Casio 3950P User's Guide download pdf (Page 48)

E-46

Technical Information

kWhen you have a problem......

If calculation results are not what you expect or if an error occurs, perform

the following steps.

1. Press A B 2(Mode) < to initialize all modes and settings.

2. Check the formula you are working with to confirm it is correct.

3. Enter the correct mode and try performing the calculation again.

If the above steps do not correct the problem, press the 5 key. 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.

kError Messages

The calculator is locked up while an error message is on the display. Press

t to clear the error, or press e or r to display the calculation and

correct the problem. See “Error Locator” for details.

Math ERROR

•Causes

•Calculation result is outside the allowable calculation range.

•An attempt to perform a function calculation using a value that exceeds

the allowable input range.

•An attempt to perform an illogical operation (division by zero, etc.)

•Action

•Check your input values and make sure they are all within the allowable

ranges. Pay special attention to values in any memory areas you are

using.

Stack ERROR

•Cause

•The capacity of the numeric stack or operator stack is exceeded.

•Action

•Simplify the calculation. The numeric stack has 10 levels and the

operator stack has 24 levels.

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Casio 3950P User's Guide Page 48