PDF documentation for the 2SA1034, 55.6 KB, with an _E suffix in the file name and catalogued with schematics. In JIS numbering the 2SA prefix marks a PNP bipolar transistor. The file should list ratings, gain classes and mechanical dimensions. Technicians use it to identify the leads of a suspect part, test it out of circuit with a meter, and choose a replacement whose voltage, current and gain match, paying attention to any gain-rank letter on the original.
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.