Just recently, we purchased a secondary 500 sheet paper tray for a LaserJet 4200N. Now, both trays are letter size and loaded w/ different colored paper (1 for certain reports and the other for anything else). When I send a print job to a specific tray, I want to print from that tray only. In other words, when that tray runs out of paper, I do not want the second tray to take over and resume the job, I want an error to show up on the lcd. I've set one tray to a different paper type, but it didn't help. Any help will be greatly appreciated. Thanks for your time.