Bearing only the part number 2SC4393, this 319 KB PDF is indexed as a schematic yet is most likely the transistor datasheet. The JIS system uses 2SC for NPN bipolar devices traditionally aimed at high-frequency duty. Nothing in the name indicates maker or package. A technician would open it in a PDF reader to confirm pinout, voltage and current ratings, dissipation and typical curves before replacing a shorted part, and should make sure the marking and suffix on the installed component match the document.
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.