Use your fingers to push both battery release tabs away from the battery, and lift the battery out of the computer. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2045 Remove the three identical Phillips screws from the memory door. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2046 Lift the memory door up enough to get a grip on it, and slide it toward you, pulling it away from the casing. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2047 Remove the two 2.8 mm Phillips screws in the battery compartment near the latch. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2050 Remove the following 6 screws: Two 10 mm T6 Torx screws on either side of the RAM slot. Four 14.5 mm Phillips screws along the hinge. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2051 Remove the four 3.2 mm Phillips screws on the port side of the computer. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2052 Rotate the computer 90 degrees and remove the two 3.2 mm Phillips screws from the rear of the computer. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2053 Rotate the computer 90 degrees again and remove the four 3.2 mm Phillips screws from the side of the computer. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2054 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 some hidden plastic clips that need to be clicked off). /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2055 Disconnect the trackpad and keyboard ribbon cable from the logic board, removing tape as necessary. Remove the upper case. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2056 Disconnect the iSight cable from the logic board by sliding the cable to the left and out of its connector. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2145 Disconnect the inverter, left fan, and left ambient light sensor cables by placing a spudger beneath each cable and lifting up. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2146 Peel up the left ambient light sensor cable from above the left fan, removing tape as necessary. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2147 Remove the following 3 screws: One 6.2 mm black T6 Torx screw from the right side of the fan. Two 9.4 mm silver T6 Torx screws from the left side of the fan. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2148 Lift the lift fan up and carefully peel up the tape securing the fan to the heat sink as you go. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2149 Disconnect the hard drive and ExpressCard connectors from the left side of the logic board. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2154 Disconnect the three 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. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2155 Remove the single black T6 Torx screw located just above the Airport Extreme card. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2156 Lift the Airport Extreme card up and slide it out of its connector. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2157 Deroute the Airport antenna cables from their channel in the left speaker. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2158 Peel up the orange hard drive cable from above the ExpressCard cage. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2159 Disconnect the speaker cable from the corner of the left I/O board. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2160 Lift the left speaker assembly out of its housing and place it in the area previously occupied by the left fan. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2161 Disconnect the large gray and black power cable from the left I/O board. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2162 Remove the following 5 screws/standoffs: Four black T6 Torx screws securing the left I/O board to the lower case. One 4 mm standoff located between the audio jacks. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2163 Lift up the right side of the left I/O board and slide it out of the computer. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2164 Turn the left I/O board over and disconnect the short left I/O board cable. /Guide/Installing-MacBook-Pro-15-Inch-Core-2-Duo-Model-A1211-Left-I-O-Board-Cable/471/all#s2165