Below are some steps to help you troubleshoot your printer:

1. Verify that the paper tray is loaded with paper.
2. Check the paper settings for the tray in your printer's settings and make sure the correct paper size is selected.
3. Make sure two-sided printing is turned off.
4. Verify that the paper is flat and the edges are lined up correctly.
5. Check for any paper jams and clear them.
6. Make sure the paper rollers are clean and free of dust.
7. Check your printer's software functions for any errors.