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We have 11 questions about mending 'sam4s 290'
Our Sam4S ER5100 has high pitched noise on switch on?
VAT rate change?
Programming SAM4S cash register till receipt?
How do I clear the memory on my SAM4s ER5115II cash register?
Register Closed?
How to fix it?
How to program % discount on Sam4s ER-5200?
How can I mend ER-5240M?
How to fix error code E39 (reg. valid) Sam4s ER-5200m?