HP LaserJet PRO M521 Repair Manua page 60

Document feeder/scanner whole unit reinstallation
1. When reinstalling the document feeder/scanner assembly, align the four alignment pins on the
bottom of the document feeder/scanner assembly with the slots on the chassis.
Figure 1-66
2. Ensure the FFCs and cables are routed through the retainers on the right side of the product.
Figure 1-67
50 Chapter 1 Removal and replacement
Reinstall the document feeder/scanner assembly (1 of 3)
Reinstall the document feeder/scanner assembly (2 of 3)
ENWW