Casio fx-991W Calculator User Manual


 
E-1
Safety Precautions
Be sure to read the following safety precautions before
using this calculator. Keep this manual handy for later ref-
erence.
Caution
This symbol is used to indicate information that can
result in personal injury or material damage if ignored.
Batteries
After removing the batteries from the calculator, put
them in a safe place where there is no danger of
them getting into the hands of small children and
accidently swallowed.
Keep batteries out of the reach of small children. If
accidently swallowed, consult with a physician im-
mediately.
Never charge batteries, try to take batteries apart, or
allow batteries to become shorted. Never expose bat-
teries to direct heat or dispose of them by incinera-
tion.
Misuse of batteries can cause them to leak acid that
can cause damage to nearby items and creates the
possibility of fire and personal injury.
•Always make sure that a battery’s positive
k and
negative
l sides are facing correctly when you
load it into the calculator.
•Remove the batteries if you do not plan to use the
calculator for a long time.
•Use only the type of batteries specified for this cal-
culator in this manual.
Disposing of the Calculator
Never dispose of the calculator by burning it. Doing
so can cause certain components to suddenly burst,
creating the danger of fire and personal injury.