This 74.6 KB PDF carries the code 16YQ030C and is listed as a schematic, although nothing in the name points to a laptop, board number or revision. The code fits International Rectifier Schottky rectifier numbering, where the digits after the letters usually denote the voltage grade. The document is therefore most likely a component datasheet. Use it in any PDF reader to read ratings, polarity and package drawings when checking or replacing a diode, after verifying the marking on the real part.
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.