A schematic-category PDF of 129 KB whose name, 50WQ04FN, identifies no device, board number or revision. The code reads as a discrete component part number from the same family as the other 50WQ files, differing in its voltage grade, so the document is most likely a datasheet. Use it in a PDF viewer to check ratings, the footprint and pin numbering when diagnosing a short or ordering a spare. Confirm that the full marking on the board part matches before trusting the specifications.
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.