AT&T 2820 - Manual (Page 39)

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The following suggestions for care for your handset will enable you to
enjoy many years of problem-free use.
• Keep the handset dry. If it gets wet, wipe it dry immediately. Liquids
might contain minerals that can corrode the electronic circuits.
• Use and store the handset only in normal temperature environments.
Temperature extremes can shorten the life of electronic devices, and
distort or melt plastic parts.
• Handle the handset gently and carefully. Dropping it can damage
circuit boards and cases and can cause it to malfunction.
• Keep the handset away from excessive dust and dirt, which can
cause premature part wear.
• Occasionally wipe the handset with a damp cloth to keep it looking
new. Do not use harsh chemicals, cleaning solvents, or strong
detergents..
Modifying or tampering with the handset internal components can
cause a malfunction and might invalidate the warranty and void
your FCC authorization to operate it.
• Do not clean any part of your phone with benzene, thinner or other
solvent chemicals as this may cause permanent damage and will not
be covered by warranty. When necessary, clean with a damp cloth.
• Keep your phone away from hot, humid conditions or strong sunlight.
• The LCD display panel is made of glass, and may break if the unit is
dropped. Place the unit securely on a stable surface.
• Keep the product away from heat sources, such as radiators, stoves,
heaters, and other heat-generating products.
• Never immerse the unit in water, use your phone outdoors in the rain,
or handle it with wet hands.
• Do not subject the base unit to extreme force, shock, or fluctuations in
humidity.
• Do not tamper with the internal components or disassemble the unit.
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CARE AND MAINTENANCE
CARING FOR YOUR PRODUCT