Dell 1720dn paper jam error won't go away - Dell 1720dn Laser Printer

SOURCE: Paper Jam error

If it works like the 1700n (I think it does), if you press Continue twice it should light up different lights as a secondary error code. It should tell you close to where it thinks the paper jam is. Check the sensors there, clean them, whatever. If you have a spare printer, or another one, you may try switching out the sensor (takes some tearing apart of the printer) and see if that fixes it.

SOURCE: 1720dn error light will not reset

Follow this link to a previous FixYa post about this error and the suggested solution.

SOURCE: Paper jammed (Dell lase Printer 1720dn

Open the back cover and look for paper wrapped around a roller back there. That is the most common cause of the issues with this machine. The other thing you can try is to push down on the little flaps where the paper comes out of the printer. These get stuck and need cleaning/replacement all the time in the later life of these models (1720's).

SOURCE: My Dell 1720dn constantly has paper jams. A

here's one for you. if it is jamming with one sheet almost out (the trailing edges is just out of the fuser. it will also jam the same way everytime. you might try a different brand toner cartridge. I have beening fixing several with this.