Digitech RP90 PCB, SW20

[dobrota]

I replaced switches SW19 and SW20 for change sound preset up / down because they worked only randomly.
SW19 is OK now, but unfortunately some trace from SW20 pin near C5 / IC was damaged during SW20 replace, it doesn't work now and I can't find which trace a have to repair. Please has anybody PCB picture near SW20 or schematic of this effect ? I thank at advance