Solar Panel Board
This is a simple PCB used to carry the solar cells and connect them to the satellite. There may be some difference between faces, mainly slots for ports and similar. Please check and see which face you are working with.
The documentation for the BIRDS3 version of this board can be found here. The documentation for the BIRDS4 version of this board can be found here.
now that you know all you need to know about the subsystems, find out what elese is important to note before you start designing and building.