Got a little-used Canon MF4150 laser all-in-one that has worked fine for 16 years but has just started double feeding supply paper.
It picks up and starts to feed the first sheet--then a half-second later, pulls a second sheet in which causes a jam and error light coming on.
Tried several different kinds of fresh 20 pound paper fanned and stacked properly, pickup roller looks/feels clean..
Printer works fine if I only load a single sheet in either the main paper bin or the single sheet feed slot.
If you have already cleaned any of the rollers by wiping them with a damp cloth and have checked the printer for any obstructions, the issue looks like a problem with the hardware. We would be happy to assist with the issue. To provide some feedback or some troubleshooting steps, we would need some additional information. If you could reply to this message with the information below, we can provide some assistance.