Apple schematic for the J113 project, logic board 820-00165 at revision A according to the name. Apple uses 820-xxxxx numbers for main logic boards, and the number is printed on the PCB, so it is the reliable way to confirm a match rather than the model name. The PDF covers power sequencing, rails and signal paths, useful when diagnosing a board that will not power on, chasing a short on PPBUS or checking SMC-related circuits. Revisions of the same 820 number can differ in component values.
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 (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @alischematics | 13 Sept 2021 | Open file on RM Schematics |
| @pepeelectronica | 28 Apr 2022 | Open file on RM Schematics |
| @schematics_bios | 3 Aug 2026 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.