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How to program % discount on Sam4s ER-5200?
Programming SAM4S cash register till receipt?
How to fix error code E39 (reg. valid) Sam4s ER-5200m?
sam4s er-290 cash register ?
how can i fix an error E1 on sam4s?
My sam4s Er-5200 sequence error will not go off ?
How to remove E1 on Sam4s ER5115, key is turned on err occurs?
My sam4s ER-180UB displays read what does this mean ?