Part reference for the 2SA1208 as a 44.3 KB PDF, placed in the schematic category though nothing in the name goes beyond the component number; expect datasheet content. Under Japanese JIS designations, 2SA indicates a PNP bipolar transistor. Use the ratings table and pinout drawing to check a suspect part and to qualify a substitute by voltage, current and dissipation. A quick diode-mode test of both junctions confirms a failure, and the package outline helps match leads to the board holes.
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.