When I print from a Mac Pro (Early 2008) running El Capitan (10.11.6) to a HP 4730MFP, all my color prints come out black and white. However when I print from my Lenovo running Win 10, they print just fine in color. The print driver for the machine is PCL v5.1. Somehow I feel the driver is not translating properly on the Mac side. I called MAC and they said they no longer support drivers for that machine. When I reset the printing system and re-add, it won't even work if I select the apple driver from the software drop down list. It gives an error code 49.4C06. It only works when I select the PCL Generic driver which unfortunately does not have the option to print in color.
Is there a workaround? Maybe a third party app that would work?