HP LaserJet PRO M521 Repair Manua page 47

3.
Remove two screws on the right-side of the product.
Figure 1-45
4. Remove one screw from the upper-right side of the product.
Figure 1-46
ENWW
Remove the right cover assembly (2 of 5)
Remove the right cover assembly (3 of 5)
Removal and replacement procedures
37