Component documentation for the 2SK1475, a JIS-style part number whose 2SK prefix identifies an N-channel FET. Listed as a schematic, the 121 KB PDF names no product or board and is best treated as the transistor datasheet. Technicians open it to confirm which leg is gate, drain and source, to read maximum drain-source voltage and current, and to judge whether a candidate substitute matches. Before trusting the data, compare the marking on the physical part with the number here, since similar codes are easy to confuse.
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.