We all know that precaution is better than cure; it goes with the typical paper jam issue of printers. Paper jam is common issue with printers and your Dell printer is no difference with it. The paper jam is not a technical fault with your Dell printer; it is more as some incorrect use.
A user should know how to correctly placed paper in the paper tray and also, make sure the prescribed quality of paper should be use. This is the prime reason; sometimes a fold paper could be a huge problem for you. Simply, turn off the printer and carefully remove the jam.