Our networked HP LaserJet 600 M601 is intermittently printing from the manual feed tray instead of tray #2. When we send a print job, the only way it will print is if we put paper in the manual feed tray. Powering off and on the printer does nothing to correct the problem. I have updated the drivers. Any ideas on what we can do to get the printer to print from tray #2 all the time?