The 2SK2035 transistor is the subject of this 295 KB PDF, most likely the manufacturer datasheet given that 2SK is the JIS prefix for N-channel FETs. It is listed among schematics but describes one component. Keep it handy when diagnosing a shorted or open FET: the pinout and package drawing help locate the correct test points, and the ratings tables guide selection of a replacement. Since no supplier or variant is named, confirm the device code and any suffix on the board before ordering parts.
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.