Casio PF-8000 Operation Manual page 4

I Power Supply and
The calculator uses two CR2032 lithium batteries for calculation/dlnpliiy ll nhu uses
one CR1220 lithium battery for memory backup. If display contrast Is low nvnn when
the contrast control (p. 8) adjusted to the maximum, it indicates that thct hniim inn luive
become weak. Replace the batteries as soon as possible using the procedurti <lm<.iilmcl
below. If the old batteries are not replaced, memory may be lost. Even whun tint ml
culator functions normally, replace batteries every 2 years.
• How to replace the batteries:
1. Calculation/display batteries
(DTurn off the power switch, remove the two screws on the back of the unit and
take off the back cover.
Please refer the figure shown below.
(2) Remove screw (§) and remove the battery-retaining plate.
(3) Take out the both old batteries.
(4) Wipe the surfaces of the two new batteries well with a dry cloth and insert them with
their (+) sides (flat sides) on top.
(5) Hold down the new batteries with the battery-retaining plate and replace screw ® .
(6) Hook the back cover claw to the main body and replace the two screws.
"Be sure to rep/ace both batteries.