communication error
• Causes: Printer communication error (unknown communication error)
• Remedy: - Turn OFF and then ON the power. - Replace the Engine Controller PCB.

• Code: E740-0002
• Description: Invalid MAC address detection
• Causes: Invalid MAC address detection
• Remedy: - Check the content at Mac address. - Write the Mac address. - Replace the Main Controller PCB.

• Code: E740-0004
• Description: Invalid MAC address detection
• Causes: LAN Controller Chip access error
• Remedy: - Reinstall the firmware

• Code: E748-2012
• Description: Error in Main Controller
• Causes: Failed to rewrite due to no more alternative block of Flash ROM (NAND) available.
• Remedy: - Replace the Main Controller PCB.

• Code: E748-4000
• Description: Error in Main Controller
• Causes: G-Chip loopback ended in timeout.
• Remedy: - Turn OFF and then ON the power. - Replace the Main Controller PCB

• Code: E748-4020
• Description: Error in Main Controller
• Causes: Unknown device was detected on PCI.
• Remedy: - Turn OFF and then ON the power. - Replace the Main Controller PCB.

• Code: E760-0000
• Description: CPU Processing Error
• Causes: Exception of CPU processing occurred.
• Remedy: - Turn OFF and then ON the power.

• Code: E805-0001
• Description: Error in duplex cooling fan
• Causes: Fixing/Power Supply Cooling Fan failure
• Remedy: Replace the Fixing/Power Supply Cooling Fan