The 2SJ619 is the subject of this 314 KB PDF, indexed as a schematic though the naming suggests a component datasheet. JIS designations beginning with 2SJ identify P-channel FETs. Useful details to look for inside are pinout, maximum voltage and current, gate threshold and thermal limits, which help when judging a replacement or checking a suspected shorted transistor with a meter. The name lists no brand or package, so confirm the marking on the device you are servicing.
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.