Casio FX-7400GII - SOFTWARE VERSION 2-00 User Manual page 38

Restart and Reset
Restart
Should the calculator start to act abnormally, you can restart it by pressing the RESTART
button (P 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.
RESTART RESTART
button button
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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).
Low Battery Message
If the following message appears on the display, immediately turn off the calculator and
replace batteries as instructed.
If you continue using the calculator without replacing batteries, power will automatically turn
off to protect memory contents. Once this happens, you will not be able to turn power back on,
and there is the danger that memory contents will be corrupted or lost entirely.
• You will not be able to perform data communications operations after the low battery
message appears.
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P button P button
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