Apple schematic for logic board 820-00928, labelled MLB_BAFFIN2 diagram_LO and packed as a PDF inside a 3.18 MB RAR file. Baffin is the AMD Polaris graphics chip family, so the name points to a board with Baffin graphics. Use the diagram to trace GPU and CPU power rails, check enable signals and locate faulty circuitry during repair. Before relying on the part references, confirm that the 820 number and revision printed on your logic board match this schematic.
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 @boardviewsandachematics. Enginerys does not host this file.
All sources (2)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @boardviewsandachematics | 2 Sept 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 4 Jul 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.