Printer Repair Questions? Ask IT Technicians for Answers ASAP
Hi and welcome to JustAnswer,Thank you for the question and your patience. Should you still need assistance for information purposes only...Initially, the described symptom almost always point to a sensor fault or false sensing.
Still, proposed preliminary tries (if have not been done) would be to open the back cover then the pull down cover to expose the fuser roller(s) (careful maybe HOT!):
All others would internal thus require partial to full dis-assembly.