Use a coin to rotate the battery-locking screw 90 degrees clockwise. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2425 Lift the battery out of the computer. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2426 Unscrew the three evenly-spaced Phillips screws from along the rear wall of the battery compartment. The screws are captive to the metal memory cover. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2427 Rotate the L-shaped memory cover so it clears the battery compartment opening and lift it up and out of the computer. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2428 Remove the following 3 screws: One 11 mm Phillips in the middle of the case. Two 14.5 mm Phillips. If the screws stick in the case, you can use a magnetized screwdriver to draw them out. The shorter of the three screws goes in the middle. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2434 Remove the following 3 screws from the rear wall of the battery compartment: Two 3 mm Phillips. One 4 mm Phillips on the right side. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2435 Remove the two Phillips screws from either side of the right wall of the battery compartment (not the ones closest to the battery connector). /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2436 Remove the four indicated Phillips screws from the front wall of the battery compartment. When working from the left, remove the 2nd, 4th, 7th and 9th screw. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2437 Remove the following 4 screws from the back of the computer: Two 7 mm Philips on the far sides. Two 10.5 mm Phillips toward the center. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2439 Remove the two Phillips screws from the optical drive side of the computer. It is not necessary to remove the similar screws on the other side of the computer. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2440 There's a trackpad and keyboard ribbon connecting the upper case to the logic board, so don't pull the upper case off entirely just yet. Starting near the display and working around to the front of the computer, pry up on the upper case. The upper case is likely to stick at the connection above the optical drive. If this is the case first free all other sides, then proceed to pull upward on the upper case from either side of the optical drive opening. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2441 While holding up the upper case, pull up the black tab of the silver cable away from its connector. If there is no black tab, you can also use a spudger to gently pry the connector from its housing. This connector is tall, so be sure to pry straight up. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2442 Disconnect the MagSafe board cable from the logic board. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2494 Remove the single Phillips screw securing the left speaker to the lower case. Lift the left speaker out of its housing and set it to the side. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2495 Remove the following 3 screws: Two 7.5 mm Phillips from either end of the left I/O frame. One 9 mm Phillips from the middle of the left I/O frame. Remove the small black plastic spacer at the bottom of the left I/O frame. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2496 Lift the left I/O frame up and out of the computer. Pay attention to the thin metal EMI fingers, as they may catch as you remove the left I/O frame. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2497 Peel up the foil tape between the fan and the optical drive. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2498 Use a spudger to move the gray display data and black speaker cables to the right. This will reveal a silver screw securing the fan housing to the lower case. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2499 Disconnect the orangle optical drive ribbon cable from the logic board. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2500 Peel up the small black rubber cover from the right side of the heat sink. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2501 Disconnect the black fan connector and two temperature sensor connectors from the logic board. If you have a MacBook Core 2 Duo Santa Rosa/Penryn/Early 2009, there is only one temperature sensor. The heat sink in early 2009 MacBooks may look slightly different. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2502 Disconnect the black fan connector and two temperature sensor connectors from the logic board. If you have a MacBook Core 2 Duo Santa Rosa/Penryn/Early 2009, there is only one temperature sensor. The heat sink in early 2009 MacBooks may look slightly different. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2502 Remove the following 6 screws: One 3 mm Phillips on the right side of the fan. One 6 mm Phillips on the left side of the fan. Four 9 mm Phillips securing the heat sink to the lower case. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2503 Remove the following 6 screws: One 3 mm Phillips on the right side of the fan. One 6 mm Phillips on the left side of the fan. Four 9 mm Phillips securing the heat sink to the lower case. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2503 Hold the heat sink with one hand and the fan with your other hand, and lift the heat sink and fan assembly out of the computer. The fan is attached to the heat sink only with a strip of black felt tape, so be sure to remove both parts as a unit 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. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2504 Disconnect the three antenna cables from the Airport card, and the black inverter cable from the logic board. If you have a MacBook Core 2 Duo Santa Rosa/Penryn/Early 2009, there are only two antenna cables and the black inverter cable is in a different location. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2505 Disconnect the three antenna cables from the Airport card, and the black inverter cable from the logic board. If you have a MacBook Core 2 Duo Santa Rosa/Penryn/Early 2009, there are only two antenna cables and the black inverter cable is in a different location. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2505 Disconnect the three antenna cables from the Airport card, and the black inverter cable from the logic board. If you have a MacBook Core 2 Duo Santa Rosa/Penryn/Early 2009, there are only two antenna cables and the black inverter cable is in a different location. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2505 Remove the following 2 screws from the Airport card: One 3 mm Phillips from the left side. One 8 mm Phillips from the right side. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2506 Grasp the Airport card at its top and slide it toward the screen and out of the computer. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2507 Use a spudger to disconnect the left speaker connector from the logic board. Lift the left speaker out of the computer. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2508 Disconnect the display data cable by pulling up on the black plastic pull-tab. If there is no pull-tab on the top of the connector, it may be helpful to use a spudger to disconnect this connector. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2509 Disconnect the newly-revealed hard drive cable from the logic board. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2510 Use a spudger to disconnect the speaker connector and bluetooth connector from the logic board. If you have a MacBook Core 2 Duo Santa Rosa/Penryn, disconnect the PRAM battery cable. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2511 Use a spudger to disconnect the speaker connector and bluetooth connector from the logic board. If you have a MacBook Core 2 Duo Santa Rosa/Penryn, disconnect the PRAM battery cable. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2511 Use a spudger to disconnect the speaker connector and bluetooth connector from the logic board. If you have a MacBook Core 2 Duo Santa Rosa/Penryn, disconnect the PRAM battery cable. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2511 Use a spudger to carefully disconnect the microphone cable from the logic board. You'll want to work from side to side, and slowly wiggle the connector out of its socket. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2512 Deroute the microphone cable from the silver metal clip just above the right RAM slot. This metal clip may not be present on some Santa Rosa/Penryn models. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2513 Use a spudger to carefully pry the battery connector up and disconnect it from the logic board. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2514 Remove the three Phillips screws securing the logic board to the lower case. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2515 Lift the logic board up from the right side, and slide it up and out of the computer. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2516 Turn the logic board over. Peel the PRAM battery up from its location on the logic board, removing tape as necessary. If you have a Macbook Core 2 Duo Santa Rosa/Penryn, the PRAM battery is not located on the logic board. Please skip this step. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2517 Disconnect the PRAM battery cable from the logic board and remove the PRAM battery from the computer. If you have a Macbook Core 2 Duo Santa Rosa/Penryn, the PRAM battery is not located on the logic board. Please skip this step. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2518 Pull back on the metal lever and slide the RAM chip out of the logic board. Repeat this process for the other RAM chip if there are two RAM chips currently installed in your computer. /Guide/Repair/MacBook-Core-2-Duo-Logic-Board-Replacement/528/all#s2519