I don't know if you have noticed but it appears to be the same block diagram for all of the models, am sorry I don't trust them and second $30 a pop seems a lot of money, the diagrams are out there some were it is just finding them, there are a few China sites with them unfortunately I can not understand to navigate my way around, i have been going through the manual page by page taking screen shots, in an attempt to get the full thing,
http://wenku.baidu.com/view/273a40eff8c75fbfc77db222.html
if any one can help me load this up in English I would be very greatful