• Code: E604-0000
• Description: Memory shortage
• Causes: The memory is inadequate.
• Remedy: - Install and uninstall the memory - Replace the memory by correct one. - Turn the power off and on. - Replace the video controller board by new one.

• Code: E733-0000
• Description: Printer-related communication error
• Causes: At power-on, an error has occurred in the communication between engine controller and video controller (caused by the engine controller).
• Remedy: - Turn off and then back on the power. - Replace the engine controller board.

• Code: E733-0001
• Description: Printer-related communication error
• Causes: At a time other than power-on, an error has occurred in the communication between engine controller and video controller (caused by the engine controller).
• Remedy: - Turn off and then back on the power. - Replace the engine controller board.

• Code: E733-0004
• Description: Printer-related communication error
• Causes: Undefined command error
• Remedy: - Turn off and then back on the power. - Replace the engine controller board.

• Code: E744-1000
• Description: Illegal ID code during controller firmware download
• Causes: It is detected that the USB product ID sent at downloading of the controller firmware and the product ID of bootrom written in ROM do not match.
• Remedy: - Replace the scanner fan. - Replace the video controller PCB.

• Code: E805-0000
• Description: Fan error
• Causes: Fixing fan error Cause The fixing fan is faulty. The engine controller PCB is faulty.
• Remedy: - Replace the fixing fan. - Replace the engine controller PCB.

• Code: E805-0001
• Description: Fan error
• Causes: Scanner fan error Cause The scanner fan is faulty. The engine controller PCB is faulty.
• Remedy: - Replace the scanner fan. - Replace the engine controller PCB.