34.2 KB PDF for the 2SK1255 N-channel MOSFET, listed under schematics in the index although it is a single-component sheet. The 2SK designation comes from the Japanese JIS registration for N-channel field-effect transistors. It should present voltage and current limits, on-resistance, gate threshold and the package pin layout. Use it to test the device in circuit or after removal, to confirm drain and source orientation, and to verify a substitute matches the original ratings before fitting it.
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.