HP LaserJet PRO M521 Repair Manua page 37

7.
Rotate the bottom of the rear cover assembly away from the product.
Figure 1-30
8. Pull down on the rear cover assembly to remove it.
Figure 1-31
Reinstallation tip
the bottom of the cover into place.
ENWW
Remove the rear cover assembly (7 of 8)
Remove the rear cover assembly (8 of 8)
Insert the top of the cover first to make sure the tabs are in place and then rotate
Removal and replacement procedures
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