A compact 37.5 KB PDF carrying the name 2SA2044, a Japanese JIS transistor number in which 2SA stands for a PNP bipolar type. Its small size suggests a short component datasheet rather than a full schematic, though it is filed as one. No manufacturer or package is given in the name. Use the sheet to look up pinout, maximum collector-emitter voltage, current rating and gain, and compare the package outline and marking code with the part fitted on the board before replacing it.
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.