This 193 KB PDF, catalogued under schematics, is named 110cnq045a, which reads as a discrete power component code rather than a board identifier. The name carries no model, brand, board number or revision. A matching 111cnq045a sheet is also indexed, so the two likely describe related variants. Consult it for ratings, pin assignment and package dimensions when checking a shorted rectifier or choosing an equivalent. Any PDF reader opens it; confirm the exact part marking on the component before use.
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.