Catalogued as a schematic, this 209 KB PDF is labelled 85CNQ015, a code that reads like a power semiconductor part number rather than a laptop board, so it is most likely a component datasheet. The CNQ letters follow the naming style once used by International Rectifier for dual Schottky rectifiers. A technician would use it to check pinout, package outline, forward voltage and reverse ratings before fitting a replacement. Compare the marking on the actual part with the document before trusting the figures.
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.