For the 2SK2985 transistor, this 424 KB PDF is filed as a schematic but its name indicates a single-component datasheet. Devices numbered 2SK are N-channel field-effect transistors in the Japanese JIS system. Open it to check package style, pin assignment and rated voltage and current, then measure the suspect part in diode mode to see whether it is shorted. Make sure the marking on the board part matches before using the figures for a replacement choice.
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)