On screen is 'PCo' and nothing is functioning, how to correct?
Battery?
clear E3 error code on samsung er-290 cash register?
Memory All Clear a Samsung ER-4615?
How do I get the register key to turn to "P" for updating the sales tax?
Samsung ER-5100?
I can't open the drawer. It has a squeal like a key is stuck?
How can i clear extra lines appearing on screen?
Operator's Manual - Samsung ER-290 Electronic Cash Register?
My Samsung ER 650 screen is black?
Why does the error code E1 show on screen and high pitched?
samsung er150?
Samsung ER 4915 not working?
How do I mend Samsung ER4615?
I need to reset my Samsung Cash Register?
closed message? samsung er-4615?
How do I clear an error code pp?
my samsung er-150 cash register makes a high pitched alarm sound on switch ?