Schematic PDF, 7.27 MB, labelled P6-U06 with a website tag appended to the file name. The name does not state the manufacturer, so confirm the device from the drawings and the markings on the PCB before relying on it. The size suggests a fairly complete set of pages covering power, charging and peripheral circuits. Technicians use such a schematic to trace rails and signal lines, check expected voltages at test points and identify the component responsible for a short. Any PDF reader opens it.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @mobileshematic. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.