WC7535 Not Printing in Color

Anyone have problems with 7535's not printing in color?

We have a few that will sometimes only print in black & white. Everything is set to print in color but the output will be B/W. Even the internal test prints come out in B/W. Once you reboot/power off/on it will print in color again. No error codes are logged when it happens, one of the printers has had the SBC, Software Module replaced and been Forced AltBooted several times. None of that has helped.

Any ideas are appreciated!



Thanks