Quanta repair archive for the GC3 project, packed as a 101 KB ZIP. Quanta identifies its designs with short project codes like this, and the same code is usually printed on the motherboard next to a revision. The name gives no detail on the contents, and the small size suggests a single compact document or a boardview rather than a full schematic set. Open it to trace power rails, find test points and check signal paths, after confirming that the code and revision on the PCB match.
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 @ITHINKHS. Enginerys does not host this file.
How to open a .zip file
Compressed archive that every operating system opens without extra software.
Built-in OS tools7-Zip