Hello. My name is Michael. I can help you with your question if you still need assistance.
One thing you can try to clear the jam - unplug the printer, then with card stock or something similar - meaning a full sheet of it - push it through the paper path in the regular direction of the paper. This should dislodge any jams. Then turn the printer over and give it a shake to make sure nothing is left in there , and then try the printer again.
Although I don't suspect this is the issue here - performing a roller cleaning may resolve the issue. It is a step that you should try if all else fails. To do this, please turn off the printer, unplug the power cord from the back and leave it out for at least 10 minutes, then plug it back in and turn it back on. Next, please follow the steps located here to perform a roller cleaning.
If you still experience the same issue after performing the roller cleaning at least three times, or if you are unable to perform the roller cleaning due the error, cleaning the timing encoder strip of the printer may resolve the issue. To do this, please follow the steps locatedhere.
Should you continue to experience difficulty, the printer may require servicing.