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/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s197 Rest the keyboard face down on the trackpad area. Disconnect the keyboard connector from the logic board. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s198 Your laptop should look approximately like this. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s199 Pull the RAM chip out. Repeat this process if a second RAM chip is installed. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s200 Turn the G4 over. Remove the eight T8 Torx screws from the lower case. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s201 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/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s202 Your laptop should look approximately like this. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s203 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/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s204 Disconnect the hard drive ribbon from the logic board using a spudger or the tip of your finger, removing tape as necessary. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s205 To free the hard drive, remove the two T8 Torx screws from the right wall of the battery housing. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s206 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/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s207 Your laptop should look approximately like this. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s208 If your G4 has a CD-RW or Combo drive, the pictures in the following steps will not exactly match your computer. 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. Place the computer on the cloth. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s211 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/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s212 Turn the G4 over. Disconnect the orange DVD ribbon cable from the logic board using a spudger or the tip of your finger /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s213 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/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s214 Turn the G4 over. Using a 5 mm nut driver or needle-nose pliers, remove the hex nut from the modem. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s215 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/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s216 Disconnect the connector cable from the modem. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s217 Remove the single T8 Torx screw located near the silver heat pipe. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s218 Disconnect the three indicated connectors from the logic board. Disconnect the orange PC card cage connector from the logic board. The large multicolor cable may be difficult to free. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s219 Turn the G4 over. Remove the three T8 Torx screws from the logic board. Be sure not to lose the rubber washers protecting the logic board from the lower two screws. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s220 Disconnect the indicated connectors from the logic board, removing tape as necessary. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s221 Carefully lift the logic board up and pull it away from you. 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/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s222 Your laptop should look approximately like this. /Guide/Repair/PowerBook-G4-Titanium-Onyx-Logic-Board/80/all#s223