PDF file of about 148 KB describing the 2SJ315, listed in the schematic section. No board or brand is mentioned, only the part number. The 2SJ prefix denotes a P-channel field-effect transistor in the Japanese JIS system, so the sheet should hold ratings, curves and outline drawings. Bench uses include confirming pinout before measuring, diagnosing shorts in a switching stage and picking a substitute. Always match package, polarity and the voltage and current margins of the original.
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.