Hello, I just purchased a second hand CC121 and want to clean the device. Those who have one, how do you go about it? Can I unscrew the lid and clean between the keys or should I only clean the top?
Thanks 
Also, props to Steinberg for still supporting it on M1!
I’ve never tried that. I used a can of compressed air to blow out around the keys and in the groove of the slider after brushing the surface thoroughly. Also, use a brush attachment on my vacuum to clean the surface.
Lightly wet cloth will do the job. It is the only thing I use to clean mine over the last 12 years
Thanks, I’ll try that first!