A 267 KB PDF for the 2SC3113, catalogued as a schematic but by its name most likely a component datasheet. Under the Japanese JIS numbering system, the 2SC prefix marks an NPN bipolar transistor intended for high-frequency use. A technician would check the pinout, package outline, maximum voltage and current ratings and gain figures here before fitting a replacement. Confirm that the marking on the part matches, because the name gives no maker, package or 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.