HP DesignJet 750C+_Only Print Black 7 Red

	HP DesignJet 750C+_Only Print Black 7 Red by lgoldman (11/20/09 1:53 PM) reply	+ / -
Hello all. We have an HP 750C+ 36" Designjet that was taken from a working Environemnt. It was used to print black only It only Prints Black and Red - Blue and Yellow do not print The start-up slef-test asks to lift the lid, and thedisplay shows that all four squares are full, but the square second from the left, which represents the slot with the blue cartidge, is flashing. all the color artrdiges have been replaced, and the contacts in the carriage cleaned. Any ideas? thanks, Lee