Canon LBP7210Cdn Manual page 69

IMPORTANT
If a loud noise occurs when you open the rear cover
If the packing materials inside the printer come off when you open the rear cover, a loud noise
occurs. However, this is not a printer malfunction. Proceed to the following procedure.
Remove the two packing materials with tape.
(1) Remove the tape.
(2) Remove the packing materials with tape gently and firmly in the direction of the
arrow.