Named for the 2SK2824 transistor, this 305 KB PDF is indexed as a schematic but is most likely a single-part datasheet. JIS nomenclature assigns the 2SK prefix to N-channel field-effect transistors. Repair use centres on confirming terminals, reading absolute maximum ratings and selecting a compatible substitute when the original is hard to source. Open it in any PDF viewer. Check the printed code on the component and the package style on the PCB before treating this sheet as the correct reference.
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.