How to change Logo on Uniwell NX-5400?

The Uniwell machines are very rare and you usually need to use codes from the manual to set the lines. I have only done a few of them and it would not have been possible without the codes. Suggest you get a manual to program these. You can find them on the net such as at Checkout tech

https://the-checkout-tech.com/manuals/cashregisters/Uniwell1.php

Hope that helps. If it was a simple register, you might get away without it but Uniwells are notorious for having page type key layouts that are not intuitive without a manual

Registerman
January 2018