Data sheet for the 2SC4502, a small 45.1 KB PDF whose name ends in an E suffix, likely marking an edition or English version, though that is not certain. The 2SC prefix denotes an NPN bipolar transistor under JIS rules. Although filed as a schematic, it documents one component: ratings, characteristics and package. Use it to confirm pinout and limits when replacing or substituting the part, and check the marking on the original device matches the number.
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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)