Hmm, nothing about the inner workings of the chip though... Keep searching.
Although this will be helpful for those who have some sort of hardware problem with their player and want to service it.
Nothing about the ACU series chips though? I have an ACU7513-based player.
Ah, and... Just upload the PDF file at a file hosting service, like www.mediafire.com
and link to it. It would be easier to read.