Small 34.5 KB PDF filed as a schematic and named 78P7200-IH. The name gives no laptop model or board number; it looks like an integrated circuit part number with a package or temperature suffix. The file is probably a component datasheet with pin descriptions, block diagram and application notes rather than a full board schematic. Technicians use such sheets to identify supply and signal pins and measure them on a live board. Confirm the chip marking, including the suffix, matches before trusting the pinout.
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.