Apple logic board 820-2523, revision A, is the subject of this 2.29 MB RAR archive. Apart from board number and revision, the name does not reveal the model or exactly which documents are inside, so unpack it to see whether you get a schematic, a boardview or both. Apple's 820-xxxx numbering marks its in-house logic boards, with the revision often given as a suffix. Check both number and revision on the PCB before tracing power sequences, measuring rails or hunting a short with these drawings.
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 @Mac_Shematic_Santale. 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 | |
|---|---|---|
| @Mac_Shematic_Santale | 5 Jul 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 28 Sept 2019 | Open file on RM Schematics |
| @IT_SERVICE_WORLD | 2 May 2021 | 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.