Replacing The Wi-Fi Antenna - Lenovo Y520T-25IKL Hardware Maintenance Manual

Step 7. Disconnect the 2 antenna cables from the Wi-Fi card.
Step 8. Pull the Wi-Fi card out from the slot.
Step 9. Install the new Wi-Fi card:
a. Line up the new Wi-Fi card, and then insert it into the same card slot.
b. Connect the 2 antenna cables to the new Wi-Fi card.
c. Secure the Wi-Fi card to the motherboard with one screw.
Step 10. Reinstall all the removed parts, and then reconnect the cables.

Replacing the Wi-Fi antenna

Note: For this procedure, it helps to lay the computer flat.
36
Lenovo Legion Y520 Tower Hardware Maintenance Manual