English-language datasheet, as the _E suffix suggests, for the 2SD2260 NPN bipolar transistor, supplied as a 45.3 KB PDF in the schematic section. It covers the main absolute maximum ratings, electrical characteristics and pin assignments used when checking or replacing this part in power, switching or audio stages. Confirm which lead is base, collector and emitter from the outline drawing, and compare the case marking on the original device with the document before installing a substitute.
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.