RAR archive of 3.18 MB containing the schematic diagram for Apple logic board 820-00928, marked MLB_BAFFIN2 diagram_LO. The Baffin token refers to an AMD Polaris GPU fitted to this main logic board. The size matches the PDF-labelled copy of the same board, so the two are likely duplicates. Technicians open such diagrams to follow power sequencing, find rail sources and trace signal paths when diagnosing no-power or no-video faults. Verify that the board number on the PCB matches.
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.