Indexed as a schematic, 1T369 is a 44.8 KB PDF identified only by its part code. No device, brand or board revision is stated in the name. Its small size fits a short component document showing pin assignment, package outline and electrical limits. Any PDF viewer opens it. A technician can use it to recognise the part on a board, judge whether it has failed by comparing readings with the specified values, and select a compatible replacement. Check the marking on the component matches.
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.