Filed under schematics, the 96.3 KB PDF carries the code 48CTQ060L and no device, brand or board information. The designation follows the pattern of a component part number, and the final letter may denote a package or variant, so treat it as a datasheet. It usually covers maximum ratings, typical curves and the pinout of a dual-terminal or common-cathode device. Use it to confirm a replacement before soldering, and check the code printed on the part matches exactly.
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.