Reference PDF of 175 KB for the 2SC2235, a JIS-style designation where 2SC denotes an NPN bipolar transistor. Although filed as a schematic, the name points to a single component, so the file most likely holds its datasheet. A repair technician would consult it to confirm lead assignment, maximum ratings and typical characteristics when testing a suspect device with a multimeter or picking an equivalent. Always read the actual marking on the board part, since rank letters and package variants change specifications.
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.