I only tried the codes listed for Pioneer products. I didn't try any of the codes listed for Panasonic TVs.

Looking at the 990 manual, it had Pioneer TV codes. Seems odd that legacy codes would be dropped on new products; are the processors really that tight on memory?

I will try both the Panasonic TV codes listed as well as the old Pioneer codes to see if any of those do anything. If not, next stop will be a Harmony remote.