Although catalogued as a schematic, this 51.4 KB PDF is named for the 2SC1317, which the JIS 2SC prefix identifies as an NPN bipolar transistor, so a component datasheet is the expected content. The _E suffix is probably the English-language edition. Such a sheet supplies maximum ratings, characteristic curves, gain classes and the case drawing with lead order. Repair work uses it for meter testing the junctions in the right orientation and for picking a replacement whose voltage and power ratings are at least as high.
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.