PDF, 87.5 KB, for the 2SK1735 semiconductor. Part numbers beginning 2SK are registered in the Japanese JIS scheme as N-channel field-effect transistors, making this most likely a datasheet. The name contains no other details such as maker or package. Look for ratings, electrical characteristics and the terminal layout. Use it to identify pins before probing, confirm whether a device is shorted and choose a substitute with matching package and equal or higher ratings. Check the printed code on the part first.
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.