Dell OptiPlex 390 (Mid 2011) - Manual (Page 25)

Speaker
9
Removing the Internal Speaker
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove the cover .
3. Remove the front bezel .
4. Remove the drive cage .
5. Disconnect the speaker cable from the system board.
6. Unthread the internal speaker cable from the fan shelter clip.
7. Press the speaker securing tab, and slide the speaker towards the right of
the computer to release it.
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