2Ensure that the computer and any attached devices are turned off. If your computer and attached devices did not automatically turn off when you shut down your operating system, press and hold the power button for several seconds until the computer turns off.
Before Working Inside Your Computer
Use the following safety guidelines to help protect your computer from potential damage and to help ensure your own personal safety.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.
CAUTION: Handle components and cards with care. Do not touch the components or contacts on a card. Hold a card by its edges or by its metal mounting bracket. Hold a component such as a processor by its edges, not by its pins.
NOTICE: 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.
NOTICE: When you disconnect a cable, pull on its connector or on its
NOTICE: To help prevent damage to 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 89.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it from the network wall jack.
3Disconnect any telephone or network cables from the computer.
NOTICE: To help prevent damage to the system board, you must remove the battery from the battery bay before you service the computer.
NOTE: To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use other batteries designed for other Dell computers.
90
