Schematic in PDF format for a Wistron board numbered 19817-1, 6.86 MB in size; the name does not state the laptop brand or model. Wistron identifies projects with a five-digit number and variant suffix, and that marking on the PCB should match before using the pages. The diagrams cover power rails, charging circuitry, signal paths and component values, so a technician can trace missing voltages and isolate a short. Any PDF viewer opens it, with text search useful for net names.
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. 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.