Another copy of the ASUS K53SV laptop schematic, the same 593 KB size as the other file for this model, so it is most likely a duplicate. The name does not state a board number or revision, so confirm the PCB version against the drawing title before measuring against it. The diagram is useful for tracing power rails from the DC jack through to the processor and graphics regulators, locating fuses and MOSFETs, and narrowing down which component is responsible for a short. It opens in any PDF viewer.
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 @hrtechno. 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.