Dell Latitude E6420 (Early 2011) - Manual (Page 79)

System Board Components
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Removing the System Board
1. Follow the procedures in Before Working On Your Computer .
2. Remove the ATG Handle (only for E6420 ATG systems).
3. Remove the ATG Port Cover (only for E6420 ATG systems).
4. Remove the Battery .
5. Remove the Secure Digital Card .
6. Remove the Base Cover .
7. Remove the ExpressCard .
8. Remove the Optical Drive .
9. Remove the Memory .
10. Remove the Hard Drive .
11. Remove the WLAN Card .
12. Remove the WWAN Card .
13. Remove the Coin Cell Battery .
14. Remove the Heat Sink and Processor .
15. Remove the Bluetooth Card .
16. Remove the Keyboard Trim .
17. Remove the Keyboard .
18. Remove the Modem Card
19. Remove the Palmrest Assembly .
20. Remove the ExpressCard Cage .
21. Disconnect and release the speaker cables from the system board.
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