Covering the 2SC4632, this 89.2 KB PDF sits in the schematic category, yet its name matches a transistor part number. The JIS EIAJ system reserves 2SC for NPN bipolar transistors. An LS-suffix companion sheet is also in the collection, so check which version your board uses. The document is the place to look up ratings, gain grouping and the pin layout. Use it to test the part out of circuit or to select a substitute with adequate margins.
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.