Beamer302
Active Member
Hi all, I am working on a Marantz 2220B and I want to know the trimming capacitor layout that is on top of the tuning capacitor . I believe that starting from left to right the first ,third, and fifth trimmers are for FM . Which one is for the RF circuit. Which one is for Antenna. The one on the far right is soldered and I am guessing that is an oscillator trimmer . Also in step 3 of the FM alignment instructions on the service manual it says to adjust trimming capacitor C118 after tuning to 109MHz with FM signal generator. Where the heck is C118 ? I have included a picture of the 2220B tuning capacitor.