While you wait for answers, we may have found some information which could help you.
Click here for Keys Register Cash LostTypo in cash register - po 15150 iso 150?
how remove password on olympia cm721 plus?
olympia CM 812 ?
how do i change the time on olympia 721 cash register?
Where can I buy parts for Olympia CM220 Cash Register?
Where can I source a spindle for an Olympia CM1810+ cash register?