Reference sheet for the 2SA1300 transistor, supplied as a 207 KB PDF and filed under schematics in this index. The name carries only the part code, and 2SA denotes a PNP bipolar device under the Japanese JIS numbering system, so the content is presumably a component datasheet rather than a board diagram. A repair tech would open it in any PDF reader to read base, collector and emitter positions, maximum collector voltage and dissipation, and to judge whether a replacement from another maker is a fair 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.