Instruct: Classify a given Amazon review as either positive or negative.
Query: Had to return - defective

Seemed easy enough to set up, but when we got to entering the PLUs, the machine got caught in a "printing loop" and just kept printing on both receipts with the PLU numbers and nothing else. The only thing that would stop the printing was to turn the machine off, but when re-started, it picked up where it left off and printed several yards of useless tape before we packed it up and returned it.Looked like a decent machine and perhaps we just got a bad one. But having to pay $42.16 to return a defective machine was a real negative for the machine and the vendor.