820-1875 – Apple A1138
The 820-1875 (Apple) motherboard is found in the Apple A1138. The catalog lists 2 files for it: 1 schematic and 2 boardviews.
First posted in August 2021 in Schematics & Boardviews Archive and Cyberlan Electronics.
Schematics 1
Boardviews 1
Board facts
| Board number | 820-1875 |
|---|---|
| Numbering | Apple board number |
| First seen | 2021-08-24 |
| Source channels | Schematics & Boardviews Archive, Cyberlan Electronics |
| About the number | Apple logic boards are numbered 820-xxxx or 820-xxxxx; the trailing letter is the revision. |
Laptops that use 820-1875
- Apple A1138
What these files are for
A schematic is the circuit diagram of the main board: power rails, power-up sequence, component values and net names. It is the reference for measuring voltages and tracing a fault.
A boardview is the component placement map of the PCB: click a part or a net and the viewer highlights where it is and what it connects to. Used together with the schematic to find test points.
Tools to open these files
| Format | What it is | Open with |
|---|---|---|
| .bdv | Honhan .bdv boardview | OpenBoardView, FlexBV or Honhan BoardViewer |
| .rar | RAR archive | 7-Zip or WinRAR |
Questions
Is there a boardview for 820-1875?
Yes, 2 boardview files in .bdv format.
Which laptops use the 820-1875 board?
Files in the catalog link 820-1875 to the Apple A1138.
Where do the download links go?
Each button opens the original public Telegram post the file was shared in. ChambersDesignInc.com only indexes and cross-references those posts.