Component datasheet for the 2SA2061 transistor, provided as a PDF of about 169 KB and listed under schematics. JIS numbering gives the 2SA prefix to PNP transistors designed for high-frequency operation. The document should contain pin configuration, package drawing, maximum ratings and electrical characteristics with curves. Use it to identify terminals on the board, interpret test readings and select a replacement with equal or higher voltage, current and dissipation ratings, after confirming the package and marking 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.