I just bought a CP 30 off Facebook market. It has a few dead keys and I’m wondering what would be the best thing to check first. I’ve never worked on anything like this. I also want to know how I can get my hands on a repair manual for this model.
Thanks!
These are old style metal contacts I think. If so, clean the corrosion with a pencil eraser or if that isn’t adequate use #2000 or finer emory paper. Then apply contact enhancer. If the contacts are a “leaf spring” type use emory paper to avoid bending the contacts.
May be contacts or may be electronics - check the manual below