Use a coin to turn the battery locking screw 90 degrees clockwise. Lift the battery out of the computer. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s796 Remove the four Phillips screws from the memory door. Slide the memory door away from the memory compartment. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s802 Remove the following 8 screws: Two 3 mm Phillips in the battery compartment, on either side of the battery contacts. Two 9 mm Phillips on either side of the memory compartment. Four 16 mm Phillips along the hinge. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s803 Rotate the computer 90 degrees clockwise, so that the power receptacle faces you. Remove the three 3 mm Phillips screws. When replacing these screws, you must place each screw in the correct order. Begin by installing the screw closest to the display hinge, and go out from there. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s804 Turn the computer 90 degrees clockwise so that the hinge faces you. Remove the bottom 5 mm Phillips screw on either side of the hinge (two total). /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s805 Rotate the computer 90 degrees clockwise, so that the ports face you. Remove the three 3 mm Phillips screws. When replacing these screws, you must place each screw in the correct order. Begin by installing the screw closest to the display hinge, and go out from there. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s806 Turn the computer over and open the display. Remove the 4.2 mm 1/16" H 1.5 hex screws in either corner, next to the display (a T6 Torx driver will also do the job nicely). /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s807 This step covers the hardest part to get inside this computer. Take a deep breath and think happy thoughts. Grasp the back corners of the upper case and pull up, disengaging hidden tabs on the sides. Do not pull the upper case off yet; you still need to free tabs in the front of the case. The seam is beneath the plastic molding on the upper case. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s808 There is one latch that stops you from pulling the upper case right off, located on the left side of the optical drive slit. To free the upper case, you will be pulling a thin metal latch toward you, freeing it from the clasp holding it in place. Pry up the left side of the upper case slightly with your hand and wedge a spudger into the seam between the upper case and lower case. Leave the tool in place applying pressure to the upper case for the next step. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s809 Place enough pressure on the upper case to allow you to slide a tool just within the seam between upper case and lower case as shown in the picture. A dentist's hook, push pin, or similar tool will work. Do not yank the upper case off as soon as you free the clasp. The case is attached to the logic board via two ribbon cables. Delicately slip the tip of your tool behind the silver metal latch and pull it forward while pulling up on the case. This may take some effort. Alternatively, you can free the clasp with a small flathead screwdriver through the CD slot. The clasp is 1-3/16 in (3cm) from the left side of the slot. Use the screwdriver to lift out (or press back) the felt lining; then use the screwdriver to pull the clasp (shiny metal) forward to free it from the catch behind it (dull metal). /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s810 Lift the back of the case up 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. Rotate the upper case up and toward the screen, so that the upper case rests against it. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s811 Remove the orange tape securing the trackpad ribbon to the logic board. Disconnect the trackpad ribbon from the logic board. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s812 This is a diagram of the keyboard ribbon clamp connector you will disconnect in the next step. 1) With your fingernails, grasp the locking bar on either side and pull up a small amount (about 1/16" or 2 mm). 2) After disengaging the locking bar, slide the cable out of the connector. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s813 Loosen the keyboard ribbon clamp by pushing the thin black piece toward the screen, using the tips of your fingers. The black piece is very fragile and easily broken. Use care when separating it from the main socket. Slide the grey keyboard ribbon out of the loosened connector. Remove the upper case from the computer. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s814 Remove the two 6 mm long silver Phillips screws from the metal bracket to the right of the hard drive, removing tape as necessary. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s829 Use a spudger to lift the metal bracket out of the computer. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s830 Disconnect the large orange hard drive cable from the logic board, removing tape as necessary. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s831 Deroute the red and black speaker cable from under the fold in the hard drive ribbon. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s832 Lift the hard drive up from the right side and remove it from the computer. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s833 If you have already removed the hard drive or optical drive, your computer may differ slightly from the images in this section. These parts do not affect this procedure. Close the display and turn the hinge side of the computer to face you. Remove the remaining Phillips screw on either side of the hinge (two screws total). /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s841 Open the computer with the display facing you. Use a spudger to pry the bluetooth board from the gap between the battery housing and front of the lower case. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s842 Disconnect the bluetooth antenna cable from the bluetooth board. Deroute the bluetooth antenna cable along the left edge of the computer, removing tape as necessary. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s843 Disconnect the large orange Airport ribbon from the logic board. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s844 Pull the Airport ribbon cable up in order to access the black Airport antenna connector. Disconnect the Airport antenna cable at the black connector, making sure you pull only on the black rubber portion of the connector. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s845 Disconnect the inverter cable from the logic board. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s846 Remove the two pieces of orange tape covering the display data cable and disconnect the cable from the logic board. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s847 Make sure you've freed up all four cables attached to the display assembly, and will pull away easily with the rest of the display. Remove the T8 Torx screw closer to the display on either side of the hinge (two screws total). /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s848 Be sure to support the display with one hand while removing the final two screws. Remove the longer T8 Torx screw remaining on either hinge (two screws total). /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s849 Lift the display off. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s850 If you have already removed the display or hard drive, you may have already removed some of the cables described in this step. You may also ignore their presence in the following images; they do not further affect the disassembly procedure. Disconnect the indicated 14 cables from the logic board, starting in one place and moving around the board. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s854 There should be no cables connected to the top of the logic board at this point. Remove the following 12 Phillips screws from the logic board: Six 4 mm around the edges of the logic board. Two 5 mm securing the right speaker to the logic board (move the speaker off of the logic board). Three 6 mm with wavy washers in the upper, left corner of the logic board. One 4 mm underneath a black bumper in the back right corner of the logic board. One 4 mm screw may not be present on some logic boards. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s855 Two cables still connect to the logic board and must be removed before pulling the board entirely out of the computer. Use a spudger to gently (very gently) pry up the left side of the logic board. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s856 Disconnect the DC-In connector from the left side of the logic board. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s857 Disconnect the battery cable from the front, left corner of the logic board. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s858 Grasp the logic board at the left edge with one hand and at the thinnest section with the other hand. Lift the left edge of the board up to approximately a 30 degree angle (if you don't have your protractor handy, just lift until the DVI port clears the right hinge). Once the logic board clears the ports, slide it out to the left. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s859 Important: when you reinstall a logic board, you'll need to replace the thermal paste that goes between the processor on the logic board and the heat sink. Failure to remove the old paste and apply a new layer can cause the computer to overheat and sustain damage. The following steps refer to replacing the thermal paste between the processor and heat sink; follow these steps only when you are ready to place the logic board in the computer. Use a firm plastic edge to scrape the thermal material off the processor. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s860 Use a firm plastic edge to scrape the thermal material off the heat sink. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s861 Apply a new layer of thermal paste to the copper heat conduit. When replacing the logic board, make sure all cables are routed around and above - not under - it, and to connect the two cables that do go beneath before pushing the board into place. Place the logic board back in the computer, trying not to move it around once the processor has come into contact with the newly-applied thermal paste. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s862 On computers with an ambient light sensor, you will remove an ambient light sensor board instead of a placeholder yellow plastic board. Remove the two black Phillips screws from the yellow plastic board above the USB port on the left side of the computer. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s865 Remove the black Phillips screw on the bottom corner of the left speaker board. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s866 Remove the nut from the screw just in front of the left speaker. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s867 Do not entirely remove the speakers before disconnecting the speaker cable from the sound board. Lift the speaker board up from the computer so that you can access and disconnect the speaker cable from the sound board. Remove the speaker assembly entirely, including the right speaker. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s868 Remove the Phillips screw from each corner of the PC card cage (4 screws total). The two longer screws go on the right side of the card cage. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s869 Lift the PC card cage up from the front, and remove it from the computer. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s870 If you have already removed the hard drive or speaker assembly, your computer may differ slightly from the images in this section. These parts do not affect this procedure. Remove the following 7 Phillips screws attaching the heat sink to the metal framework: Five 5 mm screws scattered around the heat sink. One 6 mm on the front left corner of the heat sink. One 10 mm in the back left corner of the left fan. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s879 Remove the heat sink from the case, minding the left corner, as it tends to catch in the case (the fans will come out with the heat sink). /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s880 Disconnect the 4-pin power cable and orange ribbon from the DC/Sound card. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s881 Remove the T8 Torx screw from the RJ-11 board. Remove the 5 mm standoff that secures the DC/Sound card to the lower case using a nut driver or pliers. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s882 Do not pull the DC/Sound card out entirely. You will be disconnecting the Bluetooth cable in the next step. Lift the DC/Sound card out of the computer and turn it over. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s883 Disconnect the Bluetooth cable from the DC/Sound card, removing tape as necessary. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s884 Use your thumbs to slide the RJ-11 board away from the sound card in the same direction you would disconnect a cable. This is your chance to get out some aggression, as the board will most likely be very tight and requires a good deal of force to remove. Don't get carried away though - don't hold onto the power connector and don't put too much actual force on the card itself. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s885 Your laptop should look approximately like this. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s886 Deroute the RJ-11 board cable from along the edge of the case. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s887 Disconnect the RJ-11 cable from the modem. /Guide/Installing-PowerBook-G4-Aluminum-15-Inch-1-1-5-GHz-RJ-11-Board/239/all#s888