The Sharp EL-531V is a scientific calculator with 12 digits precision and formula input logic. It has an LCD (liquid crystal) display. The power source is 2xLR44.
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-531V that is no longer working, you can first try replacing the 2xLR44 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: