Apple logic board schematic for 820-00928, with MLB_BAFFIN2 in the name indicating the main logic board design, likely tied to an AMD Baffin GPU variant. The 3.18 MB RAR holds the circuit diagram, the LO suffix probably marking a lower-resolution copy. Use it to trace power rails, follow the power-up sequence and identify components when diagnosing a dead board. Apple uses the 820-xxxxx numbering, so match the number printed on the PCB exactly.
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 | 3 Oct 2021 | Open file on RM Schematics |
| @LaptopsBoardview | 13 Nov 2021 | Open file on RM Schematics |
| @generalschematics | 19 Oct 2024 | 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.