HP xw4200 Service And Technical Reference Manual page 8

WARNING! Battery Safety Information. There is a danger of explosion if the battery is incorrectly
installed. For your safety, never attempt to recharge, disassemble, or burn an old battery. Replace the
battery with the same or equivalent type, as recommended by the manufacturer.
The battery in this system is a lithium battery that does not contain any heavy metals. However, to
protect the environment, do not dispose of batteries in household waste. Return used batteries either to
the shop from which you bought them, to the dealer from whom you purchased your system, or to HP so
that they can either be recycled or disposed of in the correct way. Returned batteries will be accepted
free of charge.
WARNING! Metallic particulates 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 may 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 may 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! Avoid Burn Injuries. Some parts inside the computer will be hot. Turn off and unplug the
system, then wait approximately three to five minutes for them to cool down before opening the system
access panels or touching internal components.
WARNING! 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.
VIII PREFACE