Canon MF3110 - ImageCLASS Laser Multifunction - E100 Laser;Scanner Unit Failure

Chapter 5
5-7
5.5.2.3 E100 Laser/Scanner Unit Failure 0007-6772
Cause:
Laser/Scanner unit failure.
Remedy:
1) Turn the power off and on.
2) Make sure that the Laser/Scanner unit (J801) and ECNT board (J503) are properly connected.
3) Make sure that the Laser/Scanner unit and ECNT board (J504) are properly connected.
4) Make sure connections of the boards (power supply board (CN101), ECNT board (J501, J502)).
5) Replace the Laser/Scanner unit.