Single PDF of 40.8 KB for the 2SD2216, listed as a schematic but most likely a component datasheet, since the name is a part number rather than a board. Under the Japanese JIS scheme, the 2SD prefix marks an NPN bipolar transistor for low-frequency use. The trailing E suffix is not explained by the name. Use the sheet to check pinout, package, maximum voltage and current ratings and gain before choosing a replacement, and confirm the body marking on the part matches.
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.