Part number 2SC3467 is the only information in this 138 KB PDF, which is catalogued under schematics. Under the JIS naming system a 2SC designation identifies an NPN bipolar transistor, so the content is probably the component's datasheet with ratings, characteristic curves and package outline. Use it to check base, collector and emitter order before soldering, and to pick a substitute with equal or higher voltage, current and power limits. Any PDF reader opens it; confirm the full suffix on the part you are replacing.
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.