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Safety Instructions: Dell™ PowerEdge™ Troubleshooting Guide
Use the following safety guidelines to
help protect your computer system from potential damage and to ensure your own personal
safety.
As you use
your computer system, observe the following safety guidelines.
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WARNING:
Do not operate your computer system with any cover(s)
(including computer covers, bezels, filler brackets, front-panel inserts, and so on)
removed. |
- 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.
- To help avoid possible damage to the system board, wait 5 seconds after
turning off the system before disconnecting a device from the computer.
- 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
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 Checking Inside Your 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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WARNING:
Improper or prolonged keyboard use may result in injury. |
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.
- Adjust the tilt of the monitor, its contrast and brightness settings, and
the lighting around you (such as overhead lights, desk lamps, and the curtains or blinds
on nearby windows) to minimize reflections and glare on the monitor screen.
- Use a chair that provides good lower back support.
- Keep your forearms horizontal with your wrists in a neutral, comfortable
position while using the keyboard or mouse.
- Always leave space to rest your hands while using the keyboard or mouse.
- Let your upper arms hang naturally at your sides.
- Sit erect, with your feet resting on the floor and your thighs level.
- When sitting, make sure the weight of your legs is on your feet and not
on the front of your chair seat. Adjust your chair's height or use a footrest, if
necessary, to maintain proper posture.
- Vary your work activities. Try to organize your work so that you do not
have to type for extended periods of time. When you stop typing, try to do things that use
both hands.
Before you remove the computer covers,
perform the following steps in the sequence indicated.
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CAUTIONS:
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.
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
disconnecting a peripheral device from the computer.
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1. Turn off your computer and any
peripherals.
2. 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.
3. Touch 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.
In addition, take note of these safety
guidelines when appropriate:
- When you disconnect a cable, pull on its connector or on its
strain-relief loop, not on the cable itself. Some cables have a connector with locking
tabs; if you are disconnecting this type of cable, press in on the locking tabs before
disconnecting the cable. As you pull connectors apart, keep them evenly aligned to avoid
bending any connector pins. Also, before you connect a cable, make sure both connectors
are correctly oriented and aligned.
- Handle components and cards with care. Don't touch the components or
contacts on a card. Hold a card by its edges or by its metal mounting bracket. Hold a
component such as a microprocessor chip by its edges, not by its pins.
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WARNING:
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. |
Static electricity can harm delicate
components inside your computer. To prevent static damage, discharge static electricity
from your body before you touch any of your computer's electronic components, such as the
microprocessor. You can do so by touching an unpainted metal surface on the computer
chassis.
As you continue to work inside the
computer, periodically touch an unpainted metal surface to remove any static charge your
body may have accumulated.
You can also take the following steps to
prevent damage from electrostatic discharge (ESD):
- When unpacking a static-sensitive component from its shipping carton, do
not remove the component from the antistatic packing material until you are ready to
install the component in your computer. Just before unwrapping the antistatic packaging,
be sure to discharge static electricity from your body.
- When transporting a sensitive component, first place it in an antistatic
container or packaging.
- Handle all sensitive components in a static-safe area. If possible, use
antistatic floor pads and workbench pads.
The following caution may appear
throughout this document to remind you of these PRECAUTIONS:
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CAUTION:
See "Protecting Against Electrostatic Discharge" in the
safety instructions at the front of this guide.
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