Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Brother printer 420CN

Product was slow in arriving. When it did arrive, it had no documentation,invoice or any information about contacting the shipper.Shortly after stsarting to use it, it gave a message "Paper Jam, open back cover and clear".There had been no printing.Have not been able to clear the message, or use the printer.Have written a letter to the address shown on the shipping label. Have not heard anything.John StevensPurchased at Amazon