The 152cnq030 code names a dual Schottky rectifier, so this 52.6 KB PDF, while filed as a schematic, should be the part datasheet, the 030 ending usually standing for 30 V. Expect electrical characteristics, forward voltage and leakage curves, and mechanical dimensions. It assists technicians replacing rectifiers in low-voltage, high-current output stages of power supplies. View it in any PDF reader and check the marking and package of the original component before choosing a replacement of equal rating.
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.
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The standard format for schematics, block diagrams, power-sequence charts and service manuals.