The 2SC5416 base part is described in this 45.8 KB PDF, indexed as a schematic, with an LS variant held in a separate file. JIS designation 2SC refers to an NPN transistor, usually for high-frequency use, so this is a component datasheet with ratings, characteristics and package drawings. On the repair bench it helps determine collector, base and emitter, verify a substitute, and recognise the package. Check that the component has no suffix letters before applying this sheet instead of the LS version.
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.