Installing The Heat Sink - Dell Latitude 9420 Service Manual

4. Gently flip open the CPU shielding cover from the right side of the cover towards the left side.
5. Lift the CPU shielding cover off the system.
6. Loosen the three captive screws that secure the heat sink to the system board.
7. Lift the heat sink off the system board.

Installing the heat sink

Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following image indicates the location of the heat sink and provides a visual representation of the installation procedure.
Steps
1. Align the screw holes on the heat sink with the screw holes on the system board.
2. Tighten the three captive screws that secure the heat sink to the system board.
3. Align and place the CPU shielding cover, press to fit it firmly.
4. Adhere the two pieces of tape securing the gray WWAN antenna cable from the bottom side of the CPU shielding cover.
5. Adhere the piece of conductive tape and the piece of tape securing the system fan cable to the left side of the CPU
shielding cover.
28 Removing and installing components