Dell Latitude E6220 (Mid 2011) - Manual (Page 49)

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Coin-Cell Battery
Removing The Coin-Cell Battery
1. Follow the procedures in Before Working on Your Computer.
2. Remove the secure digital (SD) card.
3. Remove the battery.
4. Remove the base cover.
5. Remove the hard drive.
6. Remove the Bluetooth module.
7. Remove the speakers.
8. Remove the bottom chassis.
9. Disconnect the coin-cell battery cable from the system board.
10. Remove the coin-cell battery from the computer.
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