Stored under schematics, this 122 KB PDF is named for the 2SJ195, a P-channel FET in the Japanese JIS numbering system, and is most likely its datasheet. A sheet like this gives the pin configuration, ratings and typical curves a technician needs when checking a suspected shorted or open transistor or sourcing a replacement. The name gives no manufacturer, package or date, so compare the case style and marking on the board with the drawing inside before trusting it as a match.
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.