This 55 KB PDF is labelled 2SK2220 and indexed under schematics, though a part-number name usually means the datasheet of a single semiconductor. Under JIS/EIAJ rules, 2SK marks N-channel FETs; brand and package are not stated in the name. Consult the sheet to learn which pin is gate, drain or source and what voltage and current limits apply. Those figures are essential before soldering in a substitute or diagnosing a shorted junction with a multimeter.
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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