Dell Latitude 3390 2-in-1 Owner's Manual page 23

b Release the LED board cable from the laptop [2].
NOTE: LED board cable is glued with a adhesive,ensure to peel gently to avoid damage.
c Peel the adhesive tape to access the LED board [3].
d Lift the LED board away from the laptop .
NOTE: The LED board is secured on a cylindrical plastic hook. Ensure to lift the board without a damage to the LED
board hole, that secures it on the system board.
Removing and installing components 23