I have a KM-C 3232 with 35K copies. It list 133 J-11 errors. We checked all the sensors in the path. Swapped a couple out, still no joy. The jams occur at different points along the path. A few were in the fuser. The interesting part is that there is no image on the page or on the transfer belt. Any suggestions?
Thanks for your time.

Have you checked the operation of feed clutch #2? Maybe it is defective, causing double feeding!?

Thanks for the help. Turnes out 3 out of 4 paper feed switchs we have were defective.