My Epson ET-2750 has recently developed a problem. When I try printing it either feeds 2 blank sheets of paper through then a third page starts to feed through but stops part of the way and the printer states there is a paper jam. When it does decide to print or I am copying a document it seems to start printing before the paper has been fed through and as a result there is no margin at the top part of the page. Can anyone enlighten me as to how I can rectify this problem.