No device or board appears in the name 161cmq, which instead looks like a dual Schottky rectifier family code; at 47.0 KB this PDF is probably a short datasheet, though the index files it under schematics. With no voltage suffix it may list several grades in one table. Repairers use such sheets to check current, forward voltage and lead assignment for output rectifiers in switch-mode supplies. Open in any PDF reader and compare the full marking on the component before buying 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.