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clear E3 error code on samsung er-290 cash register?
samsung er150?
change tax for er4940 samsung?
How do I get the register key to turn to "P" for updating the sales tax?
Why does the error code E1 show on screen and high pitched?
samsung 4615 cash reg ?
my samsung er-150 cash register makes a high pitched alarm sound on switch ?
cash registers ER-4615?
How do I clear an error code pp?
On screen is 'PCo' and nothing is functioning, how to correct?
does not print full amount on till entry?
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