PDF sheet, 218 KB, for the 2SA1049 transistor, indexed as a schematic. The 2SA prefix identifies a PNP bipolar device under Japanese JIS registration. No package or revision is stated in the name. The document should provide ratings, characteristic curves and the lead layout. Before fitting a replacement, compare its polarity and pinout with this sheet and confirm that voltage and dissipation ratings meet or exceed those of the original component on the board.
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.