Part reference for the 2SK2782, delivered as a 419 KB PDF under the schematic label. The 2SK prefix follows Japanese JIS numbering for N-channel field-effect transistors, so the content is most likely a full datasheet. It helps when locating gate, drain and source, checking ratings against the supply voltage in the circuit, and choosing an alternative device. Open it in any PDF reader. Before replacing anything, confirm that the code on the failed part and its package match this document.
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.