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On screen is 'PCo' and nothing is functioning, how to correct?
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Operator's Manual - Samsung ER-290 Electronic Cash Register?
clear E3 error code on samsung er-290 cash register?
Samsung er4615 closed?
How do I get the register key to turn to "P" for updating the sales tax?
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change tax for er4940 samsung?
I need to reset my Samsung Cash Register?
Samsung ER 4915 not working?
How do I mend Samsung ER4615?
closed message? samsung er-4615?
My Samsung ER 650 screen is black?
Why does the error code E1 show on screen and high pitched?