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Our Sam4S ER5100 has high pitched noise on switch on?
ER 420M Sam4s till Error message?
sps1000 non preset key use?
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How do I fix my sam4s cash register ?
Sam4ER-420M won't work?
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Register Closed?
VAT rate change?
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Void mode then power failure? Sam4s er5200m?
Sam 4s Er-420M error?
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