Canon printer pixma mp780 makes repeated clicking noise but will not work. Shows ##356 on LCDisplay

This is the Automatic Sheet Feeder [ASF] Cam Sensor Error

Movement may cause the plastic guide to move away from the chassis which causes the gears not to rotate properly causing a grinding noise and 5 alternating blinks (SFP) or ##356 (MFP) - ASF Cam Sensor Error.


Remedy: Adjust the Screws & Main Case Unit

Step 1: Remove the Left & Right Covers and the Main Case Unit (main cover).
Step 2: Remove the 4 mounting screws from the Chassis.
Step 3: Remove the Main Unit from the Bottom Case.
Step 4: Turn the Main Unit over (upside down) and place on work surface.
Step 5: Inspect the ASF section of the Main Unit for a gap between the white plastic guide and the Chassis. The size of the gap varies. Even if the gap is not visible, complete the steps below.

Step 6: Disconnect the appropriate cables and remove the Logic Board from the Chassis.
Step 7: Loosen but DO NOT remove the 4 mounting screws which can be located behind the logic board on the Chassis.
Step 8: Reseat the white plastic guide so it sits flush against the Chassis. The tip of the white plastic guide should sit slightly inside the mounting screw hole. When seated correctly, the gap will no longer be present.
Step 9: Tighten the 4 mounting screws without causing the plastic guide to shift.
Step 10: Reassemble the printer and retest.