Besides the fact that it is fun to say “Pneumatic schematic” 
, does anyone know where a Pneumatic schematic would be located? 
For what? Do you need a layout of a possible charging system, or the layout of the regulators and solenoids?
I didn’t find a recent one quickly, but following links starting from the FRC kit of parts page got me to the 2008 Pneumatics Manual. Is page 13 of that document what you’re looking for?
Team 358 has a wealth of info here: http://team358.org/files/pneumatic/