Dell Inspiron Zino HD (410, Mid 2010) - 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 ) and all attached devices.
3. Disconnect all telephone or network cables from the computer.
4. Disconnect your computer and all attached devices from their electrical outlets.
5. Disconnect all attached devices from your computer.
6. Press and hold the power button while the system is unplugged to ground the system board.
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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.