Before Assuming Malfunction of the Calculator...
Note that you should make separate copies of important data before performing these steps.
1. Check the calculation expression to make sure that it does not contain any errors.
2. Make sure that you are using the correct calculator app for the type of calculation you are trying to perform.
To check which calculator app you are currently using, press 
. This highlights the icon of the calculator app currently in use.
3. If the above steps do not correct your problem, press the 
key.
This causes the calculator to perform a routine that checks whether calculation functions are operating correctly. If the calculator discovers any abnormality, it automatically initializes the calculator app and clears memory contents.
4. Return the calculator settings (except for Contrast and Auto Power Off) to their initial default settings by performing the procedure below.
(1) Press , select a calculator app icon, and then press 
.
(2) Press 
, and then select [Reset] > [Settings & Data] > [Yes].
