Datasheet PDF named after the 2SJ288, around 99.5 KB, catalogued as a schematic. The name provides no model, brand or board revision. In JIS numbering, 2SJ marks a P-channel FET, so the content should include maximum ratings, electrical characteristics and package data. It helps when testing a suspected shorted transistor or tracing which pin connects to the supply rail. Before substituting, ensure the replacement shares polarity, pin order and at least equal voltage and current ratings.
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.