Introduction

The motherboard - which includes all ports and the DC-In board - is fairly easy to change.

Remove the battery.
  • Remove the battery.

  • Turn the keyboard locking screw so that it is parallel to the space bar.

  • Pull the keyboard release tabs toward you and lift up on the keyboard until it pops free.

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Rest the keyboard face down on the trackpad area.
  • Rest the keyboard face down on the trackpad area.

  • Disconnect the keyboard connector from the logic board.

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Your laptop should look approximately like this.
  • Your laptop should look approximately like this.

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Release the tabs on each side of the RAM chip at the same time. These tabs lock the chip in place and releasing them will cause the chip to ÒpopÓ up.
  • Release the tabs on each side of the RAM chip at the same time. These tabs lock the chip in place and releasing them will cause the chip to ÒpopÓ up.

  • Pull the RAM chip out.

  • Repeat this process if a second RAM chip is installed.

Don't forget to spread the brackets on the sides apart to release the chips.

Calion - Reply

  • Turn the G4 over.

  • Remove the eight T8 Torx screws from the lower case.

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Using your thumbs, slide the lower case away from you.
  • Using your thumbs, slide the lower case away from you.

  • The lower case may stick in the front on a tab just above the center of the DVD drive. Be careful as you work the case off, or you may break the thin strip of plastic just above the drive.

  • Lift the lower case off.

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Your laptop should look approximately like this.
  • Your laptop should look approximately like this.

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Skip this step if your computer does not have an Airport card.
  • Skip this step if your computer does not have an Airport card.

  • Firmly grasp the plastic tab attached to the Airport card and pull up and to the left.

  • Disconnect the antenna cable from the left side of the Airport card.

I'm not sure what the point is for this step. This helped not at all in getting the drive out. Also, the cable is taped down, and must be untaped before the card will come out.

Calion - Reply

Disconnect the hard drive ribbon from the logic board using a spudger or the tip of your finger, removing tape as necessary.
  • Disconnect the hard drive ribbon from the logic board using a spudger or the tip of your finger, removing tape as necessary.

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To free the hard drive, remove the two T8 Torx screws from the right wall of the battery housing.
  • To free the hard drive, remove the two T8 Torx screws from the right wall of the battery housing.

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Remove the hard drive by gently grasping the orange ribbon cable and lifting the left edge up and out of the computer.
  • Remove the hard drive by gently grasping the orange ribbon cable and lifting the left edge up and out of the computer.

  • There are four rubber bumpers that fit over the hard drive screws. Ensure that these bumpers come out when you remove the hard drive.

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Your laptop should look approximately like this.
  • Your laptop should look approximately like this.

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If your G4 has a CD-RW or Combo drive, the pictures in the following steps will not exactly match your computer.
  • If your G4 has a CD-RW or Combo drive, the pictures in the following steps will not exactly match your computer.

  • Before continuing, place a soft cloth on your work surface to rest the computer on. Turn the G4 over, making sure the DVD drive doesn't fall out. Place the computer on the cloth.

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Bend the silver metal EMI clip so that it is vertical. This part may fall out after removing the DVD drive.
  • Bend the silver metal EMI clip so that it is vertical. This part may fall out after removing the DVD drive.

  • The EMI clip is not essential for reassembling the computer. If the clip falls out, don't worry about putting it back in.

You don't actually have to bend the EMI clip. You can use a 2mm or smaller slotted screwdriver to pry the clip up and out.

Sugar Fish - Reply

Sugar Fish was dead-on about using a 2mm slotted screwdriver! But I must say, I’m not sure why this step is here at this point in the guide. I went ahead and removed the clip back in Step 4, after having removed the RAM, with no adverse issues.

Michael Triplett - Reply

Turn the G4 over.
  • Turn the G4 over.

  • Disconnect the orange DVD ribbon cable from the logic board using a spudger or the tip of your finger

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Remove the DVD drive by lifting the right edge up and out of the computer.
  • Remove the DVD drive by lifting the right edge up and out of the computer.

  • If you have a CD or any other object jammed in your optical drive, we have an optical drive repair guide.

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Turn the G4 over.
  • Turn the G4 over.

  • Using a 5 mm nut driver or needle-nose pliers, remove the hex nut from the modem.

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Lift the modem out by pulling up and to the right.
  • Lift the modem out by pulling up and to the right.

  • The plastic shielding on the modem may catch on the computer's case. Rocking the modem from side to side will help free the modem.

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Disconnect the connector cable from the modem.
  • Disconnect the connector cable from the modem.

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Remove the single T8 Torx screw located near the silver heat pipe.
  • Remove the single T8 Torx screw located near the silver heat pipe.

It may be helpful to note that there are two side by side - you want the one holding the bracket to the AirPort cage - it will be on the left as this picture is oriented. A little hard to spot under the edge of the silver shield...

robert - Reply

This is a 4.5mm long screw.

Teovall - Reply

Disconnect the three indicated connectors from the logic board.
  • Disconnect the three indicated connectors from the logic board.

  • Disconnect the orange PC card cage connector from the logic board.

  • The large multicolor cable may be difficult to free.

They aren't kidding about the "large multi color" cable. A pair of hemostats and very careful wiggling will do it - NB: the lower portion of the plug, the white plastic holding the pins upright and separate, actually came significantly up, almost off - watch for that and (carefully, of course) gently press it back down - it sits flush on the board surface.

robert - Reply

Turn the G4 over.
  • Turn the G4 over.

  • Remove the three T8 Torx screws from the logic board.

  • Be sure not to lose the rubber washers protecting the logic board from the lower two screws.

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Disconnect the indicated connectors from the logic board, removing tape as necessary.
  • Disconnect the indicated connectors from the logic board, removing tape as necessary.

Two other connectors need to be disconnected before you can take out the logic board. One is the power connector which is out of the frame of this photo to the bottom right. The other is the audio connector, out of the frame of this photo to the bottom left, on the left side of the board.

Sugar Fish - Reply

Carefully lift the logic board up and pull it away from you.
  • Carefully lift the logic board up and pull it away from you.

  • This step requires some force, but if the logic board will not come up, make sure you have removed all screws and connectors necessary.

  • Remove the logic board from the computer.

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Your laptop should look approximately like this.
  • Your laptop should look approximately like this.

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Conclusion

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

6 other people completed this guide.

Attached Documents

iRobot

Member since: 09/24/2009

1 Reputation

726 Guides authored

One Comment

just finished installing new logic board your instructions were great. but you missed a couple of plugs on the board. thanks for the help.

bill - Reply

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