When using your computer system, Ergonomic computing habits – Dell PowerEdge 4350 User Manual
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YARNING: Detta system kan ha fiera nätkablar. En behörig servfceteknlker
mäste koppla loss alla nätkablar innan service utfors för att minska risken
för elektriska stdtar.
When Using Your Computer System
As you use your computer system, observe the following safety guidelines:
•
Be sure your computer, monitor, and attached peripherals are electrically rated to
operate with the AC power available in your location.
•
To help avoid possible damage to the system board, wait 5 seconds after turning
off the system before removing a component from the system board or discon
necting a peripheral device from the computer.
•
To help prevent electric shock, plug the computer and peripheral power cables
into properly grounded electrical outlets. 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 un
interruptible power supply (UPS).
•
Be sure 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
Chapter 7, "Checking Inside the Computer."
•
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.
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Ergonomic Computing Habits
WARNING: Improper or prolonged keyboard use may result In infury.
For comfort and efficiency, observe the following ergonomic guidelines when setting
up and using your computer system:
•
Position your system so that the monitor and keyboard are directly in front of you
as you work. Special shelves are available (from Dell and other sources) to help
you correctly position your keyboard.
•
Set the monitor at a comfortable viewing distance (usually 510 to 610 millimeters
[20 to 24 inches] from your eyes).
•
Make sure the monitor screen is at eye level or slightly lower when you are sitting
in front of the monitor.
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