While you wait for answers, we may have found some information which could help you.
Click here for Er Clear Keyhow can I change prices?
How Can correct the REG error for Sharp XE-A506?
How do I change tax rate on my Sharp XE-A202 cash register?
Paper Roll problem?
NADA but Error mess.Changed the batteries in my Sharp ER-A330 Cash Register?
Sharp drop-A570 not non -tend ?