While you wait for answers, we may have found some information which could help you.
Click here for Change Tax RateTypo in cash register - po 15150 iso 150?
how to set time and date on olympia CM726?
How can I change the date on a Olympia S2200 cash register?
how do i change the time on olympia 721 cash register?
Replacement Keys for Olympia S2200 register?
how remove password on olympia cm721 plus?