Installing The Wwan Main Antenna Module - Dell Latitude 9420 Service Manual

6. Remove the heat sink.
7. Remove the display assembly.
8. Remove the battery.
9. Remove the I/O daughter
10. Remove the system board.
11. Remove the USH daughter
About this task
The following images indicate the location of the WWAN main antenna module and provide a visual representation of the
removal procedure.
Steps
1. Remove the four (M1.6x3) screws securing the WWAN main antenna module to the palm-rest assembly.
2. Lift the WWAN main antenna module off the system.

Installing the WWAN main antenna module

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 WWAN main antenna module and provides a visual representation of the
installation procedure.
54 Removing and installing components
board.
board.