Datasheet-style PDF named for the 2SC5322, 122 KB, though the catalogue labels it a schematic. The 2SC prefix follows the Japanese JIS convention for NPN bipolar transistors. Look for maximum voltage and current limits, gain classes, switching or frequency data and the lead assignment of the case. The name carries no brand or equipment model, so confirm against the marking on the part. A suffixed FT version also exists in this set, so check which variant is actually fitted before ordering a replacement.
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.