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这个拆解是不是维修指南。 要维修你的的Apple Extended Keyboard A1243,请使用我们的维修手册

  1. Apple Keyboard A1243 Teardown, Close Look at the Keyboard: 步骤 1 中的图像 1,1
    • The underside of the keyboard is affixed by a layer of adhesive that covers the entire surface. There are no screws holding the rear cover in place.

  2. Apple Keyboard A1243 Teardown, Tools Used: 步骤 2 中的图像 1,2 Apple Keyboard A1243 Teardown, Tools Used: 步骤 2 中的图像 2,2
    • A spludger preferably plastic can be used to pry the rear cover off the keyboard

  3. Apple Keyboard A1243 Teardown, Opening: 步骤 3 中的图像 1,2 Apple Keyboard A1243 Teardown, Opening: 步骤 3 中的图像 2,2
    • Open the front end of the keyboard with a prying tool.

    • Only pry at the front end of the keyboard, as there are easily damaged ribbon cables at the rear of the keyboard.

    • Using a heat gun on low setting can be used carefully to heat the rear cover and soften the adhesive. Work in sections heating and then gradually prying the sections apart.

    • Avoid using too much heat otherwise you will distort or melt the cover or other plastic parts. Do not use excessive force to remove the cover as the alloy is thin and bends easily. The keyboard will be permanently distorted.

  4. Apple Keyboard A1243 Teardown, Disassembly: 步骤 4 中的图像 1,3 Apple Keyboard A1243 Teardown, Disassembly: 步骤 4 中的图像 2,3 Apple Keyboard A1243 Teardown, Disassembly: 步骤 4 中的图像 3,3
    • The main keyboard backplate is held in by dozens of spot welds, the only way to disassemble further is to remove them with a drill!

    • The logic board is secured with philips head screws. Two ribbon cable connect the keyboard to the logic board. Damage to a cable will result in whole sections of keyboard not functioning.

  5. Apple Keyboard A1243 Teardown, Separating front and back: 步骤 5 中的图像 1,2 Apple Keyboard A1243 Teardown, Separating front and back: 步骤 5 中的图像 2,2
    • There are practically no serviceable parts inside the keyboard other than the logic board but even so due to the assembly of the keyboard there are no spare parts available to buy even if you could. There is little practical reason to actually disassemble the keyboard

  6. Apple Keyboard A1243 Teardown, Inspecting Logic Board 1: 步骤 6 中的图像 1,3 Apple Keyboard A1243 Teardown, Inspecting Logic Board 1: 步骤 6 中的图像 2,3 Apple Keyboard A1243 Teardown, Inspecting Logic Board 1: 步骤 6 中的图像 3,3
    • Cypress CY7C63923 (Low-Speed USB Peripheral Controller)

    • ST 95040W (4kbit EEPROM)

    • Cypress CY7C65630-56L (Low Power USB 2.0 Hub)

    • Microchip 2026-1YM (Dual-Channel Power Distribution Switch)

  7. Apple Keyboard A1243 Teardown, Inspecting Logic Board 2: 步骤 7 中的图像 1,3 Apple Keyboard A1243 Teardown, Inspecting Logic Board 2: 步骤 7 中的图像 2,3 Apple Keyboard A1243 Teardown, Inspecting Logic Board 2: 步骤 7 中的图像 3,3
    • The yellow circled element is a Cypress CY7C63923-PVXC, a "Low-Speed USB Peripheral Controller" .

    • The blue circled element is a Cypress CY7C65630, a "Low-Power USB 2.0 Hub Controller".

Roman Seibel

于08/12/12注册

186 声望

撰写一个指南

19条评论

Any hope of replacement of a defective key switch?

Eddie Sutton - 回复

I think I will need to open mine to replace the USB wire.

Marek Novak - 回复

I fried one of the usb port with coil back current, the other port runs well so does the keyboard.

How do I fix that? Is there a fuse to replace?

daslolo - 回复

One day, my keyboard stopped working, keys affected are 5tgb and 6yhn. It guess they are joined inside. No reason at all. No spill. My keyboard is hooked to an unpowered USB hub, which is hooked to my MacbookPro. I use also a logitech wired mouse attached to the USB port. When I arrived last Monday morning to my office with the mac, I plugged everything as described and the problem appeared. Now I don't know that to do to fix it. Some guys recommend springing water on it but it seems some kind of joke. I can't believe I spend so much money in this keyboard and now it doesn't work. A couple of months ago, I realised that the Magic Mouse 2 was another bummer because of it problem tracking the hand movements. I started to doubt about Apple hardware, except for the Macbook Pro, which has 5 years of intense use and never had a problem at all.

Mariano Belgrano - 回复

Yes, washing these types of aluminum apple keyboards with water will usually resolve the problem, just pure water, and a few days of drying… it doesn’t make sense, but I have fixed a dozen of these that way before! It’s no guarantee, but it could resolve it. The reason the keys went out together is that the buttons’ are organized into columns and rows electronically. When the circuit is connected on the sixth column and the second row, that equals a 5 key. Sixth column third row would be the T key, etc. So your problem is not at the keys, but with the column contacts for those two columns. Whether cleaning them will help is anyones guess. Somehow, you have a break in the circuit for those two columns of the keyboard. It sounds like the problem will be on the logic board of the keyboard. Check for hairs or something shorting out any chips, etc.

Albert Min -

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