Rick:
Thanks for your speedy response which unfortunately did not work! I have tried using the select all ink button...the printer will print PDFs but not doc or docx files without selecting the 'use colour cartridge' rather than both cartridges or black only.
the P713W printer does not have the "complete-a-print" selection: you took this from a 964 printer which obviously has different choices.
I am still stuck!
Regards Stephen