Part documentation for the 2SD1196 in a 139 KB PDF, placed in the schematic category but evidently a component datasheet given its name. Japanese JIS part numbers that start with 2SD belong to NPN bipolar transistors for low-frequency service. A repair technician opens this kind of sheet in any PDF reader to confirm lead order, the hFE grade letters and maximum ratings. Match those figures and the package type before fitting a substitute, and test the original with a meter to confirm it has actually failed.
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.