A short 60 KB PDF for the 2SC2404, with an _E suffix in the name that is not explained there. Under JIS numbering, 2SC indicates an NPN bipolar transistor, so the document is most likely a datasheet rather than a circuit schematic. Technicians rely on such sheets for absolute maximum ratings, hFE classification and lead arrangement. Compare the original body marking, frequently abbreviated to C2404, with the sheet before fitting a 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)