Only the type number 2SC4836 appears in the name of this 110 KB PDF, indexed as a schematic. JIS semiconductor naming assigns 2SC to NPN bipolar transistors, so the contents are most likely its datasheet. No other details, such as maker or case, are stated. For repairs, the sheet provides pinout and electrical limits used when testing a part with a meter, orienting a replacement correctly and choosing a cross-reference. Check the marking and package of the original component 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.