Core voltage for the main CPU (MSD6486XTAT). 1.5V or 1.8V DC: DDR RAM supply. B. Backlight Driver (LED Driver)
Here is a real-world repair sequence guided directly by the schematic: tp.ms6486t.pb753 schematic
You will find dozens of forum posts asking for tp.ms6486t.pb753 schematic . You will find almost zero genuine replies with an actual PDF. Core voltage for the main CPU (MSD6486XTAT)