HP LaserJet PRO M521 Repair Manua page 78

2.
Carefully place the document feeder/scanner assembly upside down on a level surface. Carefully
separate the black, adhesive-attached scanner and motor FFCs and Wi-Fi module FFCs from the
scanner lower cover.
Figure 1-97
3. Remove three screws from the scanner lower cover.
Figure 1-98
68 Chapter 1 Removal and replacement
Remove the Wi-Fi module and cable (1 of 6)
Remove the USB cable and USB grounding cable (2 of 6)
ENWW