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Avoid use and storage in areas subjected to large
amounts of humidity and dust.
Take care never to leave the calculator where it might
be splashed by water or exposed to large amounts of
humidity or dust. Such elements can damage internal
circuitry.
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Never drop the calculator or otherwise subject it to
strong impact.
•
Never twist or bend the calculator.
Avoid carrying the calculator in the pocket of your trou-
sers or other tight-fitting clothing where it might be sub-
jected to twisting or bending.
•
Never try to take the calculator apart.
•
Never press the keys of the calculator with a ball-point
pen or other pointed object.
•
Use a soft, dry cloth to clean the exterior of the unit.
If the calculator becomes very dirty, wipe it off with a
cloth moistened in a weak solution of water and a mild
neutral household detergent. Wring out all excess mois-
ture before wiping the calculator. Never use thinner, ben-
zine or other volatile agents to clean the calculator. Do-
ing so can remove printed markings and damage the
case.
