Small 41.8 KB PDF for the 2SA1890, with an _E suffix in the name that commonly marks an English-language edition of a Japanese datasheet, though the file does not confirm this. The 2SA code places the part among JIS PNP bipolar transistors, so expect component specifications rather than a full schematic. Use it to read the pin arrangement, package type and electrical limits when testing or replacing the device. Check that the marking on the board part matches before relying on the figures.
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.