Schematic for the Gigabyte GA-990XA-UD3 desktop motherboard, with R303 in the name, packed in a RAR archive of about 994 KB containing a PDF. The token likely refers to a board or document revision, so check the revision printed near the PCIe slots before relying on it. A technician uses these pages to trace VRM phases, standby and main rails, Super I/O and BIOS chip wiring, and to find why the board will not power on. Extract the PDF and open it in any standard 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.