Reference PDF, 110 KB, for the 2SJ383 transistor, catalogued under schematics but by name a datasheet. The 2SJ prefix in the Japanese JIS system marks a P-channel field-effect device, often used for load switching and power path control. The name states no manufacturer or package. Read it for pinout, breakdown voltage, on-resistance and gate threshold, then compare these figures with any proposed replacement and make sure its footprint and pin order fit the board being repaired.
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.