Apple logic board schematic for board number 820-00923, supplied as a 3.20 MB PDF; the LOHWILL tag in the name likely refers to the source of the scanned set. Use it to trace power rails, follow enable and power-good signals and identify the parts around a suspected short circuit on the board. Apple prints the 820 number in the PCB silkscreen, so confirm it matches your board before taking voltages or reference designators from these pages, since similar models often use different revisions.
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 @laptexdna. Enginerys does not host this file.
All sources (6)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @laptexdna | 17 Jul 2020 | Open file on RM Schematics |
| @one5technology | 25 Nov 2020 | Open file on RM Schematics |
| @one5technology | 26 Nov 2020 | Open file on RM Schematics |
| @laptexdna | 25 Jul 2022 | Open file on RM Schematics |
| @generalschematics | 15 Sept 2024 | Open file on RM Schematics |
| @generalschematics | 15 Sept 2024 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.