PDF of 97.0 KB for the 2SC3651, an NPN bipolar transistor according to the 2SC prefix of the Japanese JIS designation scheme. No device, board or revision is given in the name, so it most likely contains the component datasheet rather than a circuit diagram. Ratings, curves and mechanical dimensions are typical. Technicians use it to identify pins, check limits against operating voltages on the board and verify whether a proposed substitute part is suitable.
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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)