A 134 KB PDF for the 2SK2460N, catalogued as a schematic but almost certainly a datasheet for a discrete transistor, since 2SK numbers under the Japanese JIS system denote N-channel FETs. The name ends with a 1-5 suffix that is not explained; it may be a page range or document revision. When replacing a shorted MOSFET, confirm the full marking on the package against this document and compare gate threshold, voltage rating and pin order before fitting any alternative part.
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.