A 508 KB PDF filed under schematics, named only with the JIS part number 2SC2996. The 2SC prefix identifies an NPN bipolar transistor, so the document is probably a component datasheet rather than a circuit drawing. The name gives no maker, package or revision. Opened in any PDF reader, a sheet like this helps a repairer read the base, collector and emitter layout, voltage and current limits and gain grouping. Compare these with a candidate replacement and the original part before soldering in a substitute.
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.