Schematic for the Huaqin NB2672 project, supplied as a 3.55 MB PDF. Huaqin is a Chinese ODM that designs notebooks for several brands, and the name gives no retail model, so identify the board by the NB2672 marking on the PCB. The diagrams serve for following power distribution, checking regulator enable signals, reading connector pinouts and tracking down a shorted rail. Any PDF reader opens it. Search for net names to move between pages, and confirm the board revision before trusting individual part values.
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 @afsschematicfree. 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.