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Installing iBook G4 14" 933 MHz-1.33 GHz Fan (933 - 1.2 GHz)
- Author: iRobot
- Difficulty: Difficult
Guide for 933 MHz through 1.2 GHz models. Replacing a defective fan is pretty easy and will keep your laptop running cool.
Sections
- Battery 2 steps
- Keyboard 7 steps
- Lower Case 12 steps
- Bottom Shield 2 steps
- DC-In Board 3 steps
- Upper Case 6 steps
- Top Shield 2 steps
- Modem 3 steps
- Heat Sink 5 steps
- Fan (933 - 1.2 GHz) 1 step
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Step 3
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Keyboard
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Pull the keyboard release tabs toward you and lift up on the keyboard until it pops free.
If the keyboard does not come free, use a small flathead screwdriver to turn the keyboard locking screw 180 degrees in either direction and try again.
Flip the keyboard over, away from the screen, and rest it face-down on the trackpad area.

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Step 27
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Upper Case
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Remove the following 11 screws from the bottom of the computer:
Three 3 mm Phillips around the battery compartment. (Some models may only have two screws.)
Three 4.5 mm Phillips along the optical drive bezel. (a magnetic screwdriver may help to lift these screws out)
One 11 mm Phillips in the lower right corner. (if present)
Four 14.5 mm Phillips.

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Step 29
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Before you can yank the upper case off, you must disconnect the trackpad connector, the blue and white power cable, and speaker cable as described in the next steps. Be especially careful with these cables; never pull directly on the cables, but use a spudger to pry up the connector directly.
Lift the upper case and use a spudger or your finger to disconnect the trackpad connector hidden beneath the white plastic tab. Due to model variatons your trackpad connector may be different than the one pictured.

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Step 31
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The connectors at the ends of the cables are attached very firmly to the sockets on the logic board. Pulling directly on the cable will either separate the cable from its connector or the socket from the logic board.
Lift the upper case enough to disconnect the blue and white power cable from the logic board. Using your fingernails or a dental pick, carefully pry the connector from its socket. Make sure you're pulling only on the connector and not on the socket.

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Step 33
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Top Shield
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The screw circled in orange may not be present in some models.
Remove the following 16 screws:
Thirteen 3 mm Phillips.
One 3 mm Phillips. (actual screw not present in image)
Two 4 mm Phillips.
Be sure to fit the screw near the left hinge through the loop in the display data cable, securing the cable to the upper case.
Missing in this photo is the Bluetooth antenna present in some iBooks. It is located at the upper right corner of the battery compartment, just above the 4mm screw. You can see the bracket for the antenna in the photo. It is the two I-shaped holes just above the 4mm screw that must be removed in this step. To remove the antenna, slide it toward the LCD, and tilt it vertically back towards yourself.

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Step 34
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Lift the top shield up from the right side, minding the upper left corner, which may catch on the metal framework.
If your iBook has Bluetooth, as discussed in the previous step, you will need to slide the antenna through the lower I-shaped hole in the shield before completely removing the shield.

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Step 38
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Heat Sink
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Turn the computer over and disconnect the fan cable from the logic board.
If present, remove the 4 Phillips screws securing the fan to the metal framework (one screw is hidden by the hand in the image) and lift the fan out of the computer. If no screws are present, continue on.

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Step 40
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Due to variations between iBook G4 models, your heatsink may have either 5 or 6 screws. We've noted all possible positions for screws in the step below. If there's no screw to remove, then skip to the next screw. Be sure that you remove all necessary screws before attempting to remove the heat sink.
Remove the following 6 screws and 3 nuts from the heat sink:
One 2 mm Phillips extending from a finger on the left edge of the heatsink and adjacent the firewire port (not present on some models)
Three 3 mm Phillips from around the fan (some models may only have 2 screws).
One 3.5 mm Phillips on the left side of the heat sink (not present on some models).
One 4.5 mm Phillips at the top right corner of the heat sink.
One 6 mm Phillips at the lower left corner of the heat sink.
One 4 mm nut from the right side of the heat sink.
Two 4 mm screw nuts with attached springs from either side of the heat sink.

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Step 41
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It may be necessary to soften the thermal paste between the logic board and heat sink. You can soften the thermal compound using a hairdryer. Move the hairdryer back and forth over the ribbed metal section of the heat sink for one minute. At this point, the heat sink should come free easily.
Use a spudger to pry the heat sink up on the left side, near the hard drive.

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Step 42
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Grasp the heat sink in one hand and lift up the hinge grill in the other hand so that you can remove the heat sink from the computer.
If you need to mount the heat sink back into the laptop, we have a thermal paste guide that makes replacing the thermal compound easy.
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