Customer is getting an Error related to problem with fuser They didnít write down code but were told it was a fuser error. I got there and it was in a fuser jam error. Cleaned fuser entrance paper sensor and machine worked for A few days. They called back and said same error. After I asked them to lmk what it was , they said it said a jam indicated now. The error went away and it is registering a jam. Just like last week. So I have to go back but Iím not familiar with this unit and I wanted to know if someone here can give me a direction to look into. And the service mode procedure. Thank you