I am not sure about the difference between the Beolit 600 and 700, and am not even sure which model exactly is mine. The last button is marked AFC.
I noticed that the service manual of Beolit 600 is more detailed on some aspects. For example the length of the tuning three is documented 82cm, as well as the number of turns. So I don't need any help on the mechanical side any more.
JP