Canon ImageRUNNER 1022iF Service Manual page 54

Chapter 2
[2]
[1]
F-2-4
9) Remove the claw [1] at the front, and then release the two hooks [2] using a flathead screwdriver.
10) Remove right cover [4] in the direction of the arrow, and then detach the righy cover [4] by releasing the three hooks [3] at the bottom.
2-4