Apple logic board 820-4550 schematic diagram bundled with component layout material in a RAR archive of about 24 MB. The 820-xxxx pattern is Apple's own logic board numbering, and the name gives no model or revision, so identify the machine by the number printed on the board. The schematic serves to trace power rails, SMC and PMU signals, and fault paths, while the layout helps locate parts and test points. Check that the full 820 number on your PCB matches before trusting reference designators.
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 @SMART_PHONE_SCHEMATICS. Enginerys does not host this file.
All sources (9)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @SMART_PHONE_SCHEMATICS | 6 Oct 2022 | Open file on RM Schematics |
| @canalesquematicos | 22 Oct 2022 | Open file on RM Schematics |
| @canalesquematicos | 12 Nov 2022 | Open file on RM Schematics |
| @uzb4422 | 13 Feb 2023 | Open file on RM Schematics |
| @uzb4422 | 16 Feb 2023 | Open file on RM Schematics |
| @uzb4422 | 16 Feb 2023 | Open file on RM Schematics |
| @uzb4422 | 18 Feb 2023 | Open file on RM Schematics |
| @uzb4422 | 18 Feb 2023 | Open file on RM Schematics |
| @GENERAL_SMART_PHONE_SCHEMATICS | 11 Nov 2024 | 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.