Carrying only the designation 2SK2200, this 413 KB PDF is listed with schematics yet most likely documents one transistor. JIS/EIAJ numbering reserves 2SK for N-channel FETs, and no manufacturer or package appears in the name. Bench technicians rely on such datasheets for pinouts, absolute maximum ratings and characteristic curves. These help when testing a suspected short or confirming that a cross-referenced part will survive in the original circuit. Compare the case marking 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.