Schematic for the 2012 MacBook Air 13-inch A1466, logic board 820-3209-A, packed as a 2.78 MB RAR containing a PDF. Apple uses the 820- prefix for logic board numbers, with the letter suffix giving the revision. Technicians use it to follow power rails such as PPBUS, diagnose no-power and charging faults, and trace shorts on the board. Check the number etched on your logic board, since the A1466 was produced with several different boards across years.
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 | 20 Aug 2022 | Open file on RM Schematics |
| @boardviewsandachematics | 1 Sept 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 19 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.