HP LaserJet PRO M521 Repair Manua page 143

6.
Disconnect one connector.
Figure 1-197
7. Remove one screw (callout 1), release one tab (callout 2), and then slide the guide toward the
front of the product to release it.
Figure 1-198
ENWW
Remove the HVPS (5 of 12)
Remove the HVPS (6 of 12)
1
2
Removal and replacement procedures
133