PDF schematic for the Apple logic board 820-00923, with LOHWILL also appearing in the file name. Apple uses the 820-xxxxx pattern for logic board part numbers, and the number is usually printed on the PCB near the edge. A schematic like this lets a technician follow power rails, enable signals and sensor lines between sheets, and identify component values while diagnosing shorts or missing voltages. It opens in any PDF reader. Pair it with the matching boardview to find parts physically, and confirm your board number first.
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 @alischematics. 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 | |
|---|---|---|
| @alischematics | 16 Nov 2022 | Open file on RM Schematics |
| @notebookschematic | 12 Sept 2024 | Open file on RM Schematics |
| @pkbiosbdv | 30 Aug 2025 | Open file on RM Schematics |
| @schematiclaptopramkushwaha | 13 Sept 2025 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.