RM Schematics
Laptop motherboard · Apple

820-01521 J140 Mlb Bttf 051-04039 2.0.0 Schematic

This page has the schematic for 820-01521 J140 Mlb Bttf 051-04039 2.0.0, a laptop motherboard from Apple. Printed board number: 820-01521. 7 more files in the library share this board number — they're listed below.

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Brand
Apple
Device
Laptops
Model
J140
Board number
820-01521
Contents
Schematic
File size
3.9 MB
Posted
Original file name
820-01521 j140_mlb_bttf_051-04039_2.0.0 PDF .pdf

Uploader's note

820-01521 j140 mlb bttf 051-04039 2.0.0 Schematics

Same board number 7

All files for 820-01521

More Apple J140 files 1

Apple J140 overview

Other Apple laptops

All Apple files
Schematic820-02536Apple · 820-02536BoardviewMacBook Pro A2159 820-01598Apple · 820-01598BoardviewApple Macbook Pro Retina 13” A1502 820-4924-AApple · 820-4924BoardviewA1502 820-3476-AApple · 820-3476SchematicA1502 820-3476-AApple · 820-3476SchematicApple MacBook Pro Retina 13' A1502 X304 MLB 051 1573 820 4924 12Apple · 820-4924BoardviewApple MacBook Air M1, 2020 A2337 - 820-02016 - 051-05392Apple · 820-02016BIOSApple 820-2223-A Working BIOS 100%Apple · 820-2223

Questions about this file

Which board number is this 820-01521 J140 Mlb Bttf 051-04039 2.0.0 file for?
It's for board 820-01521. 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 #5462 in the public Telegram channel @cynetitsolution, 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