Chasing the Sony CX20084 speed chip for D6C walkman

One thing that catches my attention is how this circuit is powered (missed this detail in LeKos schematic, but see it is there too): it's using the +11.2V rail from the DC-DC convertor and regulate it down to 5V.
The motor draws ~100mA with load, not sure if that DC-DC can actually supply that much extra current (without significant ripple) since it wasn't designed to power the servo or the motor, but just audio circuitry.

I think it's a better idea to power it directly from the 6V rail with some protection which has to be low-dropout given minimum supply voltage of BA6301 is 4.5V.

As for the FF/REW auto-off, that has to remain.

Wonder if the other Chinese replacement (https://www.goofish.com/item?&id=766454209480) is also based on the BA6301.
In this case only the IC is powered through a regulator from the 11V rail, not the motor.