A 172 KB PDF labelled 2SC5174, filed under schematics, though the name points to a component datasheet rather than a board drawing. The JIS 2SC prefix identifies an NPN bipolar transistor of the high-frequency class. The name carries no maker, package or revision details, so read the document itself for those. Typical repair use is checking the base, collector and emitter pin order, voltage and current limits, and gain figures when hunting a substitute for a failed or shorted transistor.
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.