Covering the 2SA1433, this 78.1 KB PDF is indexed as a schematic but is most likely a component data sheet. By Japanese JIS convention the 2SA prefix identifies a PNP transistor, with the high-frequency class as its formal meaning. The file name adds no revision or package detail. Typical contents are limits, electrical characteristics, hFE classes and a mechanical drawing. Check the package marking on the board part against the document before ordering a replacement, and compare gain grades where the circuit is sensitive to them.
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.