While you wait for answers, we may have found some information which could help you.
Click here for Error Changing ProblemSharp drop-A570 not non -tend ?
How can I fit me sharp XE 203 cash machine?
Mend Er-3110 cash register?
Till does not do anything ?
How do I change tax rate on my Sharp XE-A202 cash register?
How Can correct the REG error for Sharp XE-A506?