Casio fx-350D Manual page 11

5/POWER SOURCE
•fx-3500
Two alkaline-manganese batteries (LR44) give ap-
proximately 7 50 hours continuou s operation
(1,820 hours on type SR44 (G-13) silver oxide bat-
teries) . When battery power decreases, the whole
display darkens. Batteries should then be renewed.
Be sure to switch OFF the power before changing .
Battery replacement
1. Open the battery compartment lid on the back of
the unit by loosening the screw. Never touch th e
inside of the unit except the battery compartment .
2. Remove dead batt eri es and insert new .batteries
with porality as indicated.
3 . Replace the lid. Screw -carefully .
PRECAUTIONS:
In correctly using batteries can cause them to burst or
leak, possibly damaging the interior of the unit . Note
t he following precautions:
• Be sure that the positive (
+)
and negative ( - ) poles
of each battery are facing in the proper direction.
•Never mix batte ri es of different types.
• Never mix old batteries and new ones .
• Never leave dead batte ries in the battery com -
partment.
• Remove the batteries if you do not plan to use th e
unit for long periods .
•Replace the batteries at least once every 2 years, no
matter how much the unit is used during that period .
• Never try to recharge the batteries supplied with th e
unit.
• Do not expose batteries t o direct heat, let them be-
come shorted, or try to take them apart.
~
Keep batteries out of the reach of small children .
If sw allowed, consult with a physician immediately .
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