Datasheet PDF for the 2SJ320, around 94.6 KB, indexed as a schematic. The name provides no device, board or revision details beyond the part number. In JIS numbering the 2SJ prefix designates P-channel field-effect transistors. Expect pin assignment, absolute maximum ratings and package dimensions. A technician can use it to probe the transistor in place, confirm whether it is shorted between drain and source, and select a replacement with matching polarity, footprint and voltage rating.
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.