20 Most Recent Sharp ER-A420 Cash Register Questions & Answers

Ther is a possibility that your machine was operating on training mode. In this mode , no memory is kept

Check and see if you assigned it as a PLU or as a department or as a group. Go for department

I could help if you were a bit specific about the problem

do an initial reset and restart

Check you keyboard if there isn't any key that is stuck down

If its feeding paper but not printing, make sure that you are using the correct thermal paper and that there is no extra bits of paper stuck under the printing head. Otherwise it might need a replacement printing head. If its not feeding the paper at all, then make sure that the receipt is turned on.

More information required. Please provide the model number of the cash register and the transaction that wont clear?

Initial re-set