Apple A1297 documentation for project K20, combining schematic number 051-7656 and logic board 820-2390, in a 2.04 MB RAR archive. Having both identifiers makes matching straightforward: 051- denotes Apple's schematic document and 820- the board part number. Technicians rely on such drawings to follow the power-on chain, check the charger and SMC circuits and locate faults on the board. Compare the 820-2390 marking on your PCB before using values, since this model came with several boards.
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.