User Manual

15.ENG
Error Conditions
The display shows E when an error occurs or when you
attempt certain operations. Press - to clear an error
condition.
In Case of Difficulty
1. If the digits fail to appear on the display:
¦ Check to be sure that no part of the solar panel is
covered.
¦ Check the intensity of the light source. The light
may be too dim to operate the calculator.
2. Press + and try the calculation again. Review the
operating instructions to be certain the calculations
were performed properly.
3. Press +, ` 4, and r to reset the display
and prepare the calculator for use.