Compact 57.8 KB PDF named after the 2SC2206, with an _E suffix in the file name whose meaning is not stated. Although classed as a schematic, the JIS-style 2SC designation indicates an NPN bipolar transistor, so the content is most likely its datasheet. Use it to read lead order, maximum collector voltage and current, power dissipation and hFE ranks before testing or replacing the component. Check that the package and marking of the part on the board agree with the document before relying on the pinout.
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.