Reference sheet in PDF form for the 2SA1969, a part number that under Japanese JIS rules denotes a PNP bipolar transistor. Although catalogued as a schematic, a file named only by the component code is normally the manufacturer datasheet. Repair work typically draws on it for pin assignment, package dimensions, collector-emitter voltage limits and gain classes when replacing a failed device. The name gives no maker or revision; at 137 KB it opens in any standard PDF viewer.
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.