Datasheet covering the 2SC4487 transistor, stored as a 155 KB PDF and filed as a schematic in the index. The 2SC designation follows JIS convention for NPN bipolar parts; no maker or package is named. The document should list breakdown voltages, collector current, power dissipation and terminal layout. It is handy for verifying a failed device and picking a substitute. Compare the outline with the footprint and ensure any replacement meets or exceeds the original limits.
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.