Sharp EL-531L (ADVANCED D.A.L)
The Sharp EL-531L is a scientific calculator with 10 digits precision and formula input logic. It has 43 keys, and an LCD (liquid crystal) display.
Facts at a glance:
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 M+ key and press reset button on calculator back.
If you have a Sharp EL-531L that is no longer working, you can consider replacing the calculator with a modern equivalent. We suggest the following current model as a replacement: