My Xerox Phaser 6280DN has run out of magenta and I want to print B/W only for now. I have:
Set Admin > PCL Setup > Colors to Black
Set Admin > PostScript Setup > Colors to Black
Installed the latest Phaser 6280 driver (was using a generic Mac driver)
Change color options in Print window to Black and White when printing
Despite all this, the printer immediately stops after processing and tells me to replace the magenta. I got a few extra prints by gently shaking the toner cartridge, but that trick stopped working. The Phaser driver doesn't actually give me a default color setting.