PDF of 410 KB for the 2SK2717, recorded as a schematic but named after a single semiconductor part. In the Japanese JIS scheme the 2SK prefix indicates an N-channel field-effect transistor, so the document is effectively its datasheet. Technicians draw on it to confirm pinout, check absolute maximum ratings and safe operating area, and judge whether an alternative transistor can replace a failed one. The name supplies only the part number, so compare the printed marking on the component before relying on it.
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.