I have the Harmony 700, and when I added the 7600 it actually added the service menu code on it's own. ("In Start") (I just got this remote)
If it actually has a service menu the remote could conceivably do it. My experience has been those type of receivers have a code - sometimes a sequence of up arrows, ff, etc... that is used with the regular remote, my Dish receiver does, and my neighbor's Charter receiver does or even a Roku does. But if you know yours needs a special remote very possible the Harmony can be programmed.
I would use the Cnet settings, which to me make skin as about as good as I have seen, and the overall picture has a feel of a professional calibration. (I did not have a pro one done to this TV, but have in the past) Then make the minor adjustments with the calibration blu-ray. (Not on a DVD and not on a DVD player) There are others out there, I was happy with WOW it really does what is needed. It suggested minor adjustments to the Cnet settings, but the color bars were exactly correct with the Cnet settings.
That should more than be good until you get a pro calibration if you are getting one. I decided this time because I am happy with the picture to go a different direction and instead of a pro calibration, get the amazing Darbee. But I am sure a pro can get even more out of the TV, they usually can.