ASUS F9S notebook schematic as a 1.83 MB PDF; the file name gives the model only, with no revision or board number. Compare the title block in the document with the markings printed on the motherboard before use. A technician relies on this diagram to follow rails from the adapter input through the charger and DC-DC converters, check enable and power-good lines, read connector pinouts and identify the capacitors or ICs pulling a rail to ground. Searching the PDF by net name speeds up locating pages.
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 @schematicslaptop. 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.