Datasheet PDF of 36.1 KB for the 2sk2572, filed under schematics although nothing in the name points to a board or appliance. JIS semiconductor naming reserves 2SK for N-channel FETs. A sheet this size typically carries pin configuration, package outline and key electrical characteristics. Technicians open it to orient probes correctly, judge whether a measured short means failure and select a replacement with matching or higher ratings. Compare the component marking against the number before relying on the figures.
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.