Schematic-category PDF, 155 KB, carrying the code 301CNQ and no other identifying details such as model, maker or board revision. It appears to be a series-level document for a power component family, related in naming to a 303CNQ file in the same set. Open it in any PDF viewer to review pin configuration and ratings. Before relying on it, check the full code, including any numeric suffix, printed on the component you intend to test or replace.
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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)