How To Replace The Batteries; About The Keyboard - MiLAN M 139 Guia Del Usuario

How to replace the batteries?

Replace batteries as soon as possible when
display characters become dim and difficult to
read.
1. Press
calculator off.
2. Remove the screw that holds the battery
cover in place and then remove the battery
cover.
3. Remove the old batteries.
4. Wipe off the sides of the new batteries with
a dry, soft cloth.
5. Load them into the calculator. Always make
sure that the positive ( ) + and negative ( ) -
terminals of the batteries are facing correctly
when you load them into the calculator.
6. Put the battery cover back in place and
secure it in place with the screw.
7. Press

About the Keyboard

Each key may have up to two functions: one
printed on its face, and a SHIFT function printed
above the key. Press the
pressing the key for the desired function.
For instance, to use the
release the
manual, this type of operations will be summa-
rized as
(
to turn power on.
sin
key, then press
( ).
5
) to switch the
key before
-
1
function, press and
. In this