Part-number document for 2SA2056, stored as a 191 KB PDF and listed in the schematic section. The 2SA prefix is the JIS designation for a PNP bipolar transistor, so expect a datasheet with electrical characteristics and a package drawing. Nothing further is stated in the name. When replacing such a transistor, check the pinout against the board silkscreen, since pin order varies between packages, and confirm that any substitute meets the voltage, current and power ratings listed in the sheet.
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.