We just replaced the #4 imaging unit for our Phaser 7500DX printer, and now the images are printing very pink. I think the #4 is the unit for the Magenta, so I can't help wondering if this is related. It's the only imaging unit we have, so I can't swap it out in case it's bad. Any suggestions? Naturally, we've got a crunch job and our technicians haven't called us back.