Data for the 2SK1443 in a 110 KB PDF, indexed as a schematic though it is presumably the transistor's data sheet. JIS numbering uses 2SK for N-channel field-effect transistors. A related LS-suffixed sheet is also listed. Technicians open it to find the pinout, read drain-source voltage, current and gate threshold, and confirm that a proposed equivalent is safe to fit. The name gives no package information, so match the footprint and marking on the PCB 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)