Texas Instruments BA-35 Quick Reference Guide - Page 37

In Case of Difficulty If you have difficulty operating the calculator, you may be able to correct the problem with the solutions suggested in the table below. Observation Display is blank; digits do not appear. A function does not seem to work. The number of decimal digits that you expect is not displayed. An error occurs. Action The display goes blank during a long calculation. Wait for it to finish. Be sure the solar power cells are exposed to an adequate light source. Be sure the calculator is set for the correct mode- profit margin, FIN, or STAT. Be sure the display is set to the correct format- floating decimal or fixed decimal. Check the error conditions listed on pages 35-36. If you experience difficulties other than those listed above, press u to clear the calculator, and then repeat your calculation. Review the operating instructions to be sure that you are performing the calculation correctly. 37