Before Working Inside Your Computer - Dell 400 Owner's Manual

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:
Product Information Guide.
CAUTION:
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:
servicing that is not authorized by Dell is not covered by your warranty.
NOTICE:
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:
the computer.
1 Turn off your computer.
NOTICE:
from the network wall jack.
2 Disconnect any telephone or telecommunication lines from the computer.
3 Disconnect your computer and all attached devices from their electrical outlets, and then
press the power button to ground the system board.
NOTICE:
metal surface, such as the metal at the back of the computer. While you work, periodically touch an
unpainted metal surface to dissipate any static electricity that could harm internal components.
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Removing and Installing Parts
Before you begin any of the procedures in this section, follow the safety instructions in the
Handle components and cards with care. Do not touch the components or contacts on a
Only a certified service technician should perform repairs on your computer. Damage due to
When you disconnect a cable, pull on its connector or on its strain-relief loop, not on the cable
To avoid damaging the computer, perform the following steps before you begin working inside
To disconnect a network cable, first unplug the cable from your computer and then unplug it
Before touching anything inside your computer, ground yourself by touching an unpainted