English-edition datasheet, suggested by the _E suffix, for the 2SB1463 transistor, stored as a 40 KB PDF in the schematic section. The Japanese 2SB code designates a PNP transistor for low-frequency circuits. The name holds no manufacturer or revision information. Technicians open it in any PDF viewer to read terminal order, maximum voltage, current and dissipation, which is needed when checking a shorted device or selecting a compatible replacement for the board.
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.