Dell Dimension 4500S - Manual (Page 13)

l To help protect your computer from sudden, transient increases and decreases in electrical power, use a surge suppressor, line conditioner, or
uninterruptible power supply.
l Be sure that nothing rests on your computer's cables and that the cables are not located where they can be stepped on or tripped over.
l Do not spill food or liquids on your computer. If the computer gets wet, contact Dell. See "Contacting Dell" in the Owner's Manual for instructions on
obtaining technical assistance.
l Do not push any objects into the openings of your computer. Doing so can cause fire or electric shock by shorting out interior components.
l Keep your computer away from radiators and heat sources. Also, do not block cooling vents. Avoid placing loose papers underneath your computer; do
not place your computer in a closed-in wall unit or on a bed, sofa, or rug.
When Working Inside Your Computer
Before you open the computer cover, perform the following steps in the sequence indicated.
1. Perform an orderly computer shutdown using the operating system menu.
2. Turn off your computer and any devices.
3. Ground yourself by touching an unpainted metal surface at the back of the computer before touching anything inside your computer.
While you work, periodically touch an unpainted metal surface on the computer to dissipate any static electricity that might harm internal components.
4. Disconnect any devices connected to the computer, including the monitor, from their electrical outlets to reduce the potential for personal injury or
shock. Also, disconnect any telephone or telecommunication lines from the computer.
5. Disconnect the power cable to your computer, and then press the power button to ground the system board.
In addition, take note of these safety guidelines when appropriate:
l When you disconnect a cable, pull on its connector, not on the cable itself. As you pull connectors apart, keep them evenly aligned to avoid bending any
pins. Also, before you connect a cable, make sure that both connectors are correctly oriented and aligned.
l Handle components and cards with care. Don't touch the components on a card. Hold a card by its edges or by its metal bracket.
Protecting Against Electrostatic Discharge
To prevent static damage, discharge static electricity from your body before you touch anything inside your computer and periodically while you work inside the
computer. You can do so by touching an unpainted metal surface on the back of the computer.
You can also take the following steps to prevent static damage:
l Do not remove items from their antistatic packing material until you are ready to install them in your computer. Just before unwrapping the antistatic
packaging, be sure to discharge static electricity from your body.
l When transporting a sensitive component, first place it in an antistatic container or packaging.
Battery Disposal
Your computer uses a lithium battery. For instructions about replacing the lithium battery in your computer, see " Replacing the Battery ." The lithium battery is a
long-life battery, and it is very possible that you will never need to replace it.
Do not dispose of the battery along with household waste. Contact your local waste disposal agency for the address of the nearest battery deposit site.
Shutting Down the Computer
CAUTION: Do not attempt to service the computer yourself, except as explained in this guide and elsewhere in Dell documentation. Always follow
installation and service instructions closely.
CAUTION: There is a danger of a new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type
recommended by the manufacturer. Discard used batteries according to the manufacturer's instructions.
NOTICE: To prevent data loss, you must turn off your computer through the Start menu rather than by pressing the power button.
HINT: If you are having difficulty turning off your computer, see " General Problems ."