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2-2 Dell Precision WorkStations Safety and Regulatory Information
•
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
or
System User’s 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.
When Working Inside Your Computer
Before you remove the computer cover, perform the following steps in the sequence
indicated.
CAUTION: Do not attempt to service the computer system yourself, except
as explained in this guide and elsewhere in Dell documentation. Always
follow installation and service instructions closely.
NOTICE: To help avoid possible damage to the system board, wait 10 to
30 seconds after turning off the system before removing a component from
the system board or disconnecting a peripheral device from the computer.
1. Turn off your computer and any peripherals.
2. 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 computer, before
touching anything inside your computer.
While you work, periodically touch an unpainted metal surface on the computer
chassis to dissipate any static electricity that might harm internal components.
3. Disconnect
your computer and peripherals from their power sources. Also,
disconnect any telephone or telecommunication lines from the computer.
Doing so reduces the potential for personal injury or shock.