3Ensure that the computer is turned off. If your computer did not automatically turn off when you shut down the operating system, press and hold the power button until the computer turns off.
Safety Instructions
Use the following safety guidelines to help protect your computer from potential damage and to help ensure your own personal safety.
WARNING: Before working inside your computer, read the safety information that shipped with your computer. For additional safety best practices information, see the Regulatory Compliance Homepage at www.dell.com/regulatory_compliance.
CAUTION: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
CAUTION: When you disconnect a cable, pull on its connector or on its
CAUTION: To avoid damaging the computer, perform the following steps before you begin working inside the computer.
1Ensure that the work surface is flat and clean to prevent the computer cover from being scratched.
2Turn off your computer (see "Turning Off Your Computer" on page 13) and all attached devices.
CAUTION: To disconnect a network cable, first unplug the cable from your computer and then unplug the cable from the network device.
3Disconnect all telephone or network cables from the computer.
4Disconnect your computer and all attached devices from their electrical outlets.
5Disconnect all attached devices from your computer.
6Press and eject any installed cards from the Media Card Reader.
7Press and hold the power button to ground the system board.
14
Before You Begin
