Dell Latitude XT3 (Mid 2011) - Manual (Page 69)

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Display Closure Sensor
Removing the Display Closure Sensor
1. Follow the procedures in Before Working On Your Computer.
2. Remove the battery.
3. Remove the back panel.
4. Remove the keyboard trim.
5. Remove the hard drive assembly.
6. Remove the base cover.
7. Remove the palmrest.
8. Disconnect the display closure sensor flex cable from the system board.
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