RAR archive of 1.64 MB for the Apple A1278 logic board 820-2936, revision B, with K90i given in the name as Apple's internal project code. Contents are not listed, but archives of this kind usually hold the schematic PDF and sometimes a boardview file. Apple uses the 820-xxxx pattern for its own boards, and the revision letter matters because component placement and rail details can change between revisions. Compare the number on the PCB, then use the material to trace power sequencing, locate test points and check suspect lines for shorts.
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 (4)
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 | 26 Sept 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.