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Installing MacBook Pro 15" Core 2 Duo Models A1226 and A1260 Lower Case
- Author: Walter Galan
- Difficulty: Difficult
Replacing the metal bottom case.
Sections
- Battery 1 step
- RAM Shield 1 step
- Upper Case 7 steps
- Optical Drive 2 steps
- Logic Board 10 steps
- Lower Case 14 steps
Tools
Tools (continued)
Relevant parts
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Step 8
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Do not yank the upper case off quickly. The case is attached to the logic board via a ribbon cable.
Lift up at the rear of the case and work your fingers along the sides, freeing the case as you go. Once you have freed the sides, you may need to rock the case up and down to free the front of the upper case.
There are four plastic clips above the DVD slot, and another above and to the left of the IR sensor. These clips can be very difficult to disengage without prying. They can also be difficult to re-engage during reassembly.

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Step 9
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Disconnect the trackpad and keyboard ribbon cable from the logic board, removing tape as necessary.
Note: It is possible to replace the hard drive without disconnecting the keyboard from the chassis, but it will need to be held upright to keep it out of the way, while still allowing you both hands to work on the drive removal. Be careful when removing the keyboard-trackpad ribbon cable to ensure that the rear of the upper case is disengaged from the area near the hinge. It is easy to accidentally bend the screw receivers on either side of the keyboard.
Remove the upper case.

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Step 11
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Remove the following 4 screws:
Two 3.3 mm silver Phillips screws on either side of the SuperDrive.
One 4.7 mm silver T6 Torx screw from the top left corner of the drive.
One 6.2 mm black Phillips screw at the top right corner of the drive.
Lift the optical drive up and out of the computer.

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Step 19
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Remove the following 15 screws:
One 4.4 mm black Phillips screw to the right of the ram slot.
Eight 4.7 mm silver T6 Torx screws securing the logic board to the lower case.
One 6.2 mm black T6 Torx screw on the right side of the left fan.
Five 9.4 mm silver T6 Torx screws securing the left and right fans.

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Step 20
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Hold the logic board down with one hand and use your other hand to lift the left fan up from its housing. There is a piece of black tape securing the left fan to the heat sink. Carefully peel this tape up from the heat sink as you lift the left fan up.
Place the left fan above the Airport card. It is not necessary to remove the fan from the computer entirely.
Lift the right fan up and carefully peel up the tape securing the fan to the heat sink as you go.
Remove the right fan from the computer.
If you leave the orange screws on, the heatsink/pipes come out effortlessly, still mounted onto the main board. That way the thermal connections are retained.

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Step 21
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Lift up the left side of the logic board and disconnect the gray and black power cable from the bottom of the board.
Pull the power cable connector parallel to the face of the logic board.
Grasp the logic board at the left side and at the thin section, and rotate the logic board out of the lower case.

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Step 22
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Lower Case
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Lift the heat sink out of the computer.
Peel up the iSight cable from the black tape at the top of the left fan.
Peel up the left ambient light sensor cable from above the left fan, removing tape as necessary.
Remove the left fan 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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Step 23
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Disconnect the two antenna cables attached to the Airport Extreme card.
Apple was kind enough to include a label showing where each color antenna cable plugs in - just make sure to look at this when reconnecting the antenna cables.
If you have a MacBook Pro 15" Core 2 Duo A1226, there are three antenna cables on the Airport card.

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Step 31
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Support the display with one hand while removing the following 3 screws:
Two 9.5 mm silver T6 Torx screws with threads on only part of the shaft on the inside of the display hinges.
One 9.5 mm silver T6 Torx screw with threads on the entire shaft on the outside of the left hinge.
Grasp the display assembly on both sides and lift it up and out of the computer.

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Step 34
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Remove the following 7 screws/standoffs:
Four black T6 Torx screws securing the left I/O board to the lower case.
Two silver T6 Torx screws securing the battery connector to the lower case.
One 4 mm standoff located between the audio jacks.
Lift the left I/O board up from the right side and slide it out of the computer.

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Step 35
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Peel up the orange Kapton tape covering the right thermal sensor. Repeat the same procedure for the left thermal sensor.
Use a spudger to pry the right thermal sensor off the lower case. Repeat the same procedure for the left thermal sensor.
Use a spudger to pry up the PRAM battery off the lower case.
Lower case remains.
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