Package for Apple logic board 820-2491 marked with project code K51A, in a 1.44 MB RAR archive. A separate archive labelled K51 exists for the same board number, so the A suffix may indicate a variant or later revision of the design; compare against your board. The name does not list contents, though schematics or boardview data are typical. After matching the PCB marking, use the documents to follow power rails, check enable signals and locate components and test points.
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.