Datasheet-style PDF, 317 KB, covering the 2SA1316 transistor even though the index type reads schematic. The 2SA designation belongs to the JIS scheme and marks a PNP bipolar part. Technicians rely on such a document to verify pinout before soldering, to look up voltage, current and dissipation ratings, and to read the hFE rank codes that may be printed on the body. Nothing else, such as the manufacturer or edition, is stated in the file name, so check the package type against the outline drawing.
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.