Service schematic for the Gigabyte GA-990FXA-UD3 motherboard at revision R302, stored as a PDF inside an 830 KB RAR archive. Repair work on this AMD 990FX board benefits from it when measuring rails, tracing the power-on sequence from the Super I/O to the VRM controller, or finding which MOSFET or capacitor sits on a shorted net. Gigabyte produced many revisions of this model, so match the 3.02 marking on the PCB against the drawing before trusting component values. Open the extracted file in any ordinary PDF reader.
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 @schematicslaptop. Enginerys does not host this file.
All sources (4)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 18 Mar 2024 | Open file on RM Schematics |
| @generalbios | 15 Dec 2024 | Open file on RM Schematics |
| @cyberlanelectonik | 15 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 2026 | Open file on RM Schematics |
How to open a .rar file
Compressed archive — the usual wrapper for a schematic + boardview pair or a BIOS + EC set.