Lenovo IdeaCentre B520e - Manual (Page 51)

Step 11. Line the new TV scale board up with the motherboard then secure it with the 3 screws.
Step 12. Connect all the cables to the new TV scale board.
Step 13. Reattach the rear I/O module, TV tuner bracket and TV tuner card.
Step 14. Reattach the EMI cover, back deco, computer cover and computer stand.
Replacing the WLAN card
Note: Turn off the computer and wait 3 to 5 minutes to let it cool down before removing the cover.
Note: It may be helpful to place the computer face-down on a soft flat surface for this procedure. Lenovo
recommends that you use a blanket, towel, or other soft cloth to protect the computer screen from scratches
or other damage.
To replace the WLAN card:
Step 1. Remove the computer cover. Refer to “Removing the computer cover”.
Step 2. Remove the back deco. Refer to “Removing the back deco”.
Step 3. Remove the computer stand. Refer to “Removing the computer stand”.
Step 4. Remove the EMI cover. Refer to “Removing the EMI cover”.
Step 5. Remove the rear I/O module. Refer to “Replacing the rear I/O module”.
Step 6. Remove the TV tuner card. Refer to “Replacing the TV tuner card”.
Step 7. Remove the 2 screws that secure the TV tuner card bracket to the chassis then lift it up to remove it.
Step 8. Disconnect the 2 antenna cables from the WLAN card.
Step 9. Remove the screw that secures the WLAN card to the motherboard.
Step 10. Pull the WLAN card upward to remove it from the card port.
Chapter 8 . Replacing hardware 45