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how can i fix my sam4s er420m?
sps1000 non preset key use?
Our Sam4S ER5100 has high pitched noise on switch on?
How to fix it?
Programming SAM4S cash register till receipt?
VAT rate change?
How can I mend ER-5240M?
Register Closed?
How to program % discount on Sam4s ER-5200?
How to fix error code E39 (reg. valid) Sam4s ER-5200m?
How do I clear the memory on my SAM4s ER5115II cash register?
My sam4s Er-5200 sequence error will not go off ?