Dell Latitude 7230 Rugged Extreme Tablet Service Manual - Page 35

Installing the WWAN card

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Steps 1. Disconnect the fan cable from the connector on the system board. 2. Unroute the fan cable from its routing guides along the right side of the system-board shielding cover. 3. Peel the gasket at the top-left side of the system-board shielding cover. 4. Pry and open the system-board shielding cover from its bottom side. 5. Continue to pry the system-board shielding cover along its right, top, and left sides. 6. Remove the system-board shielding cover from the tablet. 7. Peel the conductive tape from the WWAN thermal plate. 8. Remove the two screws (M2x3) that secure the WWAN bracket to the system board. 9. Remove the WWAN bracket from the tablet. 10. Remove the single screw (M2x3) that secure the WWAN thermal plate to the system board. 11. Remove the WWAN thermal plate away from the tablet. 12. Pry and remove the WWAN shielding cover from the tablet. 13. Disconnect the antenna cables from the connectors on the WWAN card. 14. Slide and remove the WWAN card from the WWAN-card slot. Installing the WWAN card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The figure indicates the location of the WWAN card and provides a visual representation of the installation procedure. Removing and installing components 35

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Steps
1.
Disconnect the fan cable from the connector on the system board.
2.
Unroute the fan cable from its routing guides along the right side of the system-board shielding cover.
3.
Peel the gasket at the top-left side of the system-board shielding cover.
4.
Pry and open the system-board shielding cover from its bottom side.
5.
Continue to pry the system-board shielding cover along its right, top, and left sides.
6.
Remove the system-board shielding cover from the tablet.
7.
Peel the conductive tape from the WWAN thermal plate.
8.
Remove the two screws (M2x3) that secure the WWAN bracket to the system board.
9.
Remove the WWAN bracket from the tablet.
10.
Remove the single screw (M2x3) that secure the WWAN thermal plate to the system board.
11.
Remove the WWAN thermal plate away from the tablet.
12.
Pry and remove the WWAN shielding cover from the tablet.
13.
Disconnect the antenna cables from the connectors on the WWAN card.
14.
Slide and remove the WWAN card from the WWAN-card slot.
Installing the WWAN card
Prerequisites
If you are replacing a component, remove the existing component before performing the installation procedure.
About this task
The figure indicates the location of the WWAN card and provides a visual representation of the installation procedure.
Removing and installing components
35