HP Xw9300 - Workstation - 1 GB RAM Technical Reference Manual page 11

WARNING! Avoiding Metallic Particulates. They can be especially harmful around electronic equipment.
This type of contamination may enter the data center environment from a variety of sources, including, but
not limited to, raised floor tiles, worn air conditioning parts, heating ducts, rotor brushes in vacuum
cleaners, or printer component wear. Because metallic particulates conduct electricity, they have an
increased potential for creating short circuits in electronic equipment. This problem is exaggerated by the
increasingly dense circuitry of any electronic equipment.
Over time, very fine whiskers of pure metal can form on electroplated zinc, cadmium, or tin surfaces. If
these whiskers are disturbed, they might break off and become airborne, possibly causing failures or
operational interruptions. For over 50 years, the electronics industry has been aware of the relatively rare,
but possible, threat posed by metallic particulate contamination. During recent years, a growing concern
has developed in computer rooms where these conductive contaminants are formed on the bottom of some
raised floor tiles.
Although this problem is relatively rare, it might be an issue within your computer room. Since metallic
contamination can cause permanent or intermittent failures on your electronic equipment, Hewlett-Packard
strongly recommends that your site be evaluated for metallic particulate contamination before installation
of electronic equipment.
WARNING! Avoiding Burn Injuries. Some parts inside the computer will be hot. Turn off and unplug the
system, then wait approximately three to five minutes for it to cool down before opening the system access
panels or touching internal components.
WARNING! Avoiding Electrical Problems with Phone Lines. If you have a modem:
Do not attempt to connect this product to the phone line during a lightning storm. Never install telephone
jacks in wet locations unless the telephone line has been disconnected at the network interface. Never
touch uninsulated telephone wires or terminals unless the telephone line has been disconnected at the
network interface. Use caution when installing or modifying telephone lines. Avoid using a telephone
(other than a cordless type) during an lightning storm. There may be a risk from lightning.
Do not use the telephone to report a gas leak in the vicinity of the leak.
Never touch or remove the communications board without first removing the connection to the telephone
network.
CAUTION: Avoiding Static Electricity. Static electricity can damage electronic components. Turn OFF all
equipment and disconnect the power cable before installing an accessory card. Do not let your clothes
touch any accessory card. Handle the card as little as possible and with care.
CAUTION: Getting Information on Ergonomic Issues. It is strongly recommended that you read the
ergonomics information in the Safety and Comfort Guide on the Documentation Library and Diagnostics
CD before using your system. You can access more extensive ergonomics information at
http://www.hp.com/ergo.
Important Safety Warnings 11