Instruct: Classify Amazon reviews into positive or negative sentiment
Query: I really wanted this one to work!!!

Five weeks into owning the Brother MFC-7820N, it started reducing all of my work by 40% and printing a large black margin down the side of EVERYTHING! Brother Customer Support said that "it isn't supposed to do that after just 5 weeks," which makes me wonder, when IS it supposed to do that? They are sending out a replacement printer in two to three days. To be continued...