JVC A-X2 what do these adjustment pots do?

Hi folks, currently working on one of these but don't know what adjustment pots R807/08 do? Not in the manual, I'm assuming maybe wrongly something to do with the meter circuit? But where to measure and what value?
 

Attachments

  • Screenshot_20241211_115725_Adobe Acrobat.jpg
    Screenshot_20241211_115725_Adobe Acrobat.jpg
    306.9 KB · Views: 42