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F-28-3 Error on Konica Minolta 7222?

I have a Konica Minolta 7222 - yes, an old bizhub. It was copying fine but i moved it out of my office and made the mistake of storing it in my garage. I assume the humidity messed it up. It has been in my house and away from the extreme humidity for about 4 months. I was hoping that getting it out of the humidity would solve it. Is there an easy fix or do I junk it?
Christine G, August 2019
http://www.copytechnet.com/forums/konica-minolta/26895-konica-7022-f-28-3-error.html

Ghht, August 2019