A 43.8 KB PDF for the 2SD2565 transistor, its name ending in _E. Although classified as a schematic, the file is most likely a datasheet, as the JIS prefix 2SD designates an NPN bipolar transistor for low-frequency applications. No manufacturer, package or variant is stated. Repair technicians use such documents to confirm pin order, check absolute maximum ratings and gain ranges, and ensure any substitute device can safely handle the voltage and current of the original position.
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.