Sixtrack Problem toggle tune test

Sixtrack Problem toggle tune test
« on: February 22, 2021, 09:09:35 AM »
Dear community,
I hope you can help me. The six track I have was very out of tune. So I pressed the command for Tune toggle test ( Hold record +8) , Which is supposed to be used by service technicians only. Unfortunately I read that later on. Now I don’t get any sound out at all. Can anybody help me? Or give me advice where I can find help? Thank you so much, J