3. REPLACING BATTERIES
1 Switch the power of the calculator off.
2 Slide the battery compartment cover on the back of the unit
in the direction indicated by the arrow.
3 Remove the two old batteries.
4 Load two new batteries into the calculator so that their
positive + and negative - ends are facing properly. Be
sure to replace all two batteries with new ones.
5 Replace the battery compartment cover, sliding it in the
direction opposite that indicated by the arrow.
6 Perform the RESET operation described below.
Data stored in memory can be corrupted or lost if battery power drops below a certain level. When
this happens, you must perform the RESET operation to restore normal operation. Note that the
RESET operation clears all data from memory. Because of this, you should be sure to keep written
copies of all important data to avoid losing it due to low battery power.
4. RESET OPERATION
You should perform the RESET operation whenever you want to initialize the calculator.
The procedure described here clears all memory contents. Never perform this operation unless you
want to totally clear the memory of the calculator.
If you need the data currently stored in memory, be sure to write it down somewhere before per-
forming the RESET operation.
• To reset the calculator
to display the Main menu, and use the cursor keys to highlight the RESET icon. And
to reset the calculator, or
to abort the reset operation.
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