Ask for the logic board circuit diagram of 400Mhz model

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PowerBook G4 Titanium Mercury

Model M5884 / 400 or 500 MHz G4 processor

25 Questions View all | 3 Parts Shop

墨杨 @hvrywq9naenqq1j

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Posted: Feb 8, 2026

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Ask for the logic board circuit diagram of 400Mhz model

I have a 400Mhz machine. I'm trying to repair a damaged machine with too high voltage. Although it can be turned on, there is a hidden injury. Can anyone provide the circuit diagram and resistance specifications for maintenance?Please provide a link that can be downloaded in China.

Model:M5884

Logic board:820-1251-A

我有一台400mhz机型。我正在尝试维修一台电压过高损坏的机器，虽然可以开机，但是有暗伤，有人可以提供检修的电路图与电阻规格吗。请提供一个可以在中国下载的链接

Model:M5884

Logic board:820-1251-A

Answer this question I have this problem too

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livfe @livfe Rep: 8k 33 42 8 · Answer 1 · 2026-02-08T05:07:57-07:00

livfe @livfe

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Posted: Feb 8, 2026

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I found Powerbook G4 schematics & This one if that helps? Not sure if they match your exact model though.

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3 Comments:

@livfe

I am afraid this page cannot be opened in China.Is there anyone else?

Feb 8, 2026 by 墨杨

@hvrywq9naenqq1j Is good if we know the exact board number for the model.

A1025 A1107 A1138 ..... Serial number? https://everymac.com/systems/apple/power... ? There should be plenty of places in Shenzhen that you can search for in Baidu that can find the schematics there?

Feb 8, 2026 by livfe

@livfe

Model:M5884

Logic board:820-1251-A

Feb 8, 2026 by 墨杨

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PowerBook G4 Titanium Mercury

Ask for the logic board circuit diagram of 400Mhz model

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