Hello shoaib.alvi,
Please take a look at this article it talks about when a tray will not go back into the printer. If you are still having issues after trying these steps, I suggest that you call into our support department for assistance @ 1-800-835-6100.
I am facing issues trying to push the paper tray all the way back in. My wife opened the tray to take a couple of papers out and says she had to pull on it a bit hard as it seemed stuck. Anyhow now it won't go back in. I have tried solutions given on this forum that I could find; dont think the tray is broken and the paper remain locked down as well. I am just wondering if the printer is broken as I can see a small paper feeder dropping down inside the section where the tray goes. Is that normal? (see second pic below)Printer section where the tray slides in - there is paper feeder dropping low (circled in red) and that could be causing the tray from reaching all the way to the back? Is the feeder supposed to look like that when the tray is out?