Catalogued under schematics, this 121 KB PDF titled 2SK2167 most likely holds the datasheet for that transistor. The 2SK prefix means an N-channel FET in the Japanese JIS/EIAJ numbering system; manufacturer and package are not given. The sheet serves repair work by documenting pin order, voltage and current limits, and capacitance or switching data. Use it to diagnose the part or to pick an equivalent. Verify the marking on the physical component before trusting the match.
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.