Casio FX 7400G User Guide - Page 12

Chapter 1 Getting Acquainted 7. 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. P.6 5. Now enter the correct mode and perform your calculation again, monitoring the results on the display. k Low Battery Message The low battery message appears while the main battery power is below a certain level whenever you press o to turn power on or m to display the Main Menu. o or m ↓ About 3 seconds later P.196 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. 12