HP LaserJet PRO M521 Repair Manua page 141

2.
Place the product on its side with the gear cover facing up. Remove one screw (callout 1).
NOTE:
The gears behind the cover are not captive and can easily be dislodged if the cover is removed.
Figure 1-193
3.
Place the product on its rear side. Remove one screw, and then remove the base-plate (callout 2).
Reinstallation tip
the rear of the product.
Figure 1-194
ENWW
In this figure the gear cover is shown removed for clarity. Do not remove the gear cover.
Remove the HVPS (1 of 12)
Be sure to correctly align the base-plate. It should match the base-plate at
Remove the HVPS (2 of 12)
2
Removal and replacement procedures
131