While you wait for answers, we may have found some information which could help you.
Click here for Problem Second Cash RegisterNADA but Error mess.Changed the batteries in my Sharp ER-A330 Cash Register?
Sharp xe-a137?
Sharp cash register XE-A102 frozen keyboard?
How Can correct the REG error for Sharp XE-A506?
Mend Er-3110 cash register?
How can I fit me sharp XE 203 cash machine?