RM Schematics
Laptop motherboard · Apple

A1278 820-2936-B K90I Schematic

This page has the schematic for A1278 820-2936-B K90I, a laptop motherboard from Apple. Printed board number: 820-2936. 5 more files in the library share this board number — they're listed below.

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Brand
Apple
Device
Laptops
Model
A1278 K90I
Board number
820-2936
Contents
Schematic
Available via
Telegram
Original file name
A1278 820-2936-B k90i PDF.rar

Same board number 5

All files for 820-2936

More Apple A1278 files 17

Apple A1278 overview

Other Apple laptops

All Apple files
BoardviewApple A1311 K60 820-3126-AApple · 820-3126BoardviewA1311 820-2494-AApple · 820-2494Schematic820-2494-AApple · 820-2494Schematic820-00939-A J174Apple · 820-00939SchematicA J174 820-00939Apple · 820-00939Boardview820-02098Apple · 820-02098Boardview820-02443Apple · 820-02443BoardviewMacBook Pro 13'' Early 2014 820 2530, 820 2530 A, 820 2530 BApple · 820-2530

Questions about this file

Which board number is this A1278 820-2936-B K90I file for?
It's for board 820-2936. Compare it with the number printed on your PCB before relying on the file. Where to find it.
How do I use the schematic for diagnosis?
Start with the power-sequence and power-rail pages to find where a no-power or no-image fault begins, then locate the parts with a boardview. No-power troubleshooting plan.
Is the download free?
Yes. The button opens post #10715 in the public Telegram channel @schematicslaptop, where the file can be downloaded with a free Telegram account.

Guides for this file

Laptop won't turn on? A schematic-based troubleshooting plan6 min readHow to find your laptop motherboard number5 min readSchematic vs boardview: which one you need for repair3 min read