Document for the 2SA1619 in PDF form, 51.3 KB, catalogued under schematics though it concerns a single transistor. The trailing E in the name possibly marks an English-language edition, but that is not certain. Per the JIS system, 2SA parts are PNP transistors for high-frequency service. Open it in a standard PDF reader to look up pin functions, package drawing and electrical limits, which helps when diagnosing a dead stage or sourcing an equivalent PNP part with matching ratings.
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.