Dell Inspiron 15 (N5040, Mid 2011) User Manual
Page 11
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Before You Begin
11
6 Disconnect all attached devices from your computer.
CAUTION:
To help prevent damage to the system board, remove the main battery
(see "Removing the Battery" on page 13) before working inside the computer.
7 Remove the battery (see "Removing the Battery" on page 13).
8 Turn the computer top-side up, open the display, and press the power
button to ground the system board.
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