Reference sheet for the 2SC4627, a JIS-numbered NPN transistor, supplied as a 61 KB PDF. The _E suffix in the name may indicate an English edition of the manufacturer document, though the name alone does not confirm it. Although listed as a schematic, contents are most likely datasheet material: pinout, ratings, gain figures and outline dimensions. Use it to verify the emitter, base and collector layout before in-circuit diode testing, and match the package and ratings before soldering in any replacement part.
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.