Filed as a schematic, this 464 KB PDF carries just the name 2SC4322 and should be read as a transistor datasheet. Under the Japanese JIS system a 2SC part is an NPN bipolar transistor, and the marking usually omits the 2S prefix, showing C4322. Before replacing one, verify the package and pin order from the drawing, test the junctions with a multimeter in diode mode out of circuit if readings are ambiguous, and match collector-emitter voltage, collector current and power ratings when choosing an alternative.
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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