How to fix error code E39 (reg. valid) Sam4s ER-5200m?
My cash register beeps and displays warning reg. valid (E39 error code) How can I fix this problem. I have already performed the initial clear, but it did not fix the problem.
It sounds like someone has programmed it to require validation before continuing. Turn off validation in programming. If you need a manual, there is one here:
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