Apple schematic for logic board 820-00597, revision A, labelled LO2 in the name and stored as an 8.87 MB RAR containing a PDF. Apple numbers its logic boards with the 820 prefix, printed on the PCB. The diagram is used to follow power rails such as PPBUS and standby supplies, check the SMC and charging circuitry and find components when diagnosing no-power or short faults. Open it with a PDF reader, and confirm the 820 number and revision on your board match before measuring.
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 @schematicslaptop. 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 | |
|---|---|---|
| @schematicslaptop | 15 Oct 2023 | Open file on RM Schematics |
| @LaptopsBoardview | 19 Jul 2024 | Open file on RM Schematics |
| @generalschematics | 19 Oct 2024 | Open file on RM Schematics |
| @schematics_bios | 14 Aug 2026 | 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.