Labelled 2SC4835 with an _E suffix, this 41.5 KB PDF is filed as a schematic but refers to a JIS-numbered NPN transistor, indicated by the 2SC prefix. The suffix plausibly marks an English-language edition of the datasheet, though the name does not confirm it, and no maker or package is given. Use the document for pinout, maximum ratings and characteristics when testing a suspect part or selecting a substitute. Verify the printed marking on the board component matches before replacing 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.