Casio FX300MS User Guide - Page 37

fx-83MS/fx-270MS/fx-350MS This calculator is powered by single G13 Type (LR44) button battery. • Replacing the Battery Dim figures on the display of the calculator indicate that battery power is low. Continued use of the calculator when the battery is low can result in improper operation. Replace the battery as soon as possible when display figures become dim. • To replace the battery 1 Press A i to turn off power. 2 Remove the screw that holds the battery cover in place and then remove the battery cover. 3 Remove the old battery. 4 Wipe off the sides of new battery with a dry, soft cloth. Load it into the unit with the positive k side facing up (so you can see it). 5 Replace the battery cover and secure it in place with the screw. 6 Press 5 to turn power on. Screw E-35