Datasheet for the SM6004, a 192 KB PDF; the name does not reveal who makes the part or what it does, so check the opening page to confirm the device. A document of this size typically holds a pin diagram, function description, ratings, electrical characteristics and an application example. Repair technicians use it to trace supply and signal pins on the board, measure them against the specified values and confirm whether the IC has failed. Make sure the package and full marking on the chip match before using it.
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 @datasheet_technar_org. 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.