Component sheet for the 2SB779, delivered as a 40.5 KB PDF. It is catalogued as a schematic, though a name consisting of a bare part number indicates a datasheet. JIS numbering assigns the 2SB prefix to low-frequency PNP transistors. The meaning of the _E suffix cannot be confirmed from the name. Use the document to read package dimensions, pin layout and maximum collector current and voltage, and verify the code on the transistor body, commonly printed as B779, before swapping parts.
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.