The 2SC3330 is documented in this 144 KB PDF, indexed as a schematic but titled like a component datasheet. Per the Japanese JIS system, a 2SC code identifies an NPN bipolar transistor. Expect limit values, electrical characteristics, curves and a mechanical drawing showing pin order. The name states no brand or host device, so check the code printed on the transistor. Use the pinout to verify diode-mode readings and to fit a substitute with matching or better ratings.
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.