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Little screw on CP7 (purpose)


#1

What is the purpose of that little screw on back of the CP7?


#2

Is it safe to ground it for any possible electrical radiation?
I have a problem: https://www.ghielectronics.com/community/forum/topic?id=12065


#3

I am almost sure it is made just for that. Can you try it and let us know.


#4

I thought it was to keep the magic smoke in.