— 24 —
e. The total number of nested parentheses levels exceeds
six, or when more than 18 pairs of parentheses are used.
(“–
1
–” indicator appears on the display.)
• To clear any of the above conditions, press
t
and per-
form the calculation from the beginning.
• In the case of condition e, you could also press
k
. This
clears the intermediate result just prior to the overflow, so
you can continue with the calculation from that point.
• No error occurs when the result is within the range of
(1
10
99
) to
(1
10
99
). Instead, the display shows all
zeros.
k
Power Supply
This calculator is powered by two AA-size manganese dry
batteries (R6P (SUM-3) or UM-3). Replace batteries as soon
as possible when display characters become dim and difficult
to read.
• Press
t
to turn power on.
• Press
i
to turn power off.
• Power automatically turns off (but data in memory is re-
tained) if no key operation is performed for about six
minutes.
Important!
Incorrect use of batteries can cause them to burst or leak,
possible damaging the calculator.
• Be sure to replace the batteries at least once every two
years, regardless of how much the calculator is used. Old
batteries may leak, causing serious damage to the interior
of the calculator.
