Dell Latitude 9420 Service Manual page 23

3. Remove the SIM card
4. Enter service mode.
5. Remove the base cover.
About this task
The following images indicate the location of the WWAN card and provide a visual representation of the removal procedure.
Steps
1. Loosen the single captive screw securing the WWAN-card bracket to the system board.
2. Lift the WWAN-card bracket out of the system.
3. Disconnect the antenna cables from the connectors on the WWAN card.
4. Using a plastic scribe pry open the WWAN card shielding cover from the bottom edge of the WWAN card shielding cover.
5. Using a plastic scribe, pry open the WWAN card shield covering the WWAN card.
6. Lift the WWAN card shielding cover out of the system.
7. Slide and remove the WWAN card from the WWAN-card slot.
NOTE: If any of the two thermal pads located underneath the WWAN card gets detached, adhere it back to the system
board.
tray.
Removing and installing components 23