Quanta schematic PDF for project G35, about 3.14 MB, with a trailing r in the name whose meaning is not certain. Quanta labels its designs with project codes like this, usually printed on the board within a DA0 style number, and the brand or laptop model is not stated. The diagram is used to follow power rails, check signal routing, read part values and narrow down a short on the main board. Compare the code and revision printed on the PCB with the title block before relying on it.
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 @ithinkhs_casediscussion. 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.