Second copy of a schematic for the Acer E1-472, marked EA40-HW with the number 12243, same 1.16 MB size as the original, so it is most likely an identical duplicate. The PDF supports diagnosing no-power, no-charge or no-display faults by showing which regulators generate each rail and how enable signals chain together. Read it in any PDF reader with net-name search. Confirm that the board marking on the PCB corresponds to this project before relying on component values or reference designators.
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 @laptopbios21. 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.