PDF schematic for Apple logic board 820-03286, carrying A3114 in its name, delivered as a 6.93 MB rar. Apple identifies logic boards by 820-series numbers printed on the PCB, and that print should be checked before relying on these pages. Technicians use such diagrams to trace power rails, find which circuit drives a missing voltage and read the expected values around charging and power management. A boardview for the same number makes locating the referenced parts on the board much faster.
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 | 15 Nov 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 4 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 27 Oct 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.