Named 322CNQ and catalogued as a schematic, this 64.9 KB PDF contains no device or board details in its name. The code looks like a semiconductor family designation without a voltage suffix, so the content is probably a datasheet covering multiple rating grades. Expect terminal configuration, absolute maximum ratings and package dimensions. It helps a technician identify a rectifier module, test it for shorts with a meter in diode mode and source an equivalent. Read the full marking on the original part first.
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.