The 2SC3932 is covered by this 57.8 KB PDF, whose name adds an _E suffix after the number. Catalogued as a schematic, it follows the JIS semiconductor code in which 2SC designates an NPN transistor intended largely for high-frequency circuits, so it should be a part datasheet. Repair technicians consult such sheets for pin configuration, package dimensions, maximum ratings and hFE ranges when diagnosing a shorted or open transistor and selecting a compatible replacement. Check the package type before soldering.
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.