820-1381
The 820-1381 board comes from Apple. 2 files are indexed for this board: 2 schematics and 1 boardview.
The earliest file dates from August 2026 (Cyberlan Electronics).
Schematics 2
FileSizeRevAddedSource
LB# 820 1381 ''Board View'' file & schematic diagram
SchematicBoardview
1.2 MB
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Get on Telegram Cyberlan Electronics
Board facts
| Board number | 820-1381 |
|---|---|
| Numbering | Apple board number |
| First seen | 2026-08-02 |
| Source channels | Cyberlan Electronics |
| About the number | Apple logic boards are numbered 820-xxxx or 820-xxxxx; the trailing letter is the revision. |
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 |
|---|---|---|
| PDF schematic | any PDF reader; Sumatra PDF and Foxit handle large schematics well | |
| .rar | RAR archive | 7-Zip or WinRAR |
Questions
Is there a boardview for 820-1381?
Yes, 1 boardview file.
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.