Dell Dimension L c Series, Справочное и ремонтное руководство

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Installing Upgrades on the System Board 2-1
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This chapter describes how to install expansion cards and system memory as well as
replace the system battery (if necessary). It also tells you how to remove and replace
the computer cover and familiarizes you with internal components.
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Working inside your computer is safe— if you observe the following precautions.
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1. Turn off your computer and all devices.
2. Disconnect your computer and devices from their electrical outlets to
reduce the potential for personal injury or shock. Also, disconnect any tele-
phone or telecommunication lines from the computer.
3. Ground yourself by touching an unpainted metal surface on the chassis,
such as the metal around the card-slot openings at the back of the com-
puter, before touching anything inside your computer.
While you work, periodically touch an unpainted metal surface on the com-
puter chassis to dissipate any static electricity that might harm internal
components.
4. Wait 20 seconds after turning off the computer before disconnecting or
removing devices from the system board to avoid possible damage to the
system board.
In addition, Dell recommends that you review the safety instructions at the front of
this guide.