Schematic diagram in PDF for Apple logic board 820-00597, with LO2 shown as an additional label, packed into a RAR archive. Apple numbers its logic boards in the 820-xxxxx format, and the suffix on the PCB indicates the revision. Technicians use the schematic to trace power rails, follow the power-up sequence and check component values when diagnosing no-power or short faults. Open the PDF in any reader, and match the 820 number on your board before relying on the diagrams.
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 (3)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 22 Jun 2022 | Open file on RM Schematics |
| @boardviewsandachematics | 2 Sept 2025 | 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.