While you wait for answers, we may have found some information which could help you.
Click here for Find User Machinehow do i change the time on olympia 721 cash register?
How to fix my Olympia CM701?
how remove password on olympia cm721 plus?
how to set time and date on olympia CM726?
Replacement Keys for Olympia S2200 register?
Typo in cash register - po 15150 iso 150?