Small 24.1 KB PDF for a 2SB772S, with UTC in the name, which most likely refers to Unisonic Technologies, a maker of discrete transistors. The 2SB772 is a JIS-numbered PNP power transistor; what the S suffix denotes is not stated, though suffixes like this often indicate a package option. Filed as a schematic, it is really a datasheet. Use it to check pinout, package drawing and maximum ratings, and compare the marking and case on the board before substituting.
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.