HP LaserJet PRO M521 Repair Manua page 124

4.
Remove one screw (callout 1), and then carefully remove the right-side guide (callout 2).
CAUTION:
during removal.
Figure 1-168
5. Remove one screw (callout 1), and then remove the left-side guide (callout 2).
Figure 1-169
114 Chapter 1 Removal and replacement
Remove the guide carefully. The solenoid and cable remain attached to the guide
Remove the Tray 2 paper pickup assembly (3 of 10)
Remove the Tray 2 paper pickup assembly (4 of 10)
2
2
1
1
ENWW