Dell Latitude E5420 (Early 2011) - Manual (Page 73)

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Display Assembly
Removing the Display Assembly
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 keyboard .
6. Remove the optical drive.
7. Remove the hard drive.
8. Remove the CPU door.
9. Remove the palm rest.
10. Disconnect the antenna cables connected to the WLAN/WWAN cards.
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