While you wait for answers, we may have found some information which could help you.
Success
Message
Why does the error code E1 show on screen and high pitched?
My Samsung ER 650 screen is black?
how can i fix my Samsung ER290 cash register?
change tax for er4940 samsung?
clear E3 error code on samsung er-290 cash register?
How can i clear extra lines appearing on screen?