Casio CFX-9970G - Manual (Page 39)

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5. When you keep having problems…
If you keep having problems when you are trying to perform operations, try the
following before assuming that there is something wrong with the calculator.
k Get the Calculator Back to its Original Mode Settings
1. In the Main Menu, select the RUN icon and press w .
2. Press ! Z to display the set up screen.
3. Highlight “Angle” and press 2 (Rad).
4. Highlight “Display” and press 3 (Norm) to select the exponential display
range (Norm 1 or Norm 2) that you want to use.
5. Now enter the correct mode and perform your calculation again, monitoring the
results on the display.
k In Case of Hang Up
• Should the unit hang up and stop responding to input from the keyboard,
press the P button on the back of the calculator to reset the memory. Note,
however, that this clears all the data in calculator memory.
k Low Battery Message
The low battery message appears whenever you press o to turn power on or
m to display the Main Menu while the main battery power is below a certain
level.
o or m
↓
About 3 seconds later
If you continue using the calculator without replacing batteries, power will auto-
matically 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 once the low
battery message appears.
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