To access the printer utility on MAC OS you simply select the printer through your Preference/Printers, then select Options & Supplies, then Utility, from there you can run the Nozzle check (manually) as to not waste any more ink then need be.
I have a couple questions to start:
1.Has this printer been maintained with regular cleaning of the Capping Station, Wiper Blade and Bottom of print head?
2.How long does it sit unused with Pigment inks installed?
3.Did you use the vacuum method to fill the cartridge included in the instructions?