Dell Inspiron 570 (Late 2009) - Manual (Page 3)

1. Ensure that the work surface is flat and clean to prevent the computer cover from being scratched.
2. Turn off your computer (see Turning Off Your Computer ).
5. Disconnect all telephone or network cables from the computer.
6. Disconnect your computer and all attached devices from their electrical outlets.
7. Disconnect all attached devices from your computer.
8. Press and eject any installed cards from the optional Media Card Reader.
9. Press and hold the power button while the system is unplugged to ground the system board.
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and aligned.
CAUTION: To avoid damaging the computer, perform the following steps before you begin working inside the computer.
CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.
CAUTION: Before touching anything inside your computer, ground yourself by touching an unpainted metal surface, such as the metal at the back
of the computer. While you work, periodically touch an unpainted metal surface to dissipate static electricity, which could harm internal
components.