Everything you EVER wanted to know about the F40PH:

Official F40PH Operator's Manual - Amtrak units 200-229
Three parts:
http://www.rr-fallenflags.org/manual/f40-om1.pdf
http://www.rr-fallenflags.org/manual/f40-om-s2.pdf
http://www.rr-fallenflags.org/manual/f40-om-s3.pdf
Official F40PH-2D Operator's Manual - VIA Specific:
http://www.rr-fallenflags.org/manual/f40-viaom.pdf
And for the die-hards / mechanical nerds (like me), the F40PH service manuals:
http://www.rr-fallenflags.org/manual/f40-mi.html (couldnt get any chapters to load on this one, might just be me...?)
http://www.rr-fallenflags.org/manual/f40-sm.pdf
While I dont have any hopes that RSC will model even 5% of the systems (aka these wont help you drive), its still interesting to learn more about a locomotive.