Reprogramed tax after initializing Sharp ER-A330 now will not accept any sntry

I believe the ER-A330 has a Cashier # button - it should be labeled CASH #. It has to have a cashier signed on to ring a sale. Most owners forget that, because the same cashier stays signed in all the time, and nobody uses the button. If I'm right, all you have to do is this (in REG mode):
[CL] 1 [CASH #]
and start ringing your sale. The CL was to clear the error condition, if it was in one. 1 CASH # assigned Cashier #1 to the register.
The reason the register has the button is so it can track sales totals for each employee or shift. The register can be programed to stick with one cashier until another is signed on, or it can force you to sign on for every sale. At the end of the day it can print the normal Z totals by touching the CA/AT key, and touching the CASH# key gives totals for each cashier, I think.
Initializing the register cleared the cashier assignment and got you into the predicament. Touching the CASH # key twice will also clear the cashier assignment, as will resetting the Cashier totals with a Z reading. In any of those cases, just go back to REG and touch 1 CASH# again (or a different number if you want to sign on a different cashier).