Error 5700 or ##356 on Canon printers

The 5700 error code is a ASF cam error. ASF Cam Sensor Error. When this occurs, the gears cannot rotate properly causing a grinding noise and 5 alternating blinks (SFP) or ##356

Solution:

Step 1: Remove the Left and 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: Disc connect the appropriate cables and remove the Logic Board from the Chassis.

Step 7: Loosen (do not remove) the 4 mounting screws (the mounting screws can be found behind the
logic board) on the Chassis.

Step 8: Re-seat 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.

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