HP LaserJet PRO M521 Repair Manua page 121

12.
Remove the LVPS.
Figure 1-164
Reinstall the LVPS
The black plastic cap can become dislodged when removing the LVPS. Reattach the cap before
▲
reinstalling the assembly.
NOTE:
Figure 1-165
ENWW
Remove the LVPS (10 of 10)
Be sure to reconnect the FFC. A 51 error will occur if it is not connected.
Reinstall the LVPS
Removal and replacement procedures
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