Dell Precision 620 - Manual (Page 6)

1-2 Dell Precision WorkStations System Information Guide
Safety Instructions
Use the following safety guidelines to help protect your computer system from potential
damage and to ensure your own personal safety.
When Using Your Computer System
As you use your computer system, observe the following safety guidelines.
CAUTION: Do not operate your computer system with any cover(s) (including
computer covers, bezels, filler brackets, front-panel inserts, and so on) removed.
•
To help avoid damaging your computer, be sure that the voltage selection switch on the
power supply is set to match the AC power available at your location:

115V for most of the Americas, Japan, South Korea, and Taiwan
NOTE: The AC power available in Japan is 100 volts (V), but the voltage selection
switch must be set to the 115V position.

230V for most of Europe, the Middle East, and the Far East
Also be sure that your monitor and attached peripherals are electrically rated to operate
with the AC power available in your location.
•
Before working inside the computer, unplug the system to help prevent electric shock
or system board damage. Certain system board components continue to receive power
any time the computer is connected to AC power.
•
Verify that the system board’s standby light-emitting diode (LED) is not on. If it is on,
you may need to wait 10 to 30 seconds for it to go out.
•
To avoid possible damage to the system board, wait 10 to 30 seconds after
disconnecting the computer from AC power before disconnecting a peripheral or
removing a component.
•
To help prevent electric shock, plug the computer and peripheral power cables into
properly grounded power sources. These cables are equipped with three-prong plugs to
help ensure proper grounding. Do not use adapter plugs or remove the grounding
prong from a cable. If you must use an extension cable, use a three-wire cable with
properly grounded plugs.
•
To help protect your computer system from sudden, transient increases and decreases
in electrical power, use a surge suppressor, line conditioner, or uninterruptible power
supply (UPS).
•
Be sure that nothing rests on your computer system’s cables and that the cables are not
located where they can be stepped on or tripped over.
•
Do not spill food or liquids on your computer. If the computer gets wet, consult your
Diagnostics and Troubleshooting Guide.
•
Do not push any objects into the openings of your computer. Doing so can cause fire or
electric shock by shorting out interior components.
•
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.
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