Sharp EL-5250, EL-5230 operation manual Appendix

Contents
Appendix	115
Battery Replacement	115
Batteries used	115
Notes on battery replacement	115
When to replace the batteries	115
Cautions	116
Replacement procedure	116
Automatic power off function	117
The OPTION menu	118
The OPTION display	118
Contrast	118
Memory check	118
Deleting equation files and programs	119
If an Abnormal Condition Occurs	119
Error Messages	120
Using the Solver Function Effectively	121
Newton’s method	121
‘Dead end’ approximations	121
Range of expected values	121
Calculation accuracy	122
Changing the range of expected values	122
Equations that are difficult to solve	123
Technical Data	124
Calculation ranges	124
Memory usage	126
Priority levels in calculations	127
Specifications	128
For More Information about Scientific Calculators	129

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