HP EliteBook 820 G4 Maintenance And Service Manual page 73

4. Disconnect the following cables from the system board:
(1) Speaker cable
(2) Speaker cable and antenna cables from clips
(3) Display cable
5. Remove the 4 Phillips M2.5×5.0 screws (1) that secure the system board to the computer.
6. Loosen the 2 captive Phillips screws (2) that secure the fan to the computer.
7. Lift the right side of the system board up at an angle (3).
Component replacement procedures 63