Datasheet-type PDF for the 2SA1964 PNP transistor, 38.5 KB, named with the lowercase part code only. The 2SA prefix is part of the Japanese JIS designation scheme for PNP bipolar devices. Although indexed as a schematic, the content is likely component specifications: pinout, package drawing, breakdown voltages, current rating and gain classes. A second 2SA1964 document with a 1-2 tag exists, which may be a different edition. Check the part marking on the board before trusting either.
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.
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