Installing The Wlan-Antenna Module - Dell Latitude 7640 Service Manual

Steps
1. For computers shipped with WWAN antennas, remove the single screw (M2x2) that secure the Darwin antenna cable
bracket to the system board.
2. Remove the Darwin antenna cable bracket from the system board.
3. Unroute the two darwin antenna cables, and green P-sensor cable from the routing guide on the I/O daughter-board.
4. Peel off the pieces of tape securing the black WLAN Aux antenna cable on the system board.
5. Unroute the white WLAN Main antenna cable and black WLAN Aux antenna cable from the routing guides on the palm rest.
6. Remove the four screws (M1.6x2.5) that secure the WLAN-antenna module bracket from the system board.
7. Slide and remove the WLAN-antenna module from the WLAN-antenna module slot on the system board.

Installing the WLAN-antenna module

Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The following images indicate the location of the WLAN-antenna module and provide a visual representation of the installation
procedure.
Removing and installing components 55