PDF schematic titled LCO-2 with board number 11297-1, which follows the Wistron pattern of a five-digit project number plus a dash revision. The name does not state the laptop brand or model, so identify the device by matching 11297-1 printed on the motherboard. Once matched, the sheets show power rails, regulator circuits, connectors and signal paths, which are useful when diagnosing no-power faults, locating a short or confirming component values. Wistron builds boards for several brands, so the same number may appear in more than one retail notebook.
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 @pepeelectronica. 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.