The 220 KB PDF named 2SC5076 is classed as a schematic, yet the name is simply a JIS part number for an NPN transistor, making it most likely a datasheet. Its size matches the 2SC5075 file, suggesting a shared document covering related parts, though that cannot be confirmed from the name. Look inside for electrical characteristics, package outline and pin order. Use it to confirm ratings before replacement and to compare candidate substitutes; any PDF reader opens it.
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.