Filed as a schematic, the 103 KB PDF 63ctq100 gives no device model, brand or board revision in its name. The code resembles a discrete component part number, so the content is probably ratings, pin layout and package details rather than a full circuit. Similar codes such as 63cpq100 appear in this set, likely differing in package. It opens in any PDF viewer. Check that the package and marking on the part in your board match this exact code before using it for a replacement decision.
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.