Apple repair archive for logic board 820-01598, 5.86 MB in RAR format. The name also carries 051-04273, which in Apple numbering is usually the schematic document number that pairs with the 820 board number, so a PDF schematic is the likely content. Technicians use such diagrams to follow power sequencing, trace signal paths and find the parts on a rail that is shorted. Compare the 820 number printed on the PCB with the file before relying on any values or part references.
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 @LaptopsBoardview. 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 | |
|---|---|---|
| @LaptopsBoardview | 23 Jan 2021 | Open file on RM Schematics |
| @generalschematics | 19 Oct 2024 | Open file on RM Schematics |
| @boardviewsandachematics | 2 Sept 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 4 Jul 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.