If you are getting smudges on your prints, you can try reseating the toner and then cleaning the fixing assembly using the steps in the link HERE. While the toner cartridge is out of the printer, you can check the inside for any spilled toner powder that you can wipe up with a damp cloth.
If you continue to have issues after reseating the toner and cleaning the printer. It looks like the printer needs service. You can contact our support team at 1-800-652-2666. Our agents would be happy to help with the hardware and provide any service options.