Building MB-6582; where is R80?!

Sorry for the dumb question, but where the heck is R80 on the MB-6582 base PCB? I’ve been looking for about twenty minutes and feel like I’m going crazy.

It’s between the first and second PIC:

Best Regards, Thorsten.

Doh! What’s it doing there?! 

 

thanks TK, lifesaver as always.