The other day I ended up using the "Sky Blue" button inside the Hitachi 57swx20b.
I had to because I had forgot to initialize the data sensors before turning off the TV after a manual convergence in service menu. After doing this however, it didn't seem to "break" anything... it allowed me to then initialize the data sensors...
Did I screw something up that I am not aware of? The convergence on the service level convergence still looks right. (and the geometry).