Dell Latitude 7220 Service Manual page 63

Steps
1. Align the smart card reader, and replace the eight (M2x5) screws that secure smart card reader to the system chassis.
2. Align and replace the wireless passthrough daughterboard on the system chassis.
3. Replace the copper adhesive shield to secure the wireless passthrough daughterboard to the smart card reader holder.
4. Replace the two (M2x5) screws that secure the wireless passthrough daughterboard to the system chassis.
5. Connect the smart card reader cable to the connector.
6. Flip the smart card reader cable.
Next steps
1. Install the docking board.
2. Install the system board.
3. Install the coin-cell battery.
4. Install the front camera.
5. Install the microphone.
6. Install the WWAN.
7. Install the WLAN.
8. Install the solid-state drive.
9. Install the system fan.
10. Install the heat-sink.
11. Install the display assembly.
12. Install the batteries.
13. Follow the procedure in after working inside your tablet.
Removing and installing components 63