The 2SK2976 is documented in this 109 KB PDF. Its 2SK prefix marks an N-channel field-effect transistor in the JIS system, so the content is a datasheet rather than a board-level schematic. A repairer uses it to confirm package, gate-drain-source order and maximum ratings, to interpret characteristic curves, and to locate a cross-reference part. Before trusting the numbers, compare the code printed on the component itself with this part number.
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)