Code 50WQ06F is the only clue in this 38.5 KB PDF, filed under schematics and naming no laptop, brand or board. The designation looks like a semiconductor part number, sibling to the 50WQ06FN document, so expect a short datasheet rather than a circuit diagram. Typical content includes the package outline, pin assignment and maximum voltage and current. Use it when measuring or replacing a component on a power circuit, and verify that the suffix on the actual part matches this one before substituting.
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 @cyberlanelectonik. 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.