Canon MF8540Cdn

• Code: E746 0000
• Description: Error in main controller PCBs
• Causes: Communication error occurred in main controller PCB (other than scanner-related)
• Remedy: Replace main controller PCBs

• Code: E766 8000
• Description: Error in firmware
• Causes: Incorrect digital registration 3 point information
• Remedy: 1.Power off/on 2.Update firmware

• Code: E766 9000
• Description: Error in firmware
• Causes: Error in laser scanner unit power supply
• Remedy: 1.Power off/on 2.Update firmware

• Code: E766 xxxx1
• Description: Error in firmware
• Causes: Error in connection occurred due to main controller software: xxxx Task number related to Exception is shown in decimal
• Remedy: 1.Power off/on 2.Update firmware

• Code: E804 0004
• Description: Error in power supply cooling fan
• Causes: Power supply cooling fan does not rotate in the specified rotation speed.
• Remedy: 1.Check connectors of power supply cooling fan / DC controller PCB 2.Replace power supply cooling fans 3.Replace DC controller PCBs

• Code: E805 0000
• Description: Main Fan error
• Causes: The Main Fan was locked for a specified consecutive period of time.
• Remedy: 1. Check the connection of the Main Fan. 2. Replace the Main Fan.