A 29.4 KB PDF covering the 2SC4710LS, a suffixed variant of the 2SC4710 number. Under JIS designation 2SC indicates an NPN bipolar transistor, and suffix letters usually distinguish package or grade, though the name does not explain LS. Filed as a schematic, it should in practice be a datasheet. Check pinout and package carefully, since suffixed variants can differ in lead arrangement from the base part, then compare ratings before fitting a replacement.
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.
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