Procedures to follow in servicing Hp DeskJet 1050 Printers

I bought Hp DeskJet 1050 Printer last year around November 15th, 2014 for my office use. I realized just last month that the printer could not print out my document. I checked the ink levels in the cartridge just to check if that is the cause. I also did check the kind of paper I inserted in the printer thinking that could be the cause but all proofed to be not the cause. I suspect the roller that picks the paper to be the source of the error in printing. I wanted to know if you can help me in servicing this.
