Filed as a schematic, the 44.6 KB PDF named 16SCYQ045C names a component rather than a device and gives no board number or revision. The code resembles International Rectifier Schottky rectifier numbering, so the document most likely covers one part: reverse voltage and current ratings, thermal data and the case outline. Open it in any PDF reader when choosing a substitute diode for a power circuit, and compare the package and printed code on the original part before soldering in a replacement.
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.