How To Reset Casio Calculator Mj-120d Plus Jun 2026

use a small, pointed object (such as a paperclip or a pin) to press the Reset/Memory Clear button located on the back of the device

A small Phillips-head screwdriver (#0).

Use a thin object, like a paperclip or pen tip, to press and hold the button for a few seconds.

Standard Support

Platinum Support

General review of the issue

Access to knowledge base articles

Email support communication

Regular product updates and fixes

Dedicated account team

Priority Email Support with unlimited communication

Priority bug review and updates

Option for quarterly briefing call with Product Management

Feature requests as priority roadmap input into product how to reset casio calculator mj-120d plus