Appendix A: Batteries and Answers to Common QuestionsII
7. I n ser t t h e o t h e r n ew ba t t e r y, making sure that the positive sign (+) battery is facing
outward.
8. Replace the battery-compartment lid.
9. Press =.
If the calculator does not turn on, follow the procedures below.
Determining if the Calculator Requires Service
Use these guidelines to determine if the calculator requires service. If these procedures confirm
that the calculator is not functioning properly, refer to the Warranty, Environmental, and
Contact Information located on the product CD.
The calculator won’t turn on:
This condition most likely indicates that the batteries have run out. Install new batteries.
If the calculator still does not turn on when you press O:
1. Reset the calculator (see below) and, if necessary,
2. Erase the memory (see below).
The All Clear message should now be displayed. If this is not the case, the calculator requires
service.
Resetting the calculator:
1. Turn the calculator over and remove the battery cover.
2. Insert the end of a paper clip into the small, round hole located between the batteries.
Insert the clip gently as far as it will go. Hold for one second and then remove the clip.
3. Press =.
4. If the calculator is still not responding, erase the memory (see below) and repeat steps 1
to 3 above one more time.
Erasing the calculator’s memory:
1. Press and hold down the = key.
2. Press and hold down the
Ù and then the É key so all three keys are pressed
simultaneously.
3. Release all three keys.
Memory is cleared and All Clear should be displayed.
The calculator doesn’t respond to keystrokes:
1. Reset the calculator (see above) and, if necessary,
2. Erase the memory (see above).
The All Clear message should now be displayed. If this is not the case, the calculator requires
service.
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