A compact 47.6 KB PDF called 2SD1330_E, likely the datasheet for the 2SD1330 NPN low-frequency bipolar transistor under JIS numbering, though it is catalogued as a schematic. The _E ending may denote an English edition; the name alone does not prove this. Use it to check pin order, ratings and hFE classes when replacing or testing the transistor. Since the manufacturer and package are not given, compare the marking and body of the original component with the drawing before relying on it.
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.