Before Working Inside Your Computer - Dell 500 Owner's Manual

3 Ensure 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 the power button for at least 8 to
10 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:
safety instructions in the Product Information Guide.
CAUTION:
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:
computer. Damage due to servicing that is not authorized by Dell is not covered by
your warranty.
NOTICE:
loop, not on the cable itself. Some cables have a connector with locking tabs; if you
are disconnecting this type of cable, press in on the locking tabs before you
disconnect the cable. As you pull connectors apart, keep them evenly aligned to
avoid bending any connector pins. Also, before you connect a cable, ensure that
both connectors are correctly oriented and aligned.
NOTICE:
grounding strap or by periodically touching an unpainted metal surface (such as a
connector on the back of the computer).
NOTICE:
before you begin working inside the computer.
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" on page 107).
NOTICE:
and then unplug it from the network wall connector.
3 Disconnect any telephone or network cables from the computer.
4 Disconnect your computer and all attached devices from their electrical outlets.
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Before you begin any of the procedures in this section, follow the
Handle components and cards with care. Do not touch the components
Only a certified service technician should perform repairs on your
When you disconnect a cable, pull on its connector or on its strain-relief
To avoid electrostatic discharge, ground yourself by using a wrist
To help prevent damage to the computer, perform the following steps
To disconnect a network cable, first unplug the cable from your computer,
Adding and Replacing Parts
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