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6/POWER SOURCE

fx-115s/991s

The CASIO TWO WAY

POWER

system makes it

possible to operate calculators even in Semper

darkness.

*This unit retains memory contents no matter what the

light conditions.

*This unit uses two power sources: a solar cell, and

a single G13 Type (SR44 or LR44) battery!"

*A weakened:battery is indicated when. the memory

contents spontaneously clear or when the display dar-

kens under poor light conditions and cannot be re- .

stored by pressing the (4) key."

" .

*To ensure proper operation the battery should be —

replaced once every three years no ) matter how much

the unit is used.

fx-100s/ 570s

The fx-100s powered by one AA size manganese

dry |

battery (R6P (SUM-3) or UM-3). The fx-570s powered |

by a single

G13 type (SR44 or LR44) battery, As bat- |

tery power weakens, the characters on the display be-

come dim and difficult to read. When this happens,

replace ne battery as soon as: posse:

[

a Sf. oe ao

* Be sure to replace the battery at. least once.every two

years, regardless of how much the-calculatoris used

| during that time. An old battery may leak, 'seriously | |

inportait!

;

{

[

- damaging the interior of.the calculator.: ;| - : <<

* Theibattery: that comes installed .in;the- © Iculator

when you edict it is for factory test

rposes, |

ifes

* Alldata stored i in the memory of the calcula or-is fost [

' when you replace the battery; Be suré.to Make a note

-!of.any important data: before; AOU replage

the, battery.

ARG A

,.DAB Natsu

MiTo Replace Batteries

ed,

fx-115s/570s/991s

—

gine spo

1. Press @) to switch power off.' " (£-570s) a et

2. Remove the screws that hold the back [cover in

place, and then remove the cover.

—~95~—

| Auto Rov

ann er

> ae aie

Bae. argh hgletee

Note

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(age

*Keep batteries out of the reach of small aiden. :

lf swallowed, - CORE

RY Rh, PLY.

ad,

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