Small 41.7 KB PDF for the 2SA1961, with an unexplained E suffix that may mark a document edition. JIS numbering places 2SA parts in the PNP bipolar transistor class, and this file, though catalogued as a schematic, is probably the part datasheet. Use it to read pin assignment, package dimensions and ratings such as collector-emitter voltage and collector current before replacing a failed transistor. Nothing else is given in the name, so confirm the marking on the component.
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.