PDF sheet, 47.9 KB, named for the 2SC4070 transistor and filed as a schematic. JIS naming assigns the 2SC prefix to NPN bipolar transistors; package, maker and specifications are not part of the name. Open it in a PDF viewer to find the pin assignment and rated voltage, current and dissipation. That information matters when a board has a shorted transistor and you need to confirm the failure or source an equivalent with at least the same ratings. Confirm the printed code on the component matches before relying on it.
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.