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Quick Reference Guide 17
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 strain-relief 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.
To avoid damaging the computer, perform the following steps before you begin working inside the computer.
1
Turn off your computer.
NOTICE: To disconnect a network cable, first unplug the cable from your computer and then unplug it 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.
4
Remove the cable cover, if it is attached.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before
removing the cover.
5
Remove the computer cover:
• Remove the Mini Computer cover (see "Mini Tower Computer" on page 17).
• Remove the Desktop Computer cover (see "Desktop Computer" on page 23).
NOTICE: Before touching anything inside your computer, ground yourself by touching an unpainted 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.
Mini Tower Computer
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the
Product Information Guide.
CAUTION: To guard against electrical shock, always unplug your computer from the electrical outlet before
removing the computer cover.
1
Follow the procedures in "Before You Begin" on page 16.
2
Lay the computer on its side.
3
Slide the cover release latch back as you lift the cover.
4
Grip the sides of the computer cover and pivot the cover up using the hinge tabs as leverage points.
5
Remove the cover from the hinge tabs and set it aside on a soft nonabrasive surface.