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. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s155 Rest the keyboard face down on the trackpad area. Disconnect the keyboard connector from the logic board. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s156 Your laptop should look approximately like this. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s157 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 "pop" up. Pull the RAM chip out. Repeat this process if a second RAM chip is installed. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s158 Turn the G4 over. Remove the eight Phillips screws from the lower case. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s159 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. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s160 Your laptop should look approximately like this. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s161 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. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s162 Disconnect the hard drive ribbon from the logic board using a spudger or the tip of your finger. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s163 To free the hard drive, remove the two T8 Torx screws from the right wall of the battery housing. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s164 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. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s165 Your laptop should look approximately like this. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s166 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. Carefully peel the adhesive strip away from the DVD drive. The plastic dust shield covering the DVD drive is easily damaged. Try to start at the four corners and work toward the center. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s169 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. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s170 Turn the G4 over. Disconnect both orange ribbon cables from the logic board using a spudger or the tip of your finger. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s171 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. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s172 Turn the G4 over. Using a 5 mm nut driver or needle-nose pliers, remove the hex nut from the modem. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s173 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. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s174 Disconnect the connector cable from the modem. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s175 Turn the G4 over and rest it on a soft cloth. Disconnect the multicolored fan connector and battery connector from the logic board. Disconnect the orange PC card cage connector from the logic board. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s179 Remove the single T8 Torx screw located next to the PC Card cage. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s180 Turn the G4 over. Remove the two T8 Torx screws from the middle of the logic board. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s181 Disconnect the four indicated connectors from the logic board, removing tape as necessary. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s182 Carefully lift the logic board up and pull it away from you. The logic board may catch on the back panel ports liner. If this occurs, use a spudger or non-metal tool to free the logic board. 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. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s183 Your laptop should look approximately like this. /Guide/Installing-PowerBook-G4-Titanium-Mercury-Logic-Board/67/all#s184