The Sharp EL-506D is a scientific calculator with 10 digits precision and algebraic logic. It has 112 functions, 44 keys, and an LCD (liquid crystal) display. The power source is 2x1.5V cell.
Facts at a glance:
|Power Source||2x1.5V cell|
Note that diagnostic tests generally delete any data on the calculator. Be sure to back up any important information held in the calculator before running these tests.
Switch calculator off, then hold 2ndF and right parenthesis keys and press ON key.
If you have a Sharp EL-506D that is no longer working, you can first try replacing the 2x1.5V cell batteries. If that doesn't solve the problem, then you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement: