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If you continue to use the calculator after the battery annunciator
comes on, power can eventually drop to a level at which the display
becomes dim, and stored data may be affected. If this happens, the
calculator requires fresh batteries before it will operate properly. If
stored data has not been preserved due to extremely low power, the
HP-22S displays MEMORY CLERAR.
Installing Batteries
Once the batteries are removed, you must replace the batteries
within one minute to prevent loss of Continuous Memory. There-
fore, you should have the new batteries readily at hand before
removing the batteries. Also, you must make sure the calculator is off
during the entire process of changing batteries.
1. Have three fresh button-cell batteries at hand.
2. Make sure the calculator is off. Do not press
again until the
entire procedure for changing batteries is completed. Chang-
ing batteries with the calculator on will erase the contents of
Continuous Memory.
3. Hold the calculator as shown. To remove the battery-compart-
ment door, press down and outward on it until it slides off
(away from the center).
A: Assistance, Batteries, Memory, and Service
143
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