Sharp el-9950

229
Appendix
When battery power becomes
low, a message will show
indicating that a new set of
batteries are needed.
1. Turnoffthecalculator’spower
(
@
o
).
2. Turn over the calculator.
 Locatethebattery
compartment cover, and
open the cover as illustrated.
3. ReplaceallfourAAA
batteries as illustrated.
Note: Donotremovethelithium
battery while the unit
operation batteries are
removed; otherwise all the
calculator's stored memory
will be lost.
4. Replacethebattery
compartment cover.
5. After a few seconds, press
O
.
The following message will
appear.
If the message does not
appear, repeat the procedures from step 2.
6. Press
O
.
Do not press
C
. This will clear all the data.
Once every 5 years, the lithium battery will need to be replaced.
The lithium battery is used to maintain the memory of the
calculator.
Replacing the
memory backup
battery
Procedures
for replacing
unit operation
batteries