> -- Change cirquitboard slide switch to opposite position. (Away from VR1) --
> Does this mean up or down, because in my PS VR1 is left from the switch.
>Maybe
> they mean from the letters VR1?
Substitute "CN12" for "VR1" and things should be clearer. The regular
tuning is done with the switch AWAY from the connector.
> -- Play C6 and adjust VR11 to 0 cent --
> Compared to what must it be 0 cent.
Well, to C of course. Just connect a regular (electronic) tuner to the
output of the Polysix and observe it. Alternatively you can connect your
scope to the "SIG OUT" test point (TP1).