At 178 KB, this PDF for the 2SK3020 is one of the fuller documents in the group, listed as a schematic but serving as a datasheet. The 2SK prefix indicates an N-channel field-effect transistor under JEITA naming. Use it to map pins, check drain-source voltage, current capability and dissipation, and compare package outlines when choosing a replacement. Match the marking on the fitted component to this number before relying on the pinout in a repair.
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)