Datasheet-sized PDF, 46 KB, listed as a schematic for the part 2PA1774J, with the trailing 2 most likely a document revision. The J suffix usually distinguishes a package or grade variant, so compare it against the related 2PA1774 sheet before treating them as interchangeable. A technician uses this kind of file to identify pins on a tiny SMD device, check ratings and look up the marking code printed on the body. Open it with any PDF viewer; it contains no board-level circuit for a specific laptop or device.
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.