Hello -- our lightly used TR8620a had a paper jam a week and a half ago. Ever since we cleared it, it stopped printing from the lower front tray. We have indicated in our printer settings -- print only from this tray -- not the back -- and when we try to send the job to the front tray, we hear a grinding sound and if we are lucky a sheet of paper will get stuck along the bottom of the printer and jam. Printing from the back feeder, which is inconvenient, especially when we have a lot of pages, is not why we bought this unit. Any fixes? It's been troublefree until now. Only 18 months old.
