how can i print pdf doc

Hello
using my spare time to start learning 4.0, I ran into a basic and unexpected difficulty:
I tried to print portion of the pdf doc for off screen reading.. [ I have the 3.5 book but 4.0, as an update, was shipped to me without new books].

The bottom line is that picture print fine but text is not printed at all [ I got blank page after blank pages...
so here are my question
is it a non conventional built in protectionto prevent printing these files?
if not, how can i print pages of these pdf?

Thanks..
JF