I will first start with the bottom side of the board which is mostly dedicated to power supplies generation and distribution.
On the following picture I've outlined various sections :
First we have the power supplies dispatchment which is mainly creating several supplies plans from the initial supply, starting with a ferrite bead which can serve as a fuse, some filtering with a inductor and a big output capacitor.
Secondly, there are secondaries voltages generated with regulators which are located in regulator sections 1 and 2.
And finally, a BA5888FP motor controller chip.
I will provide, as I finished them, analysis and schematics for these 3 sections.
A) Power supplies dispatchment
Here is a close up of the power supplies plans and components :
Here is a close up of the regulator components :
Next is a design taken from the TPS64201 Step down controller's datasheet, which is implemented by SONY on the board :
Schematics available as soon as I edit them !
Coming soon .....