Schematic in PDF form for the Dell OptiPlex 760, tagged GAO with the code GAO403, compressed in a 2.22 MB RAR. The circuit sheets let a technician follow standby and main power rails, check the power-on sequence, and identify the parts on a shorted line or a dead voltage regulator. The same platform code appears on a matching BIOS dump, so the two files can be used together. Verify that the motherboard in front of you carries the same board identification before relying on part references.
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 | 17 Feb 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.