Component documentation for 2SC4460 in a 108 KB PDF file. The number follows Japanese JIS registration, where the 2SC prefix denotes an NPN transistor for high-frequency use, so the content is most probably a datasheet despite the schematic classification. Specifics such as package and manufacturer are not given in the name. Repairers use these sheets to identify emitter, base and collector pins, read hFE ranks and maximum ratings, and select an equivalent when the original transistor 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.