Apple schematic for logic board 820-4924, with 1502 in the name possibly referring to a model year or project, supplied as a 2.88 MB PDF. Apple stamps the 820-xxxx number on every logic board, so match yours and its revision before use. The drawing lets you follow the power-on sequence, check each rail and its enable signal, and identify the SMC, charger and regulator circuits. It pairs well with a boardview of the same number to locate the parts on the PCB.
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 @laptexdna. Enginerys does not host this file.
All sources (13)
The same file was posted more than once. If one link is dead, try the next.
| Channel | Posted | |
|---|---|---|
| @laptexdna | 2 Jul 2020 | Open file on RM Schematics |
| @one5technology | 25 Nov 2020 | Open file on RM Schematics |
| @one5technology | 26 Nov 2020 | Open file on RM Schematics |
| @laptexdna | 25 Jul 2022 | Open file on RM Schematics |
| @cynetitsolution | 3 Mar 2023 | Open file on RM Schematics |
| @generalbios | 27 Sept 2023 | Open file on RM Schematics |
| @generalschematics | 15 Sept 2024 | Open file on RM Schematics |
| @generalschematics | 15 Sept 2024 | Open file on RM Schematics |
| @generalbios | 15 Dec 2024 | Open file on RM Schematics |
| @ShareMan_Electronic_Files | 7 May 2025 | Open file on RM Schematics |
| @schematiclaptopramkushwaha | 11 Sept 2025 | Open file on RM Schematics |
| @smschematics | 26 Sept 2025 | Open file on RM Schematics |
| @schematics_bios | 4 Aug 2026 | Open file on RM Schematics |
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.