Hey, I pulled a head out of a P6000 that was supposedly good for all channels, but when I installed it in my 7900, the orange and green were mysteriously entirely blank. Several power cleanings and absolutely no nozzles appear. I know at least the Orange channel was working on the old 7900 head.
From what I understand, it is supposed to be the exact same head as the P7000, which is the same as the 7900. It is clearly not using the orange and green because it is designed as a P6000 head, but there must be a way to flash the head firmware or something? I have tried reloading the printer firmware, and even inputting a head rank ID from a 7900, but no luck.
Thoughts?