The 103 KB PDF 62ctq030 is filed as a schematic, yet its name holds only a part-number-style code with no brand, device or board revision. It probably documents a discrete semiconductor, giving ratings, pin configuration and package outline. A related 62cnq030 file appears in the same set. Open it with any PDF reader. Technicians use such data to judge whether a component is suitable as a replacement, so verify the package and complete marking on the board 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.