A 31.0 KB PDF for the 2SJ597, stored in the schematic category although it is named like a single-part datasheet. In JIS semiconductor naming, 2SJ marks P-channel field-effect transistors, frequently used for power path and load switching. Technicians consult such sheets for pin order, threshold voltage, on-resistance and maximum ratings before replacing a suspect device. No manufacturer or package is given in the name, so confirm the marking and footprint on the board you are repairing.
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.