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Apple Extended Keyboard II Teardown

作成者： afischer15 (と他の投稿者)
公開日: May 21, 2015
  • コメント: 9
  • お気に入り: 7
  • 閲覧数： 17.3千

Apple Extended Keyboard II Teardown

作成者： afischer15 (と他の投稿者)
公開日: May 21, 2015
  • コメント: 9
  • お気に入り: 7
  • 閲覧数： 17.3千

分解

はじめに

Hey, /u/afischer15 is still working on this. Also these photos ALL need serious touching up.

必要な工具と部品

この分解は修理ガイドでは ありません。 お持ちのApple Extended Keyboard IIを修理する際は、iFixitの修理ガイドをご利用ください。

  1. Apple Extended Keyboard II Teardown, The Apple Extended Keyboard II: 手順 1、 3の画像 1 Apple Extended Keyboard II Teardown, The Apple Extended Keyboard II: 手順 1、 3の画像 2 Apple Extended Keyboard II Teardown, The Apple Extended Keyboard II: 手順 1、 3の画像 3

    • Ahh, the Apple Extended Keyboard II. Some argue it's the best keyboard ever made. I'm just here to tear it down. Some specs:

    • Model No. M0312 and M3501

    • Manufactured by Alps Electric or Mitsumi in Japan, Ireland, Mexico, or The United States

    • Plate-mount Alps cream dampened, Alps White, Alps Salmon, or Mitsumi White switches

    • The Caps Lock is a special locking switch - it stays down, just like a typewriter!

    • Two Apple Desktop Bus (ADB) Ports

    • 108-key (ANSI) and 109-key (ISO) layouts

    • PBT Keycaps (well, except for the spacebar)

    編集

  2. Apple Extended Keyboard II Teardown: 手順 2、 2の画像 1 Apple Extended Keyboard II Teardown: 手順 2、 2の画像 2

    • Here's the keyboard we will be working on today. She's not beautiful, but she's mine.

    • My AEKII is a US made with Alps switches.

    • Be extremely careful when working with vintage plastics. They are very brittle and can break easily.

    • While the keys are PBT plastic, the case and spacebar are ABS. ABS plastics yellow over time.

    • Interestingly, this keyboard came with a number of plastic overlays that sat over the function keys to show their, well, function. Often you will find the area around the function keys has yellowed much less than the rest of the keyboard, as seen in photo 3.

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  3. Apple Extended Keyboard II Teardown: 手順 3、 3の画像 1 Apple Extended Keyboard II Teardown: 手順 3、 3の画像 2 Apple Extended Keyboard II Teardown: 手順 3、 3の画像 3

    • The keyboard is held in by just one philips head screw on the back! Flip over your keyboard and unscrew that bad boy.

    • Once unscrewed, flip over the keyboard and release the clips from the top. A plastic opening tool may be helpful, but they are fairly loose.

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  4. Apple Extended Keyboard II Teardown: 手順 4、 3の画像 1 Apple Extended Keyboard II Teardown: 手順 4、 3の画像 2 Apple Extended Keyboard II Teardown: 手順 4、 3の画像 3

    • Remove the top of the case from the keyboard.

    • Say hello to the keyboard switches!

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  6. Apple Extended Keyboard II Teardown: 手順 5、 3の画像 1 Apple Extended Keyboard II Teardown: 手順 5、 3の画像 2 Apple Extended Keyboard II Teardown: 手順 5、 3の画像 3

    • The two ADB connectors need to be removed from their brackets.

    • Use a fingernail or a spudger to push the surface mount port upwards.

    • Don't just shove up the port - it's delicate. Guide it up with your fingers slowly.

    • When it's possible, grab the top of the green PCB and lift the board out of it's small mount.

    • Repeat this for both ports.

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  7. Apple Extended Keyboard II Teardown: 手順 6、 3の画像 1 Apple Extended Keyboard II Teardown: 手順 6、 3の画像 2 Apple Extended Keyboard II Teardown: 手順 6、 3の画像 3

    • Two plastic tabs hold the keyboard's PCB and switches in place.

    • Use your thumbs to carefully press the tabs backwards. Reach under with your forefingers to release the board from the clips.

    • Lift the entire PCB assembly up and away from the keyboard case.

    • Be sure to lift up and out, as there are five small sets of clips gripping the bottom.

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  8. Apple Extended Keyboard II Teardown: 手順 7、 3の画像 1 Apple Extended Keyboard II Teardown: 手順 7、 3の画像 2 Apple Extended Keyboard II Teardown: 手順 7、 3の画像 3

    • Now we can take a closer look at the PCB!

    • The brains of this keyboard is a Toshiba TC4515BP binary controller.

    • A Fairchild CD4515BCN Decoder

    • A GD54/74LS04 Hex Inverter

    • 3 green indicator LEDs

    編集

  9. Apple Extended Keyboard II Teardown: 手順 8、 3の画像 1 Apple Extended Keyboard II Teardown: 手順 8、 3の画像 2 Apple Extended Keyboard II Teardown: 手順 8、 3の画像 3

    • Remove the spring bar from the foot.

    • Release three sets of clips from the foot by pressing outward while lifting up. The back will need to be bowed out in order to remove the larger bump used as a control switch in the center.

    • It is very easy to break a tab - I had a casualty doing this teardown :[

    • Lift the foot up and away from the case. It should easily separate into two parts.

    編集

  10. Apple Extended Keyboard II Teardown: 手順 9、 3の画像 1 Apple Extended Keyboard II Teardown: 手順 9、 3の画像 2 Apple Extended Keyboard II Teardown: 手順 9、 3の画像 3

    • Remove the protective foil by releasing seven small tabs.

    • This is easiest to do if you start from one side, apply downward pressure, and continue to each subsequent set of clips.

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  11. Apple Extended Keyboard II Teardown: 手順 10、 2の画像 1 Apple Extended Keyboard II Teardown: 手順 10、 2の画像 2

    • Remove a small rubber cap from a small hole.

    • I have no idea what this is for.

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  12. Apple Extended Keyboard II Teardown: 手順 11、 3の画像 1 Apple Extended Keyboard II Teardown: 手順 11、 3の画像 2 Apple Extended Keyboard II Teardown: 手順 11、 3の画像 3

    • Remove the rubber feet from the base of the board and foot. Just pull up!

    編集

  13. Apple Extended Keyboard II Teardown: 手順 12、 3の画像 1 Apple Extended Keyboard II Teardown: 手順 12、 3の画像 2 Apple Extended Keyboard II Teardown: 手順 12、 3の画像 3

    • All done!

    • To reassemble the keyboard, follow this guide in reverse order.

    • Again, note that vintage plastic is very brittle. Be very careful with your tabs - I lost one!

    • Bye bye, tab. Good thing there were two of you.

    編集

作成者

1人の作成者と共同作成されました。

afischer15

メンバー登録日: 04/06/11

214 ポイント

2のガイドは作成済み

バッジ: 4

+1 以上のバッジ

3件のガイドコメント

Super helpful guide! I recently restored an old AEK2 that had a bad “C” key. With this guide, I was able to easily take it apart and found out that the key was oxidized and bad. Now that my keyboard has a new keyswitch, I can use it with my modern Macs.

Krishna Sadasivam - 返信

Hi. Any hint about all 3 leds always lit and not working?

Paolo - 返信

Yes, you need to change three electrolytic capacitors on the PCB. Those are 1uF 50V caps, but you can use lower voltage ones (like 16V) as the voltage is just 5V.

You can also try plugging the keyboard for like an hour and if the LEDs go out and keyboard starts working, then it is certain that the caps are going out.

oldnwstf -

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