Schematic PDF, 798 KB, labeled N4030 UMA, meaning the variant using integrated graphics with no discrete GPU. The name gives no board number or revision, so identify your board carefully; a discrete-graphics version would differ in its video section and power rails. Use the diagram to trace power rails, locate the charger and regulator circuits and follow signals to connectors. Compare the board markings with any number shown in the document title block before working from it, as similarly named models can use different boards.
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 @pepeelectronica. 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.