The name 3LP01S identifies this 28.1 KB PDF only by a component-style code with an S suffix; no laptop, board number or revision appears. Although filed as a schematic, a file this small is most likely a short part sheet. Repair technicians open such PDFs in any reader to look up pinout, voltage and current limits and the package outline, useful when a small part on a rail is shorted or burnt. Compare the printed code and suffix on the board component before choosing a replacement from 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 @cyberlanelectonik. 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.