Restart And Reset; Power Supply - Casio FX-9860GII SD User Manual

4. Restart and Reset

Restart
Should the calculator start to act abnormally, you can restart it by pressing the RESTART
button. Note, however, that you should only use the RESTART button only as a last resort.
Normally, pressing the RESTART button reboots the calculator's operating system, so
programs, graph functions and other data in calculator memory is retained.
Important!
The calculator backs up user data (main memory) when you turn power off and loads the
backed up data when you turn power back on.
When you press the RESTART button, the calculator restarts and loads backed up data.
This means that if you press the RESTART button after you edit a program, graph function,
or other data, any data that has not been backed up will be lost.
Reset
Use reset when you want to delete all data currently in calculator memory and return all
mode settings to their initial defaults.
Before performing the reset operation, first make a written copy of all important data.
For details, see "Reset" (page 12-3) in the separate Software Version 2.00 User's Guide.

5. Power Supply

This calculator is powered by four AAA-size (LR03 (AM4)) batteries.
If the following message appears on the display, immediately turn off the calculator and
replace the batteries as instructed.
RESTART button RESTART button
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fx-9860G fx-9860G SD SD
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fx-9860G fx-9860G
fx-9860G AU PLUS fx-9860G AU PLUS
II II
fx-9750G fx-9750G
II II
fx-7400G fx-7400G
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