It sounds like you are not logging on to the machine before you use it.
Make sure you enter a clerk number and then press ID ON/OFF button. The default clerk number is 1
-----------------------------------------------
If anyone needs a Towa / Geller AX-100 manual, c-tech has them here:
http://the-checkout-tech.com/manuals/cashregisters/towa1.php
Registerman
December 2010