PDF schematic for the Apple logic board 820-2090, revision A, with the Apple drawing number 051-7199 and revision E000, packed into a 1.09 MB RAR. Apple uses 820- numbers for its logic boards, and the 051- code identifies the schematic document itself. A schematic lets you trace power rails, check signal paths and identify the parts around a fault. Make sure the 820 number and revision on your board match before relying on component values, and pair it with a boardview for locating parts.
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 (6)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @schematicslaptop | 7 Feb 2022 | Open file on RM Schematics |
| @pepeelectronica | 21 Apr 2022 | Open file on RM Schematics |
| @boardviewsandachematics | 1 Sept 2025 | Open file on RM Schematics |
| @cyberlanelectonik | 14 Jul 2026 | Open file on RM Schematics |
| @schematics_bios | 24 Jul 2026 | 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.