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How do I get the register key to turn to "P" for updating the sales tax?
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how can i fix my Samsung ER290 cash register?
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I need to reset my Samsung Cash Register?
Operator's Manual - Samsung ER-290 Electronic Cash Register?
clear E3 error code on samsung er-290 cash register?
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cash registers ER-4615?
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On screen is 'PCo' and nothing is functioning, how to correct?