Dell Latitude 7420 Service Manual page 37

Steps
1. Remove the single (M2x2) securing the WLAN card bracket to the antenna cables.
2. Lift the bracket from the WLAN card module on the system board.
3. Disconnect the WLAN antenna cables from the WLAN module.
4. Disconnect the WWAN antenna cable and release the cable from the rubber guides on the system board.
5. Remove the two (M2x2) securing the display cable bracket to the system board.
6. Lift to remove the display cable bracket from the computer.
7. Disconnect the display, camera, touch screen, sensor board cables from the system board and release them from cable
guiding tabs.
Removing and installing components 37