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Canon Color imageCLASS MF644Cdw

Error Codes List page 10

  • Code: E766-8000
  • Description: Firmware error
  • Causes: Information on digital registration could not be obtained.
  • Remedy: 1. Install the Engine Controller firmware. 2. Install the set of controller firmware. 3. Replace the Engine Controller PCB (UN1).
  • Code: E766-9000
  • Description: Scanner power state error
  • Causes: Error in the power state of the Laser Scanner Unit (firmware-dependent).
  • Remedy: 1. Update the firmware. 2. Replace the Laser Scanner Unit.
  • Code: E806-0000
  • Description: Main Fan error
  • Causes: The Main Fan fails to rotate at the specified rotation speed.
  • Remedy: 1. Check the connection of the Main Fan (FM1). 2. Replace the Main Fan (FM1).
  • Code: E840-0000
  • Description: Pressure release mechanism error
  • Causes: An error in the pressure release mechanism of the Fixing Assembly was detected.
  • Remedy: 1. Check the harness/connector between the Fixing Pressure Release Switch (SW2) and the Engine Controller PCB (UN1). 2. Check the harness/connector between the Fixing Motor (M702) and the Engine Controller PCB (UN1). 3. Replace the Fixing Motor (M702). 4. Replace the Fixing Assembly (including the Fixing Pressure Release Switch (SW2)). 5. Replace the Engine Controller PCB (UN1).
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