I have a arduino UNO v2 SMD. Does anyone know of a source for the schematic of this board?
http://arduino.cc/en/uploads/Main/arduino-uno-schematic.pdf
The SMD uno and through hole UNO should have exactly the same schematic, only a slightly different PCB design. More info can be found under "Uno" in the hardware section.
Onions.
The Uno SMD files are on this page: http://arduino.cc/en/Main/ArduinoBoardUnoSMD
Do note that this isn’t the latest revision. There have been layout changes done since that file was created/picture was taken.