PDF document of 116 KB carrying the code SDZS014, apparently part of the same numbered series as the neighbouring SDZS files. Nothing in the name reveals the component, manufacturer or revision, so it should be opened to see which device it describes. As a datasheet it would typically supply pinout, electrical characteristics and typical circuits that support fault diagnosis and part substitution. Verify the part number inside against the chip on the PCB before using any values.
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.