Hi! I'm about to change the diaphragm in a 075 and the only marking I can see is a black dot. The old one has both a red and a black dot. So, the black dot side to the black connector or...?
Hi! I'm about to change the diaphragm in a 075 and the only marking I can see is a black dot. The old one has both a red and a black dot. So, the black dot side to the black connector or...?
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