Dell Latitude E5420 (Early 2011) - Manual (Page 93)

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Audio Board
Removing the Audio Board
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 CPU door .
8. Remove the palm rest .
9. Remove the Bluetooth card .
10. Disconnect the audio board cables from the system board.
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