Technical Information
When you have a problem.
If calculation results are not what you expect or if an error
occurs, perform the following steps.
1. Press
2(Mode)to initialize all modes andsettings.
2. Check the formula you are working with to confirm it iscorrect.
3. Enter the correct mode and try performing the calcula-tion again.If the above steps do not correct the problem, press the
5key.The calculator performs a self-check operation and
deletes all data stored in memory if any abnormality is
detected. Make sure you always keep written copies of all
important data