Denon MC7000 Jog Wheel slightly grinds....How to fix it?

One jog wheel grinds slightly when turning. It works, but you can hear and feel a slight resistance. Do you have any tips as to why this could be or how I can repair it?

Could it be that there is simply a coarse speck of dust in there? Unfortunately, I haven’t found any instructions on the Internet on how to remove the jog wheel to clean it.

Hey Malte, did you find a solution? Mne is doing the same now.