Base-version document for the 2SC4738, a 236 KB PDF placed in the schematic category. Following the JIS scheme, the 2SC prefix denotes an NPN bipolar transistor; F and FT variants of the same number appear separately in the index, so the full marking on your part decides which file applies. Open it in a PDF reader to check pinout, package drawing and absolute maximum ratings. These details guide out-of-circuit testing and the selection of a suitable equivalent when the original is unavailable.
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.