1.Use T9 screwdriver to remove the 5 screws on the chassis and open the top cover with 60 angle.
2.Use static electric tweezers to remove the antenna cable from the main board.
3.Remove the top cover,use PH2 screwdriver to remove 1 screw on the PSE board
4.Remove the PSE board,use PH2 Phillips screwdriver to remove 1 screws on main board
5.Remove the main board from the chassis.