Введение

The iMac G3 was Apple's brand new all-in-one Macintosh. It had five different colors of translucent plastic that it was available in: Blueberry, Lime, Strawberry, Grape, and Tangerine, these were known as the "5 Flavors." The iMac "i" standing for internet, was very capable, it had built in LAN, IR(this was removed in later models), and a 233Mhz, 266Mhz, or 333Mhz PowerPC 750 (G3) CPU, and a built in 15" CRT screen. This computer paved the way for modern Macs.

The iMac G3 M4984 uses PC100 laptop-style memory. Some models support a maximum of 256MB while others support a maximum of 512MB, this is entirelly dependent on the firmware of the machine.

The iMac G3. This was a great computer for the time, and had plenty of features.
  • The iMac G3. This was a great computer for the time, and had plenty of features.

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Start by flipping the iMac upside-down. It may help to lay it on a towel, so you don't damage the screen, or scratch the face.
  • Start by flipping the iMac upside-down. It may help to lay it on a towel, so you don't damage the screen, or scratch the face.

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  • Remove this Phillips screw.

  • Using a flathead screwdriver, work your way around the bottom cover, until it comes off.

  • Then, lift the bottom cover up and out, and set it aside.

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  • Now, remove the DB-15 Video connector from the logic board.

  • It may be helpful to use a Phillips screwdriver to remove the thumbscrews.

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  • Remove the power cable from the logic board assembly.

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  • Remove the front panel connector.

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  • Now, remove these Phillips screws.

  • Now, grab the logic board assembly by the piece of plastic, and lift it out.

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  • The logic board assembly. This is the heart of the computer, it contains the motherboard, CPU, RAM, V-RAM, PRAM battery, the hard drive, and the optical drive.

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  • Now, it's time to remove the RAM.

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  • Remove the CPU shield, this will reveal the "top slot". This is the user-serviceable RAM slot, though there is a a second slot of RAM under the CPU card.

  • The iMac uses PC100 Laptop Ram, and according to Apple, it supports up to 256MB RAM (2X128MB) but unofficially. Some later models can support 512MB (2X256MB).

  • Push the tabs out, and the RAM should pop up, then pull the ram out.

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  • RAM (bottom slot).

  • Remove the CPU Heatsink.

  • Use a flathead screwdriver. Remove the heatsink clip, it will pop off, and may get lost if you don't keep track of it.

  • Remove the heatsink revealing the CPU, then lift the CPU card up, and it should come free with a little tug.

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  • Removing the CPU Card:

  • Lift the card out by this end!

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  • Now, flip the card over.

  • This will reveal another stick of laptop PC66.

  • This is most likely a 32MB Stick, because the iMac shipped standard with only 32MB of RAM.

  • Now, remove it by pushing the tabs, it should pop up, and you can set it aside.

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  • The RAM.

  • The iMac supports two pieces of PC66 laptop RAM, though it can use PC100 and PC133 (laptop size of course).

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Заключение

To reassemble your device, follow these instructions in reverse order.

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Chris Green

Участник с: 11.10.2009

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