A 207 KB PDF for the 2SA1736, filed in the index as a schematic but named after a single semiconductor part rather than a board. Under the Japanese JIS designation system the 2SA prefix marks a PNP bipolar transistor intended for high-frequency use, so the document is most likely a manufacturer datasheet. Expect pinout, package drawing, absolute maximum ratings and electrical characteristics. Use it to confirm the base, collector and emitter order before fitting a replacement, and compare ratings carefully when choosing a substitute.
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.