PDF schematic for Gigabyte's GA-990XA-UD3 AM3+ motherboard family, labelled R112 and shipped as a 1 MB RAR archive. Gigabyte released this board in several revisions, and the layout and parts can differ between them, so match the revision silkscreened on the board before working from the drawings. Use it to follow CPU VRM, memory voltage and chipset supplies, check the power-on sequence and locate components around a short. Unpack with WinRAR or 7-Zip and view the PDF in any 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 (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 15 Dec 2022 | 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.