A PDF for part 2SC3083, 98.2 KB in size and catalogued under schematics, though the name suggests a datasheet. Only the part code is given. Japanese JIS designations with the 2SC prefix cover NPN bipolar transistors in the high-frequency class. Open it in any PDF viewer to read the pin assignment, package drawing and absolute maximum ratings before testing or replacing the component in circuit. Make sure the part marking matches, since the file states no manufacturer or gain grade.
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.