Small 91.1 KB PDF named sn608098, filed as a schematic. The name does not reveal the device; it may be a Texas Instruments component number, though that cannot be confirmed from the name alone, so open the document to see what it actually covers. If it is a chip datasheet, it will give the pinout and application circuit used to check a part in place on a board. Always compare the package marking with the document before substituting a component.
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 @one5technology. 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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)