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Service Source iBook G4

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1. Service Source iBook G4 iBook G4 iBook G4 Early 2004 Updated July 1 2005 2003 Apple Computer Inc All rights reserved Service Source Take Apart iBook G4 iBook G4 Early 2004 2003 Apple Computer Inc All rights reserved General Information Overview To easily distinguish this computer from previous iBook models note these characteristics IBook G4 identifier on display bezel Slot load optical drive e Mac OS X version 10 3 operating system General Information iBook G4 Take Apart 2 The ports on the left side of the computer are e RJ11 modem port Ethernet port FireWire port e Two USB ports External display connector Headphone port H z MU T l F ED anae This table shows the iBook G4 product configurations at initial product introduction Display Size 12 1 inch 12 1 inch 14 1 inch 14 1 inch Video RAM 32 VRAM 32 VRAM 32 VRAM 32 VRAM Processor 800 MHz 800 MHz 933 MHz 1 GHz Optical Drive CD ROM Combo DVD Combo DVD Combo DVD ROM CD RW ROM CD RW ROM CD RW Hard Drive 30 GB 30 GB 40 GB 60 GB Memory 128 MB RAM 256 MB RAM 256 MB RAM 256 MB RAM For servicing the 14 1 inch models refer to the iBook G4 14 inch service manual This table shows the iBook G4 Early 2004 product configurations at initial product introduction Display Size 12 1 inch 14 1 inch 14 1 inch Video RAM 32 VRAM 32 VRAM 32 VRAM
2. Try different USB device on same port iBook G4 12 inch Late 2004 Troubleshooting 7 8 Eliminate chain by plugging in only one peripheral 9 Replace logic board Sound Distorted sound from speakers 1 Verify sound is correct with external speakers headphones If sound is correct replace top case Verify speaker cables are inserted correctly and check cables for damage Check balance in System Preferences Sound Output Compare same sound with two different units to make sure that sound is actually distorted Replace top case Replace logic board No sound from speaker s 1 Use the Software Update control panel to verify that the latest audio update has been installed Press the F3 key with the fn key pressed and not pressed to verify that mute mode is not enabled Press the F4 or F5 key with the fn key pressed and not pressed to check the volume setting Verify no external speakers or headphones are plugged in Shutdown computer and restart Reset PRAM Press the power button then hold down the Option Command P R keys until you hear the startup chime at least one additional time after the initial startup chime Verify that the speaker cable is connected properly to logic board and check cable for damage Replace top case Replace logic board Related articles 75146 iBook Audio Update 1 3 6 Document and Software 58463 iBook Sound Capabilities 8 iBook G4 12 inch Late 2004
3. 5 Warning Handle the optical drive at the sides only Do not touch or press anywhere else on the drive Without straining any cables tilt up the optical drive and lift it out the drive Optical Drive iBook G4 Take Apart 100 6 Remove the two identical screws holding the cable bracket to the optical drive 7 Remove the cable bracket Note When reassembling the computer transfer the cable bracket to the replacement drive 8 Peel off the tape from the optical drive and disconnect the ribbon cable Note When reassembling the computer transfer the ribbon cable to the replacement drive 101 iBook G4 Take Apart Optical Drive 9 Remove the screw holding the mounting bracket to the bezel 10 Remove the screws that hold the mounting bracket to the optical drive Important When reassembling the computer transfer the mounting bracket to the replacement drive Replacement Warning Make sure you use the shorter screw to secure the mounting bracket to the bezel Optical Drive iBook G4 Take Apart 102 11 Caution The bezel and optical drive case is a soft material Be especially careful when removing the bezel from the optical drive With the pointed end of a black stick gently press the three tabs and tilt the bezel up and off of the drive 12 Install the replacement optical drive and reassemble and test the computer Replacement Note When installing the replacement optical drive ali
4. Le TRU OL Ib 89 iBook G4 Take Apart Modem iBook G4 Early 2004 3 Carefully grasping the ends of the modem board and shield lift them straight up to disconnect them from the logic board Modem iBook G4 Early 2004 iBook G4 Take Apart 90 5 Install the replacement modem and reassemble and test the computer Replacement Note Before installing the replacement modem make sure the modem flex cable tab is between the shield and the board e no cables are blocking the modem connector on the logic board 91 iBook G4 Take Apart Modem iBook G4 Early 2004 Replacement Caution Handle the modem by the edges only When securing the modem to the logic board press only on the rectangular area highlighted in green in the following image that is directly over the modem connector Modem iBook G4 Early 2004 iBook G4 Take Apart 92 Bluetooth Tools Soft cloth e 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Note To organize the screws you remove from the computer use a tray with divided compartments such as a plastic ice cube tray Part Location Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card e Bottom case e Bottom shield 93 iBook G4 Take Apart Bluetooth e DC in board e Top case e Top shield Procedure 1 With the computer on a soft cloth dis
5. Hard Drive Tools Soft cloth 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Torx T8 screwdriver Note To organize the screws you remove from the computer use a tray with divided compartments such as a plastic ice cube tray Part Location Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card 79 iBook G4 Take Apart Hard Drive Memory card Bottom case Bottom shield e DC in board e Top case e Top shield Procedure 1 With the computer on a soft cloth note the location of the hard drive and how the ribbon cable is routed 2 Tilt up the computer assembly and disconnect the hard drive cable from the underside of the logic board 3 Important To avoid pinching the cable perform the remaining steps with the end of the cable hanging free over a table edge Hard Drive iBook G4 Take Apart 80 4 Remove the two identical screws at the hard drive bracket 1 unes Bs ao yi r Tiii garhi nen aan LE 4789 ICETA F 13 Hi sa lE LITIR DORE ES F E j a LI mE UELL i EL J b f m HINI Jani j BEC EEEF Tee te Pade j m ae A Fa l sewide rt 1FEIEn l bei Ere z r 1 Tc Be ET a an a ga E re PCT d Pa m baT ee a Il ui Ten E 5 From the bracket side tilt up the hard drive and hold it by the sides
6. Rotate them until they sit flat against the bottom case 4mm Bottom Case iBook G4 Take Apart 30 6 Remove the two identical Phillips screws next to the battery connector 31 iBook G4 Take Apart Bottom Case 7 Note the locations of the slots on the bottom case pictured below The computer frame has tabs that fit into slots within the bottom case six tabs in front two on each side three in back When using a black stick to pry off the bottom case it helps to know where the slots are as you free the tabs from the slots a Slots Slats Slabs a Slabs 8 Inthe battery compartment lift up the corner of the bottom case and use a black stick or jeweler s flat blade screwdriver to gently pry up the slot from the inner tabs on the frame Bottom Case iBook G4 Take Apart 32 9 Starting at the battery compartment use a black stick to carefully pry up the bottom case from the computer 10 Warning To avoid damaging the sleep light and other delicate components do not insert the black stick too far into the computer as you free the bottom case from the computer Use just the tip of the black stick to pry up the bottom case 11 Carefully work the black stick around the corners of the bottom case 33 iBook G4 Take Apart Bottom Case 12 The bottom case fits snugly Use moderate force to remove the tabs from the slots 13 Loosen the tabs from the slot load area last Pull up on the port side of
7. Three beeps means that no RAM banks passed memory testing If a RAM card is installed in the expansion slot remove it and put in known good and compatible RAM and restart If symptom does NOT repeat replace RAM card If symptom repeats replace logic board If no RAM card is installed replace logic board Computer beeps four times at startup 1 3 Four beeps indicates a bad checksum for the remainder of the boot ROM The ROM which is located on the logic board is bad If a RAM card is installed in the expansion slot remove it and put in known good and compatible RAM and restart If symptom does NOT repeat replace RAM card If symptom repeats replace logic board If no RAM card is installed replace logic board Related articles 58442 Power On Self Test Beep Definition Part 2 111772 iBook Dual USB Beeps Are Heard at Startup one to four beeps iBook G4 12 inch Late 2004 Troubleshooting 3 Hard Drive Hard drive will not initialize 1 2 Boot from iBook Software Install CD and see if the hard drive mounts on the desktop Boot from the Mac OS X software install CD Under the File menu select Disk Utilities and initialize the disk or run Disk First Aid If no hard drive is found in Drive Setup verify the hard drive cable connections Replace hard drive cable Replace hard drive Important If the computer is under warranty and data recovery is required refer to Article 31077
8. Hard Drive Data Recovery amp Warranty Implications for important information Replace logic board The internal hard drive does not spin 1 ee io oe ee ae a IN Disconnect any connected peripherals Try Known good power outlet Try kKnown good power adapter and power cord Boot from a Mac OS system CD Verify Drive Setup does not recognize the hard drive Verify cable connections Replace hard drive cable Replace hard drive Noisy hard drive Some sounds such as ticking or a rotational noise are normal Refer to Knowledge Base article 30593 PowerBook Hard Drives and Noise Keyboard No response from any key on keyboard 1 2 Remove any connected peripherals Boot from a Mac OS system CD to verify that it is not a software problem 3 Turn off the computer Disconnect the keyboard connector and inspect connectors 4 iBook G4 12 inch Late 2004 Troubleshooting Symptom Charts Symptom Charts 4 Replace keyboard 5 Replace logic board The keyboard lock is damaged or won t lock 1 Verify that keyboard is installed properly so the lock lines up with the notch in the top case 2 Replace keyboard Keycap pops off 1 If the keycap is not broken it can probably be reinstalled To replace the keycap refer to Knowledge Base article 88106 PowerBook G4 Keycap Replacement 2 Replace keyboard Modem No modem dial tone 1 Check that the correct modem is selected In Mac OS X check N
9. Top Shield 922 6427 Hard Drive 30 GB 661 3250 40 GB 661 3249 60 GB 661 3248 ad Flex Cable Hard Drive 922 6124 I O Bezel 922 6140 lt Modem 922 6430 TT Stiffener Part of TrackPad Rework Kit 076 1078 Keyboard US 922 6132 6462 Top Case 922 6425 RAM Shield 922 6141 Bluetooth Board 922 5764 Bluetooth F n Antenna 922 6362 922 6126 Heatsink 922 6365 Flex Cable Optical Logic Board e Er Bracket 661 3188 n Hard Drive ER 922 6139 Bracket T Flex Cable 922 6145 _ TT Frame Optical Drive 922 6363 SuperDrive 661 3256 CD ROM 661 3257 Combo 661 3255 Bottom Case 922 6148 Battery X 661 2994 iBook G4 Views 3 iBook G4 Early 2004 Display Exploded View Display Housing 922 5573 Shield LCD Panel 922 5021 LVDS Cable 922 6424 LCD Flat Panel Display 661 3310 Inverter Board 922 5019 Antenna Kit 922 6133 Inverter Reed Switch Cable 922 6134 Bezel Brace 922 5015 Display Bezel 922 6426 Clutch Cover 922 6152 4 iBook G4 Views
10. e Modem e Display module Display Clutch Cover iBook G4 Take Apart 146 Procedure Important Although the display pictured in this section may appear different from the display you are working on the steps are the same 1 With the display module lying face up on a soft cloth use either a 5 32 hex driver or a Torx T6 screwdriver to remove the four screws two on each side from the display housing Emma 8mm s L A r pe 1 a i ta L r i Pe FE i Ja T p 8mm fi pe Te Fes _ gir a 1 2 Using a black stick pry up the bezel from the display housing Carefully work the black stick around the outer perimeter and corners of the bezel 147 iBook G4 Take Apart Display Clutch Cover 3 Warning When lifting the assembly be careful not to strain the cables With the bezel assembly loosened grasp the display clutch cover and raise the assembly off of the display housing ui at Display Clutch Cover iBook G4 Take Apart 148 5 Peel up the tape if it covers the two screws at the clutch Remove the two Phillips screws i r ia r a ii M e otitl i E RE r 6 Tilt up the display assembly and pull straight down on the display clutch cover Note There are two small thin plastic clutch caps that slide into the ends of the clutch cover The clutch caps might fall off as you remove the clutch cover Be careful not to lose the clutch caps Note The clutch caps are mirror images of each
11. AirPort antenna cable out of the slot in the RAM shield 11 Locate the keyboard cable connector 12 Firmly grasp the cable and carefully pull it straight up until the connector releases Important Pull straight up do not twist or pull the cable sideways Note If necessary use your fingers to pry up the connector from side to side Keyboard and RAM Shield iBook G4 Take Apart 18 13 Install the replacement keyboard RAM shield and AirPort Extreme Card if used Replacement Note Make sure the antenna cable fits into the slot in the RAM shield and insert the lower end of the RAM shield in the keyboard well first ELLE ii i l ii i ETA KETAT LL ial pe LY LA LS A F re F w it i iil Pe mi LE LE il ess coeeoe ee ee 28 aire e eee eee ee sloee ee eee eecet ee Joe eee TEREE ee Pee oe EG CNRS 19 iBook G4 Take Apart Keyboard and RAM Shield Make sure the replacement keyboard is firmly seated Flip the keyboard back toward the keyboard opening in the case e Hold the keyboard at a 45 degree angle above the keyboard opening and insert the tabs on the bottom edge of the keyboard into the slot under the edge of the Opening Important Make sure that all the tabs are seated and that the keyboard rests flush against the edge of the opening Lay the keyboard flat into the keyboard opening Pull down on the keyboard release tabs and then press down on the top
12. S Video and Composite adapter No video on an external device 1 Make sure you are using the S Video and Composite adapter cable 2 Verify TV or VCR is set up properly with correct source 3 Try different TV or VCR Check owner s manual for TV or VCR iBook G4 12 inch Late 2004 Troubleshooting 11 4 Replace adapter cable 5 Replace logic board The display is rolling PAL instead of NTSC 1 Make sure you are not using Apple s A V Video Cable Make sure you are using the S Video and Composite adapter cable In Mac OS X go to the Displays system preference to change the setting Try a different TV or VCR Try a different adapter cable Or ie TR Replace logic board Display shows ghosting signal reflection 1 Verify that cables are correctly installed and firmly seated 2 Replace video adapter Video VGA adapter No video on an external device 1 Verify monitor that is used in testing is known good and is supported by this computer Try Known good VGA adapter 2 3 Replace logic board 4 Replace VGA adapter cable 5 Replace logic board Display shows ghosting signal reflection 1 Verify that cables are correctly installed and firmly seated 2 Replace video adapter Misc Symptoms The computer runs with battery but not with the power adapter plugged into wall outlet 1 Try known good power outlet 2 Try known good power adapter and power cord 3 Reset the power manager by pre
13. board e Top case e Top shield Modem iBook G4 iBook G4 Take Apart 84 Procedure 1 Warning When removing the modem be careful not to strain the modem cable or shields 2 Remove the two screws from the modem board US al y Mioma Ws Bh T FAR 85 iBook G4 Take Apart Modem iBook G4 4 Tilt up the modem and metal shield to remove them from the computer 5 Install the replacement modem and reassemble and test the computer Replacement Note Note that the modem fits inside the metal shield Modem iBook G4 iBook G4 Take Apart 86 Replacement Note Before installing the replacement modem make sure no cables are blocking the modem connector on the logic board 87 iBook G4 Take Apart Modem iBook G4 Modem 1Book G4 Early 2004 Tools Soft cloth 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Part Location Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card Bottom case _ Bottom shield e DC in board e Top case e Top shield Modem iBook G4 Early 2004 iBook G4 Take Apart 88 Procedure 1 Warning When removing the modem be careful not to strain the modem cable or shield Do not apply pressure to the modem Read all of the procedure before removing and replacing the modem 2 Remove the two screws from the modem board
14. connects the heatsink plate to the fan plate is in place with the single screw Heatsink iBook G4 Early 2004 iBook G4 Take Apart 122 Replacement Note Check the logic board If any part of the thermal pads remain on the logic board carefully remove them with a black stick i T n eee SS oe 3 mm 1 T STE TTT ae s a Se us ri i un a M i ts mi 3 La E P Mas z iy praia roe ge 7 A p a i fi i all pE fi E Ti Ed T FE i Li a SE ee tr Le L j Hiji i EX T TPR was II PA a ie EE ee a ae Ja T 1 ry rel 6 Install the replacement heatsink and reassemble and test the computer 123 iBook G4 Take Apart Heatsink iBook G4 Early 2004 Logic Board Tools Soft cloth e 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Note To organize the screws you remove from the computer use a tray with divided compartments such as a plastic ice cube tray Part Location Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card Logic Board iBook G4 Take Apart 124 Bottom case Bottom shield e DC in board e Fan e Top case Sleep light board disconnect connector only e Top shield I O bezel e Hard drive Modem e Heatsink Procedure Warning Flexing the logic board can break solder joints to components T
15. date and time using the Date amp Time control panel Check trackpad cable and connection to the logic board see separate Top Case replacement instructions for location under RAM shield Replace top case Replace logic board iBook G4 12 inch Late 2004 Troubleshooting 13 The cursor intermittently does not move or moves erratically Note User must touch with only one finger at a time and point directly down on the trackpad surface 1 2 8 9 Clean trackpad surface with computer off using a non static inducing material Reset the power manager by pressing the key combination Control Option Shift power Warning Make sure you do not hold down the fn key when resetting the power manager Warning Resetting the power manager means you will also need to reset the date and time using the Date amp Time control panel Reset PRAM Press the power button then hold down the Option Command P R keys until you hear the startup chime at least one additional time after the initial startup chime Remove and reseat memory card Try unit on battery power If problem goes away replace power adapter Place a Mac OS system CD in the optical disc drive press the start button and hold down the C key Check the cursor movement to see if the problem is software Check trackpad cable and connection to the logic board see separate Top Case replacement instructions for location under RAM shield Replace top c
16. determine whether or not the display has an acceptable number of pixel anomalies follow the steps below 1 Set the display image to one of the following colors all white display all red display all green display or all blue display 2 Using a jeweler s loupe pocket microscope or other magnifying device identify and count each subpixel anomaly e Bright subpixel anomaly subpixel that is always on e Dark subpixel anomaly subpixel that is always off 3 Important Check the number of subpixel anomalies with the following chart Acceptable Number of Subpixel Replace the LCD Panel Anomalies Combination Bright Dark Combination 12 1 to 15 2 Symptom Charts up to 7 4 or more 6 or more 8 or more 4 Ifthe number of subpixel anomalies exceeds the acceptable number listed in the chart replace the LCD panel 5 Ifthe number of subpixel anomalies is acceptable explain to the customer that the pixel anomalies are within specifications and no repair is necessary Important Do not release the specifications to customers Instead inform them that a certain number of subpixel anomalies is considered acceptable and these factors apply to all manufacturers using LCD technology not just Apple products Scrambled or distorted video Check for video on external display e If video is fine on external display replace LVDS cable e If video is scrambled or distorted on external display replace LCD panel Video
17. fn key when resetting the power manager Warning Resetting the power manager means you will also need to reset the date and time using the Date amp Time control panel 6 Replace logic board Short battery life Refer to Knowledge Base article 114154 SOP Battery Screening Process Worldwide Error Beeps The computer automatically performs a power on self test when it is turned on after being fully shut down not a restart This section describes what to do if beeps are heard during the startup Note The computer has a memory expansion slot that accepts a 1 25 inch or shorter PC 100 compliant SO DIMM memory card Refer to the Memory Replacement instructions for removal and installation 2 iBook G4 12 inch Late 2004 Troubleshooting Symptom Charts Symptom Charts Computer beeps once at startup 1 2 One beep means that no RAM is detected If a RAM card is installed in the expansion slot remove it and put in known good and compatible RAM and restart If symptom does NOT repeat replace RAM card If symptom repeats replace logic board If no RAM card is installed replace logic board Computer beeps twice at startup 1 Two beeps means that EDO memory is installed in the expansion slot The iBook computer does not accept EDO memory Replace RAM card with known good and compatible RAM and restart If symptom repeats replace logic board Computer beeps three times at startup 1 2
18. make sure that the I O bezel is level and fits over all ports 75 iBook G4 Take Apart I O Bezel I O Bezel 3 Install the replacement I O bezel and reassemble and test the computer Note When installing the replacement I O bezel make sure the bezel shield and the mylar panel fits over the underside of the logic board as shown below hi LE SS Li PRE i fatal 0 Replacement Note Note the placement of the long EMI strip that covers the FireWire port USB ports and display port Make sure it is held in place by the single screw before reassembling the computer iBook G4 Take Apart 76 RJ11 Modem Cable Tools Soft cloth e Black stick or other nonconductive nylon or plastic tool Part Location SY Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card Memory card e Bottom case e Bottom shield e DC in board e Top case e Top shield I O bezel 77 iBook G4 Take Apart RJ11 Modem Cable Procedure 1 With the computer on a soft cloth lift up the modem sleeve and disconnect the RJ11 modem cable from the modem board 2 Guide the cable up through the metal channel 3 While supporting the computer assembly slide the modem port forward and off of the logic board 4 Install the replacement RJ11 modem cable and reassemble and test the computer RJ11 Modem Cable iBook G4 Take Apart 78
19. of the disc or it is wedged under one or more posts at the outer edge of the disc 4 Holding the edge of the disc press on the center clamp or hold the posts steady as you remove the disc from the drive Important Do not touch any key components located near the disc 5 Replace the top cover on the drive so that the small hooks on the top cover fit into the slots on the bottom cover Then slide the top cover into place 6 Replace the four screws If applicable install the brackets cable and faceplate back on the drive before returning the old drive 7 Install the replacement drive and reassemble and test the computer How to Remove a Stuck Disc from the Slot Load iBook G4 Take Apart 106 Display Module Tools Soft cloth e 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Note To organize the screws you remove from the computer use a tray with divided compartments such as a plastic ice cube tray Part Location Er Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card Memory card 107 iBook G4 Take Apart Display Module e Bottom case e Bottom shield e DC in board e Top case e Top shield e Modem Procedure 1 With the computer on a soft cloth note the routing of the thin black microphone cable and the LVDS low voltage data signal cable 2 Disconnect the microphone cab
20. other There is a right clutch cap and a left clutch cap Note the positioning of the clutch caps on the display clutch cover The image below shows the left clutch cap installed 149 iBook G4 Take Apart Display Clutch Cover 7 Install the replacement display clutch cover and reassemble and test the computer Warning When installing the replacement clutch cover be careful not to strain or pinch the cables Make sure they fit easily into the recessed area on both ends of the clutch cover Note The bundled cables on your display might look somewhat different than shown Display Clutch Cover iBook G4 Take Apart 150 Replacement Note When installing the replacement clutch cover hold the cables and clutch cap in place as you slide the clutch cover over them T ta ihe Lie sE E Make sure the clutch cap on each side of the clutch cover is firmly seated before installing the two screws 151 iBook G4 Take Apart Display Clutch Cover Inverter Board Tools Soft cloth e Black stick or other nonconductive nylon or plastic tool Replacement Note If the tape you remove from this assembly is worn and cannot be reused use new Kapton tape Apple part number 922 5025 Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card Memory card e Bottom case e Bottom shield e DC in board e Top case e Top shiel
21. other nonconductive nylon or plastic tool Note To organize the screws you remove from the computer use a tray with divided compartments such as a plastic ice cube tray Part Location Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card 67 iBook G4 Take Apart Top Shield e Bottom case Bottom shield e DC in board e Top case Procedure 1 With the computer on a soft cloth remove the 15 Phillips screws e Fourteen 3 mm long screws One 5 5 mm long screw Top Shield iBook G4 Take Apart 68 Replacement Note When replacing the shield install the screws in the order shown 69 iBook G4 Take Apart Top Shield 2 Using a black stick carefully peel up but do not remove any foil strips or pieces of tape Note When reassembling the computer reuse the foil and tape to secure the replacement top shield 3 Warning Do not bend the top shield Lift the top shield off the computer being careful where it might catch on the computer assembly 4 Install the replacement top shield and reassemble and test the computer Replacement Note With the top case removed the small EMI strip at the RJ11 cable can become loose Make sure it is installed before replacing the top shield Top Shield iBook G4 Take Apart 70 Replacement Note With the top shield removed check the hard drive stiffener Make sure it has a thin
22. portion of the keyboard Keyboard and RAM Shield iBook G4 Take Apart 20 AirPort Extreme Card Tools e Small soft cloth if an optional AirPort Extreme Card is installed Part Location i tow i CR RS DR GE EE En iF s a Preliminary Steps Before you begin remove the following Battery e Keyboard but do not disconnect the keyboard cable 21 iBook G4 Take Apart AirPort Extreme Card Procedure 1 Touch a metal surface on the inside of the keyboard well to discharge any static electricity Important To avoid electrostatic discharge damage always ground yourself by touching the computer s framework before you touch any parts or install any components inside the computer To avoid static electricity building back up in your body do not walk around the room until you have completed the installation and closed the computer 2 Lift up the flexible wire bracket that secures the card 3 Detach the antenna cable from the AirPort Extreme Card AirPort Extreme Card iBook G4 Take Apart 22 4 Use the pull tab on the card to remove the card from the slot 23 iBook G4 Take Apart AirPort Extreme Card 5 Install the replacement AirPort Extreme Card into the slot 6 Plug the AirPort antenna cable connector into the port on the end of the replacement card Make sure the connector is straight before inserting it into the card Use the wire bracket to secure the AirPort Extreme Card i
23. the top of the thermal plate Small rectangular pad in the middle of the thermal plate e Mid sized square pad at the lower end of the thermal plate Replacement Note Make sure that the removable thermal bridge that connects the heatsink plate to the fan plate is in place with the single screw Heatsink iBook G4 iBook G4 Take Apart 116 Replacement Note If the thermal pads remain on the logic board carefully remove them with a black stick 6 Install the replacement heatsink and reassemble and test the computer 117 iBook G4 Take Apart Heatsink iBook G4 Heatsink 1Book G4 Early 2004 Tools Soft cloth 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Needlenose pliers or 2 0 mm hex nut driver Note To organize the screws you remove from the computer use a tray with divided compartments such as a plastic ice cube tray Part Location Preliminary Steps Before you begin remove the following Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card Heatsink iBook G4 Early 2004 iBook G4 Take Apart 118 e Bottom case e Bottom shield e DC in board e Top case e Top shield e Hard drive e Modem Procedure 1 Remove the following from the heatsink One 7 mm long screw at top edge of frame Three 5 5 mm long screws at fan opening One hex nut from the lower right end of the thermal plate Two 7 mm long hex spring scre
24. 2 inch Late 2004 Troubleshooting Symptom Charts Service Source Views iBook G4 iBook G4 Early 2004 2002 Apple Computer Inc All rights reserved iBook G4 Main Exploded View Not Shown RJ 11 Modem Cable 922 6121 Memory 128 MB 661 2817 256 MB 661 2818 512 MB 661 2819 Keyboard US 922 6132 Top Case 922 6131 RAM Shield 922 6141 Top Shield Bluetooth Board aia 922 5764 Bluetooth Fan Antenna 922 6123 922 6126 Hard Drive Heatsink with Fan 40 GB 661 2957 Flex Cable Optical 60 GB se 2958 Logic Board j ES y QR Bracket 661 2992 a a 922 6139 Bracket 1 Flex Cable Flex Cable je Hard Drive 922 6145 A 922 6124 922 6140 a Modem Dash 661 2632 TT Stiffener Part of TrackPad Rework Kit 076 1078 Optical Drive CW 8123 Combo 661 3183 CD ROM 661 2984 CW 8122 Combo 661 2960 Frame 922 6142 Bottom Case 922 6148 Battery 661 2994 iBook G4 Views 1 iBook G4 Display Exploded View Display Housing 922 5573 Shield LCD Panel 922 5021 LVDS Cable 922 6135 LCD Flat Panel Display 661 2773 Inverter Board 922 5019 Antenna Kit 922 6133 Inverter Reed Switch Cable 922 6134 Bezel Brace 922 5015 Display Bezel 922 6149 Clutch Cover 922 6152 2 iBook G4 Views iBook G4 Early 2004 Main Exploded View Not Shown RJ 11 Modem Cable 922 Memory 512 MB 661 3327 1 GB 661 3328
25. Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card Bottom case Bottom shield e DC in board e Fan e Top case 113 iBook G4 Take Apart Heatsink iBook G4 e Top shield e Hard drive Modem Procedure 1 Remove the following from the heatsink One 7 mm long screw at top edge of frame Three 5 5 mm long screws at fan opening One hex nut from the lower end of the thermal plate Two 7 mm long hex spring screws at the upper end of the thermal plate Replacement Note When Sa the heatsink install the screws in the order shown Heatsink iBook G4 iBook G4 Take Apart 114 2 Remove the two screws from the vent cover and tilt up the vent cover slightly 1 Eu r e4 dl a i n Ce Cl ET al oie 5 5 an P ja ass i Ae H a j Pa i Le Le 5 j FF a a z J pij e j Maia Le j i A y 3 Use a black stick to tilt up the heatsink at the left side 4 Raise the vent cover as you lift the heatsink out of the computer assembly Warning The heatsink pipe can bend easily Use caution when removing or replacing the heatsink 115 iBook G4 Take Apart Heatsink iBook G4 5 Turn over the heatsink and note the L shaped marks that indicate the position for placement of the thermal pads Replacement Note Any time the heatsink is removed or a replacement heatsink is to be installed make sure new thermal pads are applied in the following orientation Largest pad at
26. EE us rh ant La we ma A CN Sere a ji q E Ei e Le LS k woa Le Preliminary Steps Before you begin remove the following Battery Bottom case Bottom shield Fan iBook G4 Take Apart 46 Procedure 1 With the computer on a soft cloth remove any tape that holds the fan and cable in place 2 Remove the four identical screws from the fan Replacement Note When reassembling the computer the replacement fan might include a piece of tape that secures the cable to the body of the fan Make sure the tape is not blocking the fan blade movement Install the screws in the order shown 47 iBook G4 Take Apart Fan 3 Lift the fan from the computer and use a black stick to disconnect the connector from the logic board 4 Install the replacement fan and reassemble and test the computer Replacement Note Before installing the fan make sure it is securely connected and fresh tape is applied Senn je z l i z r L i i i Fan iBook G4 Take Apart 48 Top Case Tools This procedure requires the following tools Soft cloth e Jeweler s flat blade screwdriver 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Note To organize the screws you remove from the computer use a tray with divided compartments such as a plastic ice cube tray Part Location 49 iBook G4 Take Apart Top Case Preliminary Steps Before you begin rem
27. Processor 1 0 GHz 1 0 GHz 1 2 GHz Optical Drive Combo DVD Combo DVD Combo DVD ROM CD RW ROM CD RW ROM CD RW Hard Drive 30 GB 40 GB 60 GB Memory 256 MB RAM 256 MB RAM 256 MB RAM For servicing the 14 1 inch models refer to the iBook G4 14 inch service manual 3 iBook G4 Take Apart General Information New Procedures If you are familiar with taking apart iBook computers you will notice some differences with this iBook model Slot load optical drive AirPort Extreme Card option e Bluetooth option The number and types of screws differ somewhat from previous models Note The top and bottom EMI shields are now marked with screw identifiers for most of the screw locations The screw identifiers are in the form of M2x_ where the last digit indicates the approximate screw length For example a marking of M2x3 indicates a 3 5 mm long screw Use the identifiers as a guide when reassembling the computer Tools The following tools are recommended for the Take Apart procedures e Coin e ESD wriststrap and mat Magnetized 0 Phillips screwdriver e Jeweler s flat blade screwdriver e Small soft cloth e Torx T8 screwdriver 2 0 mm hex nut driver e Needlenose pliers e Torx T6 screwdriver or 5 32 hex driver for display housing e Black stick or other nonconductive nylon or plastic tool Note To organize the screws you remove from the assembly use a tray with divided c
28. Troubleshooting Symptom Charts Startup The computer will not power on 1 2 3 4 5 10 11 12 Remove any connected peripherals Try kKnown good power outlet Try known good power adapter and power cord Remove battery Reset the power manager by pressing the key combination Control Option Shift power Warning Make sure you do not hold down the fn key when resetting the power manager Warning Resetting the power manager means you will also need to reset the date and time using the Date amp Time control panel Reset PRAM Press the power button then hold down the Option Command P R keys until you hear the startup chime at least one additional time after the initial startup chime Disconnect internal keyboard completely Inspect connectors Restart with keyboard disconnected Remove any additional RAM and AirPort Extreme Card Try known good DC board Verify cable connections and check cables for damage Verify power button is connected properly to logic board if power button is not functioning correctly or damaged replace the top case Replace logic board At startup a dialog box comes up stating kernel panic in Mac OS X 1 2 If a RAM card is installed in the expansion slot remove it and restart If symptom repeats replace logic board If symptom does not repeat replace RAM card with known good RAM card restart If no RAM card is installed replace logic board Rel
29. article 86186 PowerBook G4 iBook Combo Drive Does Not Write CD R Media at Maximum Speed Ports The FireWire or USB port is not recognizing devices 1 2 or eS a EE Completely shut down then press the power button to start the computer Use Software Update in Mac OS X system preferences to verify that the latest software is installed Use Apple System Profiler to verify that the computer is recognizing the bus For USB test ports with an Apple keyboard or mouse For FireWire test by connecting another computer in FireWire Tare Target Disk Mode Refer to article 58583 How to Use FireWire Target Disk Mode Verify that drivers are installed properly for third party if needed Try other port if available or try a different cable Try kKnown good device If self powered make sure that the power supply is connected and device s LED indicates that it is getting power 10 Replace logic board A USB device not recognized by computer Note If you are trying to use a Serial device with a USB Serial adapter check with the manufacturer of the adapter for compatibility 1 pe She ae IN Completely shut down then press the power button to start the computer Try known good Apple USB keyboard or mouse to verify the port is working properly Verify current driver for the device is installed If a camera turn on camera after initiating download with camera application Try the other USB port Try kKnown good cable
30. ase Reseat the heatsink if it is not properly secured 10 Replace logic board The microphone is not working 1 2 Check the signal level and level meter and adjust the gain Reset PRAM Press the power button then hold down the Option Command P R keys until you hear the startup chime at least one additional time after the initial startup chime Verify microphone cable connection to logic board and check cable for damage Replace microphone cable Replace logic board 14 iBook G4 12 inch Late 2004 Troubleshooting Symptom Charts The latching mechanism that holds the display closed is not working Note As the display closes against the top case a hook in the top of the display housing should be magnetically pulled down into a slot in the top case and secured When the latch button is pushed the hook should release and retract into the display housing allowing the display to open 1 Verify hook operation by exercising the latch mechanism 2 If the hook does not operate properly replace the display bezel 3 Ifthe latch or latch button does not operate properly replace the top case assembly Fan fails 1 Check fan cable connection and check cable for damage 2 Replace fan 3 Replace logic board Trackpad works intermittently The trackpad operation can be affected by hand lotion humidity dangling jewelry and the use of more than one finger on the trackpad 1 Check for environmental factors suc
31. assembly 7 Atthe bottom of the bezel remove the tape from the inverter board and note the routing of the two soldered cables on the left side of the antenna board 159 iBook G4 Take Apart Antenna Board 8 On the left side of the bezel remove the two Phillips screws at the antenna receptor 9 Tilt up the antenna receptor to remove it from the left side of the bezel assembly Antenna Board iBook G4 Take Apart 160 11 Use a black stick to lift out the cables from the channels 12 Remove the antenna board with attached cables and antenna receptors 13 Install the replacement antenna board and reassemble and test the computer Replacement Note Make sure the right corner of the replacement antenna board aligns with the raised L shaped guide in the bezel assembly as shown Replacement Note Make sure the replacement antenna board does not cover or pinch any cables Warning Handle the replacement antenna board receptors and cables with care Do not strain or pinch cables Do not apply pressure to or bend the antenna receptors LUTTE 20 9rel 0e8 i mar FE le FU Ave lt lt 161 iBook G4 Take Apart Antenna Board Reed Switch Board Tools Soft cloth e Black stick or other nonconductive nylon or plastic tool 0 Phillips screwdriver Replacement Note If the tape you remove from this assembly is worn and cannot be reused use new Kapton tape Apple part number 922 5025 Prelim
32. assembly and reassemble and test the computer Reed Switch Board iBook G4 Take Apart 166 Microphone Cable Tools Soft cloth e Black stick or other nonconductive nylon or plastic tool Replacement Note If the tape you remove from this assembly is worn and cannot be reused use new Kapton tape Apple part number 922 5025 Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card Memory card e Bottom case e Bottom shield e DC in board e Top case e Top shield e Modem e Display module e LCD panel 167 iBook G4 Take Apart Microphone Cable Procedure Warning Be careful not to strain or pinch the delicate microphone cable or surrounding cables when performing this procedure 1 With the bezel assembly lying on a soft cloth use a black stick to loosen the slack on the cable near the microphone gasket 2 Pry up the microphone gasket from the upper left corner of the bezel Warning Do not pull on the delicate wires attached to the microphone Note If the gasket is covered with tape be sure to replace it when installing the replacement microphone cable 3 Working around the perimeter of the bezel pull up the microphone cable from the cable channel being careful not to strain any other cables Microphone Cable iBook G4 Take Apart 168 4 Free the microphone cable from the right corner of the bezel and from underneath the ta
33. ated article Symptom Charts 111772 iBook Dual USB Beeps Are Heard at Startup one to four beeps iBook G4 12 inch Late 2004 Troubleshooting 9 Display No display or dim display but computer appears to operate correctly 1 Remove any connected peripherals 2 Try known good power outlet power adapter and power cord 3 Press F2 with the fn key pressed and not pressed to increase the screen brightness setting 4 Reboot the computer hold down the Control and Command keys and press the Power button or press and hold the Power button for 5 to 10 seconds to shut down the computer then press the Power button to restart 5 Reset the power manager by pressing the key combination Control Option Shift power Warning Make sure you do not hold down the fn key when resetting the power manager Warning Resetting the power manager means you will also need to reset the date and time using the Date amp Time control panel 6 Reset PRAM Press the power button then hold down the Option Command P R keys until you hear the startup chime at least one additional time after the initial startup chime 7 Connect an external display and check for video on external display If video is fine on external display replace LCD panel If video symptom is same on external display replace logic board 8 Verify backlight cable and LVDS cable connections are seated properly and that the cables are not damaged refer to disp
34. connect the cable from the Bluetooth board and the logic board am En ER 7 CL RES Li i Suns te D ee oe LA es Ps 2 Disconnect the antenna cable from the Bluetooth board 3 Remove the screw from the Bluetooth board Bluetooth iBook G4 Take Apart 94 4 Without putting pressure on the optical drive support the antenna board holder in place as you slide out the antenna board 5 Note If the antenna board holder is attached securely you do not need to replace it when installing a replacement Bluetooth antenna board However if you are replacing the optical drive with a new drive remove the antenna board holder and install a new one on the replacement optical drive The antenna board holder adheres to the optical drive with an adhesive backing he a x ur th ea k ail I er a i l ar tr Sy rte re a NE eae ooh sak m r ni ae N bo e h A Sree aft es et tis od i ras LS ea 2 a er EA J a Mare Se a oo 4 Cal Le oe 4 Fe a a 95 iBook G4 Take Apart Bluetooth 6 Install the replacement Bluetooth board and antenna and reassemble and test the computer Bluetooth iBook G4 Take Apart 96 Optical Drive Note Depending on the configuration of a customer s computer the optical drive can be either a CD ROM drive or a combination CD RW DVD ROM drive The replacement instructions are the same whichever optical drive is installed Tools Soft cloth e 0 Phillips screwd
35. d e Modem e Display module e LCD panel Inverter Board iBook G4 Take Apart 152 Procedure 1 With the bezel assembly lying on a soft cloth disconnect the data cable from the right end of the inverter board at CN1 2 Using a black stick peel up the pieces of tape Replacement Note Note the position of the inverter board and cables for the installation of the replacement inverter board TEE me r ie A ES s iii eea PA eS od 153 iBook G4 Take Apart Inverter Board 3 Warning When lifting the inverter board be careful not to pinch the cables that are routed above the board e Use a black stick to pry up the inverter board Replacement Note The inverter board is held to the bezel assembly with double sided tape on each end of the board Use new double sided tape when installing the replacement inverter board 4 Install the replacement inverter board and reassemble and test the computer Replacement Note Make sure the left corner of the replacement inverter board aligns with the raised L shaped guide in the bezel assembly Make sure the replacement inverter board does not cover or pinch any cables Inverter Board iBook G4 Take Apart 154 Antenna Board Tools Soft cloth e Black stick or other nonconductive nylon or plastic tool 0 Phillips screwdriver Replacement Note If the tape you remove from this assembly is worn and cannot be reused use new Kapton tape Appl
36. d and restart the computer Note You may need to reset the date and time using the Date amp Time control panel in System Preferences Warning Never turn on the computer unless all of its internal and external parts are in place and it is fully reassembled Operating the computer when it is missing parts can damage the computer or cause injury 7 iBook G4 Take Apart Battery Foot and Foot Socket Tools Foot kit Soft cloth e Needlenose pliers 0 Phillips jeweler s screwdriver Caution To avoid scratching the case use caution when using tools to remove and replace the foot and foot socket Part Location Preliminary Steps Warning Always shut down the computer before opening it to avoid damaging its internal components or causing injury After you shut down the computer the internal components can be very hot Let the computer cool down for 30 minutes before continuing Foot and Foot Socket iBook G4 Take Apart 8 Procedure 1 2 3 4 5 Place the computer on a clean flat surface or soft cloth Shut down the computer and wait thirty minutes before continuing Disconnect the power cord and any other cables connected to the computer Close the computer turn it over and locate the foot that needs replacement Caution To avoid scratching the case use caution when using tools to remove and replace the foot If any portion of the rubber foot remains on the bottom case use tweezers or ne
37. e in the frame i Logic Board iBook G4 Take Apart 128 6 Install the replacement logic board and reassemble and test the computer Note When reassembling the computer make sure that you transfer the following items from the original logic board to the top of the replacement logic board e Memory card e RJ11 port with modem cable routed over the frame 129 iBook G4 Take Apart Logic Board Frame Tools No tools are required for this procedure Part Location gE Preliminary Steps Before you begin remove the following Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card Bottom case Bottom shield e DC in board Frame iBook G4 Take Apart 130 e Fan e Top case Sleep light board e Top shield e Display module I O bezel e RJ11 modem cable e Hard drive Modem e Bluetooth e Optical drive e Display module e Heatsink e Logic board Procedure With all preliminary steps completed the frame is the remaining part F DEES S engl ga Sn J 131 iBook G4 Take Apart Frame Replacement Note The front of the frame includes two integral grommets for positioning the hard drive Make sure the grommets are in place before reassembling the computer a i Replacement Note If the long EMI strip at the port side of the frame is still attached to the frame make sure you install it on the replacement frame before r
38. e part number 922 5025 Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield e AirPort Extreme Card Memory card e Bottom case e Bottom shield e DC in board Top case e Top shield e Modem e Display module e LCD panel 155 iBook G4 Take Apart Antenna Board Procedure 1 With the bezel assembly lying on a soft cloth peel up the tape from the antenna board 2 Note the placement of the antenna board and the routing of the cables that are soldered to and run along the bottom of the antenna board Antenna Board iBook G4 Take Apart 156 3 Warning When lifting the antenna board be careful not to strain or pinch the cables Replacement Note The antenna board is held to the bezel assembly with double sided tape on each end of the board Use new double sided tape when installing the replacement antenna board Use a black stick to pry up the antenna board but do not remove it yet 157 iBook G4 Take Apart Antenna Board 4 With the antenna board loosened note the cable routing on each side of the bezel On the right the antenna receptor cable is routed underneath the microphone cable through two channels before terminating at the receptor bracket 5 Remove the two Phillips screws from the antenna receptor on the right side of the bezel assembly Antenna Board iBook G4 Take Apart 158 6 Tilt up the antenna receptor to remove it from the bezel
39. ea 0602 APT TS sae fe p p Yo La je OE oocy teyr Lecu LELES ARE LE CHAU a per Soaee eres ef ice She 3 LILLRLLLEL 8 Reassemble and test the computer How to Add Spiral Tubing to Protect the Inverter Ca iBook G4 Take Apart 42 DC In Board Tools e Soft cloth e 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Part Location mi Ta Preliminary Steps Before you begin remove the following Battery Bottom case Bottom shield 43 iBook G4 Take Apart DC In Board Procedure 1 With the computer on a soft cloth disconnect the DC in cable from the underside of the logic board 2 Remove any tape that holds the cable to the frame or logic board 3 Route the cable from the guides in the chassis AAA Bi me eer Te ou oe ial H LS Tii a ET ay ha rhe Lg CE LE i LUN DC In Board iBook G4 Take Apart 44 4 Remove the two identical screws from the DC in board 5 Tilt up the DC in board and pivot it out of the frame 6 Remove the DC in board from the computer assembly 7 Install the replacement DC in board and reassemble and test the computer 45 iBook G4 Take Apart DC In Board Fan Tools e Soft cloth e 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Part Location rm sy in il Nu mo fi w ee ER SR E
40. eassembling the computer Refer to I O Bezel in this chapter a BS EE Me ele Fn mam LEA L Frame iBook G4 Take Apart 132 Display Housing Back Case Tools Soft cloth e Torx T6 screwdriver or 5 32 hex driver e Black stick or other nonconductive nylon or plastic tool Note To organize the screws you remove from the LCD panel assembly use a tray with divided compartments such as a plastic ice cube tray Replacement Note If the tape you remove from this assembly is worn and cannot be reused use new Kapton tape Apple part number 922 5025 Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card e Bottom case e Bottom shield e DC in board Top case e Top shield e Modem e Display module 133 iBook G4 Take Apart Display Housing Back Case Procedure Important Although the display pictured in this section may appear different from the display you are working on the steps are the same 1 With the display module lying face up on a soft cloth use either a 5 32 hex driver or a Torx T6 screwdriver to remove the four screws two on each side from the display housing Amim a z il 3 i ae 2 Using a black stick pry up the bezel from the display housing Carefully work the black stick around the outer perimeter and corners of the bezel Display Housing Back Case iBook G4 Take Apart 134 3 Warni
41. edlenose pliers to carefully remove it Wg i er i 9 iBook G4 Take Apart Foot and Foot Socket 7 Install the new socket For the best fit do not reuse the old socket Replacement Note When replacing the socket notice the wedge area on the bottom of the socket and the matching wedge area in the bottom case Position the socket in the bottom case to align the wedge areas You might need to rotate the socket slightly until it sits flat into the bottom case 8 With the socket sitting flat in the bottom case install the screw Foot and Foot Socket iBook G4 Take Apart 10 9 Before installing the replacement foot check the shape The socket and foot are keyed and may look like one of these e Socket with three identical openings to match the three identical raised areas on the foot e Socket with three identical openings and a fourth indented area to match the four raised areas on the foot 11 iBook G4 Take Apart Foot and Foot Socket 10 Install the matching foot by aligning its textured surface to the open areas in the socket With gentle even pressure press the foot onto the socket 11 Reassemble and test the computer Foot and Foot Socket iBook G4 Take Apart 12 Keyboard and RAM Shield Tools 0 Phillips screwdriver Jeweler s flat blade screwdriver if keyboard is locked Small soft cloth if an optional AirPort Extreme Card is installed Part Location Preliminary Steps Before you be
42. etwork Setup Verify known good analog not digital telephone line Verify Known good RJ11 telephone cable Verify RJ11 cable is not plugged into Ethernet port Inspect RJ11 connector and modem port for pin damage Verify RJ11 telephone cable is firmly installed in the modem port pe CRM ee IN If using Apple Remote Access select Ignore Dial Tone in the Modem control panel If the modem connects with this settings selected try another phone line If using a terminal or communications program enter atx1 to disable tone detection To reset the modem back to the factory settings enter atz 8 Verify modem 2 pin connector is plugged into modem correctly 9 Replace the modem 2 pin connector cable 10 Replace modem Related article 106592 Mac OS X How to Use Modem AT Commands Cannot send fax 1 Check that Network connection in System Preferences is set to Internal Modem 2 Refer to Knowledge Base article 25746 Mac OS X 10 3 Fax doesn t send iBook G4 12 inch Late 2004 Troubleshooting 5 Cannot receive fax Check that Receive faxes on this computer is selected in the Print amp Fax area of System Preferences Related articles 25731 Mac OS X 10 3 Receiving faxes and connecting to the Internet 25596 Mac OS X 10 3 About Receiving Faxes Modem drops connection 1 Try known good phone line 2 Refer to Knowledge Base article 106748 Mac OS X Troubleshooting a dial up PPP Internet connection Optical Dr
43. foam strip backing The stiffener can become loose Make sure it is positioned over the hard drive and frame before replacing the top shield If the foam backing is missing order a trackpad kit Apple part number 076 1078 and replace the stiffener with one from the kit 71 iBook G4 Take Apart Top Shield Important If you are installing the same top shield remove the EMI finger by twisting it off of the shield If you are replacing the top shield make sure the shield does not have the EMI finger attached A new foam pad on the trackpad overrides the need for the EMI finger Top Shield iBook G4 Take Apart 72 Replacement Note Before installing the top shield make sure cables are routed as shown and fresh tape is installed where shown i i H Ji j z E pE Ce i fi LATE ik ii 73 iBook G4 Take Apart Top Shield I O Bezel Tools Soft cloth e 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Part Location Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card e Bottom case Bottom shield e DC in board e Top case e Top shield I O Bezel iBook G4 Take Apart 74 Procedure 1 With the computer on a soft cloth remove the two screws from the I O bezel 2 Remove the I O bezel from the computer frame Note When reassembling the computer
44. gin remove the battery 13 iBook G4 Take Apart Keyboard and RAM Shield Procedure 1 Raise the display so you can access the keyboard 2 Make sure the keyboard locking screw located in the small plastic tab next to the Num Lock key is not in the locked position The iBook comes with the keyboard unlocked so unless you or someone else locked the keyboard you can skip this step To unlock the keyboard turn the screw 1 2 turn Keyboard and RAM Shield iBook G4 Take Apart 14 3 Release the keyboard by pulling down on the keyboard release tabs located to the left of the F1 and F12 keys then lift the top portion of the keyboard up slightly and toward the display 15 iBook G4 Take Apart Keyboard and RAM Shield 5 Touch a metal surface on the inside of the computer to discharge any static electricity as shown Important To avoid electrostatic discharge damage always ground yourself by touching the computer s framework before you touch any parts or install any components inside the computer To avoid static electricity building back up in your body do not walk around the room until you have completed the installation and closed the computer as tal Tis ce i g T jis D u EL EF i z F i I A lg 3 b r I l I H 6 Ifthe computer has the optional AirPort Extreme Card installed unlatch the flexible wire bracket that secures the card Use the pull tab on the card to remove it from the slot Yo
45. gn the front of the drive bezel to the outer edge of the frame first Make sure the screw holes align Check that the felt at the slot opening is even and not mashed 103 iBook G4 Take Apart Optical Drive How to Remove a Stuck Disc from the Slot Load Drive The following instructions explain how to remove a disc that is stuck in the slot load optical drive Important When a disc becomes stuck in the slot load optical drive it makes the drive unusable Make sure you have a replacement drive available Tools This procedure requires the following tools e ESD wriststrap and mat e 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Preliminary Steps Before you begin remove the optical drive from the computer If brackets a cable and a faceplate are attached to the drive use a screwdriver and black stick to remove them Note The following image shows a sample drive with brackets cable and faceplate attached Your drive might have a different appearance How to Remove a Stuck Disc from the Slot Load iBook G4 Take Apart 104 Procedure 1 Remove the four identical screws that hold the top cover to the drive 2 Slide the top cover approximately 2 mm toward the back of the drive Lift up the top cover to remove it 105 iBook G4 Take Apart How to Remove a Stuck Disc from the Slot Load 3 Check the placement of the disc It is either clamped to the turntable at the center
46. h as humidity hand lotion or jewelry 2 Clean the trackpad with a clean dry lint free cloth Related articles 17228 Portables Jumpy or Erratic Trackpad Operation 58389 PowerBook and iBook Trackpad Does Not Respond Greasy substance in battery bay A small amount of grease is used on the springs in the battery bay Inform customers that the grease helps the springs operate correctly The grease is not harmful and should not cause alarm However if it comes in contact with skin wash it off with soap and water Refer to Knowledge Base article 88369 iBook White Greasy Substance in Battery Bay Symptom Charts iBook G4 12 inch Late 2004 Troubleshooting 15 Block Diagram PowerPC G4 microprocessor L2 cache 512 KB Flat panel 256 MB on board display 133 MHz AN MaxBus AGP 4X bus ATI Mobility External Radeon 9200 display graphics IC connector FireWire FireWire port Memory bus SO DIMM connector Ethernet Connector to internal LJ Een EERE memory Headphone port ATA 100 bus controller intemal pts Audio microphone Connector to internal system optical drive ROMOIEr a Internal speakers ATA 33 bus id AirPort PMU99 Extreme power controller PCI bus Card USB 2 0 port Trackpad Rs j controller USB 2 0 port Keyboard Boot ROM Data pum and ang El Modem port Modem module Power supply and charger 128 12M B Bluetooth ope S 16 iBook G4 1
47. inary Steps Before you begin remove the following e Battery e Keyboard and RAM shield e AirPort Extreme Card Memory card e Bottom case e Bottom shield e DC in board Top case e Top shield e Modem e Display module e LCD panel Reed Switch Board iBook G4 Take Apart 162 Procedure 1 With the bezel assembly lying on a soft cloth remove the one 3 mm long Phillips screw at the reed switch board 2 Pull up the reed switch cables from the channels on the left side of the bezel LULLE ee pP f Paro J ree 163 iBook G4 Take Apart Reed Switch Board 3 Lift up the cables and peel up the tape that covers the cables running along the bottom of the inverter board feu a Li Ta esl ritalin ee ss ii ale aaa lon r Lhe Fae au jis TF Reed Switch Board iBook G4 Take Apart 164 4 Warning When removing the tape that bundles the reed switch cable assembly to the AirPort Extreme Card antenna cable be careful not to strain or pinch the cables Replacement Note When installing the replacement reed switch board and cables use new tape to bundle the cables together Remove the tape to free the AirPort Extreme Card antenna cable from the reed switch cable assembly 5 Disconnect the data cable from the inverter board at CN1 165 iBook G4 Take Apart Reed Switch Board 6 Remove the reed switch cable assembly 7 Install the replacement reed switch board and cable
48. ing it where it is still connected to the inverter by the 2 pin inverter connector LCD Panel iBook G4 Take Apart 142 14 Disconnect the inverter cable from the inverter board at CN2 and remove the LCD panel Replacement Note If the inverter cable is short as shown make sure it is looped and tucked into the space on the inner side of the bezel before assembling the display module 143 iBook G4 Take Apart LCD Panel 15 Install the replacement LCD panel and reassemble and test the computer Replacement Note For an LCD panel that has a long inverter cable make sure the cable is routed as shown lays flat and does not touch the LCD shield LCD Panel iBook G4 Take Apart 144 With the shield installed over the replacement LCD panel apply a rectangular piece of foil tape to overlap the shield and cables at the left side of the clutch as shown below 145 iBook G4 Take Apart LCD Panel Display Clutch Cover Tools Soft cloth e Torx T6 screwdriver or 5 32 hex driver 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Note To organize the screws you remove from the display assembly use a tray with divided compartments such as a plastic ice cube tray Preliminary Steps Before you begin remove the following Battery e Keyboard and RAM shield AirPort Extreme Card Memory card e Bottom case e Bottom shield e DC in board e Top case e Top shield
49. ive The CD or DVD optical disc drive does not accept disc mechanical failure 1 Verify disc is not warped 2 Verify disc is properly seated in the carrier 3 Replace optical disc drive The CD or DVD optical disc icon does not show up on the desktop or a dialog box appears to initialize disc 1 Verify the correct type of disc is being used for the type of drive a CD ROM or CD RW drive reads CD discs only a DVD ROM or Combo drive reads CD or DVD discs Try cleaning the disc If it is dirty or scratched it may not mount Try a different disc Reseat optical drive cable Replace optical drive cable This is the same cable that attaches to the hard drive or Oi ae es IN Replace optical drive The optical drive does not eject CD or DVD disc 1 Verify disc is not in use by quitting any applications that may be using the disc 2 Press and hold Media Eject key at top right corner of keyboard If that does not work hold down Function fn key and Media Eject key 3 Drag disc icon to trash or select it and press Command E 4 Choose Restart from Apple menu while holding down trackpad button 6 iBook G4 12 inch Late 2004 Troubleshooting Symptom Charts Symptom Charts 5 Refer to Take Apart to remove the stuck disc and replace the optical drive Related article 106752 Macintosh How to Eject a Disc When Other Options Do Not Work The combo drive does not write at maximum speed Refer to Knowledge Base
50. lay assembly replacement instructions 9 Replace LCD panel 10 Verify cable connections and check cables around the hinges for damage 11 Replace logic board When displaying a single color over the screen area the LCD panel shows one or more pixels that are not properly lit Active matrix LCD technology uses rows and columns of addressable locations pixels that render text and images on screen Each pixel location has three separate subpixels red green and blue that allow the image to be rendered in full color Each subpixel has a corresponding transistor responsible for turning the subpixel on or off There are typically millions of these subpixels on an LCD display For example the LCD panel used in the Apple Cinema HD display is made up of 2 3 million pixels and 6 9 million red green and blue subpixels Occasionally a transistor does not work perfectly which may result in the affected subpixel being turned on bright or turned off dark With the 10 iBook G4 12 inch Late 2004 Troubleshooting Symptom Charts LCD Size inches millions of subpixels on a display it is quite possible to have a low number of faulty transistors on an LCD Therefore a certain number of subpixel anomalies is considered acceptable Rejecting all but perfect LCD panels would significantly increase the retail price for products using LCD displays These factors apply to all manufacturers using LCD technology not just Apple products To
51. le from the logic board near the hard drive 3 Pull up the flexible tab to disconnect the LVDS cable from the logic board Display Module iBook G4 Take Apart 108 4 Without straining the cables lift them up from the logic board 5 Peel off any tape holds the cables to the frame 6 While supporting the display tilt up the chassis and disconnect the inverter cable from the underside of the logic board 109 iBook G4 Take Apart Display Module Display Module 7 Warning To prevent damage support the display while performing this step Remove the four screws con Note When reinstalling the screws install them in the rder son by the boxed numbers 4 Samm 8 Warning When lifting tt the display be careful not to strain the cables Support the display as you route the AirPort antenna cable out from the frame groove above the optical drive iBook G4 Take Apart 110 111 iBook G4 Take Apart Display Module 9 Remove the display from the computer chassis Display Module iBook G4 Take Apart 112 Heatsink 1Book G4 Tools Soft cloth 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Needlenose pliers or 2 0 mm hex nut driver Note To organize the screws you remove from the computer use a tray with divided compartments such as a plastic ice cube tray Part Location Preliminary Steps Before you begin remove the following
52. les as you press the top case back onto the computer Check that the top case shows no raised surfaces and is fully snapped into place before installing the remaining screws Top Case iBook G4 Take Apart 60 Sleep Light Board Tools Soft cloth e 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Part Location Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card e Bottom case e Bottom shield e DC in board e Top case 61 iBook G4 Take Apart Sleep Light Board Procedure 1 With the computer on a soft cloth note the location of the sleep light board connector on the logic board Note When reassembling the computer make sure the sleep light board is positioned as shown and does not get caught between the top and bottom case 2 Disconnect the cable that attaches the sleep light board to the logic board Caution Be careful not to bend the spring clip next to the connector 3 Turn over the computer and remove the single screw from the sleep light holder and frame Sleep Light Board iBook G4 Take Apart 62 4 Remove the sleep light board and holder from the frame 5 Install the replacement sleep light board and reassemble and test the computer 63 iBook G4 Take Apart Sleep Light Board Display Latch Display Latch Tools This procedure requires the foll
53. n place by inserting its prongs into the slots in the RAM shield oe ET geeky nary ly el ne AT e aea a RE m EEE as ee Ter F 1 ls DS i 2 ee OU ON CS ON 8 e IA Fr DE NE 18 r EE ag 18 BI EN Ap JE I E SD 1E Ar 16 Sr QE Sp RE SL pi E LE Note If no replacement AirPort Extreme Card is to be installed the antenna cable should be routed as shown 7 Reassemble and test the computer AirPort Extreme Card iBook G4 Take Apart 24 Memory Card Warning Memory cards come in various specifications Only install memory cards that are approved for this computer Tools The only tool required for this procedure is a small soft cloth if an optional AirPort Extreme Card is installed Part Location Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield but do not disconnect the keyboard cable AirPort Extreme Card 25 iBook G4 Take Apart Memory Card Procedure 1 Locate the installed memory card and brackets that secure the card on both sides 2 Carefully spread the brackets away from the notches in the card until the card releases on each side 3 Pull the card up and out of the memory slot dit i N RE ni KAN sh Hu i ARRUIN A OE RNS Memory Card iBook G4 Take Apart 26 4 Align the notch in the replacement memory card with the small tab in the memory slot Hold the card at a 30 degree angle then push the ca
54. ng When lifting the assembly be careful not to strain the cables With the bezel assembly loosened grasp the display clutch and raise the assembly off of the display housing 4 Place the display assembly face down on a soft cloth 135 iBook G4 Take Apart Display Housing Back Case LCD Panel Tools Soft cloth e Torx T6 screwdriver or 5 32 hex driver 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Note To organize the screws you remove from the LCD panel assembly use a tray with divided compartments such as a plastic ice cube tray Replacement Note If the tape you remove from this assembly is worn and cannot be reused use new Kapton tape Apple part number 922 5025 Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card e Bottom case e Bottom shield e DC in board Top case e Top shield e Modem e Display module LCD Panel iBook G4 Take Apart 136 Procedure Important Although the display pictured in this section may appear different from the display you are working on the steps are the same 1 With the display module lying face up on a soft cloth use either a 5 32 hex driver or a Torx T6 screwdriver to remove the four screws two on each side from the display housing 8mm a ae E 2 Using a black stick pry up the bezel from the display housing Ca
55. nt top case Make sure that the labels lie completely flat so they do not interfere with the battery compartment Top Case iBook G4 Take Apart 58 15 Before installing the top case make sure a foam pad is positioned correctly on the metallic surface by the trackpad board If the foam pad is missing order a trackpad kit Apple part number 076 1078 and apply one of the adhesive foam pads 59 iBook G4 Take Apart Top Case 16 Install the replacement top case and reassemble and test the computer Important If the new top case you are using to replace the old top case includes a top shield you must replace the top case and top shield as a set Refer to Top Shield in this chapter for removal instructions Do not use the old top shield if a new top shield is included in the top case kit Note When installing the replacement top case connect the power switch cable connector the shorter cable first Then connect the speaker cable connector Do not strain the cables Replacement Note The trackpad cable orange flex cable is barely visible underneath the lower center of the keyboard well When installing the top case align the trackpad connector over the four pins on the logic board Then use a black stick to press the connector into place Make sure the trackpad cable is installed securely on the logic board connector under the case 4 lu thy m Warning When reassembling the computer be careful not to pinch any cab
56. o prevent damage do not flex the board Warning When it is out of the computer case the frame can be damaged by too much pressure Avoid putting pressure on the frame when removing the logic board 1 Disconnect the microphone and LVDS cables 125 iBook G4 Take Apart Logic Board Logic Board 2 Disconnect the optical drive flex cable Sue F x m S i B j p EPLE wl onli i es o iniinre LE a Eu b E KRAANI sy Jobb EH aj ve ce a a a a L IN 14 DE Ton jr MN em igr i pie il ppg p 13 Ur L Pa it iBook G4 Take Apart 126 4 Turnover the computer frame and remove the ten Phillips screws that secure the logic board to the frame e Seven identical 3 5 mm long screws Two 7 5 mm long screws at the battery connector One 5 mm long screw near the fan opening Replacement Note When installing the replacement logic board install the screws in the order shown uk i ui CI k CA ie us J jari De A og i a i ms i 1 ziea Bs 127 iBook G4 Take Apart Logic Board 5 Warning Flexing the logic board can break solder joints to components To prevent damage do not flex the board Lifting the logic board at the ports tilt up the logic board to remove it from the frame Note When installing the replacement logic board into the frame make sure that the screw openings align completely with all of thos
57. of the drive Warning Handle the hard drive at the sides only Do not touch or press anywhere else on the drive 81 iBook G4 Take Apart Hard Drive 6 Route the end of the hard drive cable through the opening in the computer frame 7 Disconnect the hard drive bracket with grommets attached by pulling it straight off the drive Note When reassembling the computer transfer the bracket including the grommets to the replacement hard drive so the grommets fit over the screw heads Hard Drive iBook G4 Take Apart 82 8 Warning Handle the hard drive at the sides only Do not touch or press anywhere else on the drive Warning If the ribbon cable connector is pulled out unevenly some connector pins could become bent and damaged Using even force pull the looped handle to disconnect the ribbon cable from the connector on the end of the hard drive 9 Remove the four black Torx T8 screws from the ends of the hard drive and transfer the screws to the replacement drive 10 Install the replacement hard drive and reassemble and test the computer 83 iBook G4 Take Apart Hard Drive Modem iBook G4 Tools Soft cloth 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Part Location Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card Bottom case Bottom shield e DC in
58. ompartments such as a plastic ice cube tray General Information iBook G4 Take Apart 4 Serial Number Location In this computer the product serial number is located in two places Battery bay e Top case underneath the keyboard 5 iBook G4 Take Apart General Information Battery Tools The only tool required for this procedure is a coin Part Location Preliminary Steps Warning Always shut down the computer before opening it to avoid damaging its Internal components or causing injury After you shut down the computer the internal components can be very hot Let the computer cool down for 30 minutes before continuing Procedure Warning If the computer has been recently operating allow it to cool down before performing this procedure 1 Place the computer on a clean flat surface 2 Shut down the computer and wait thirty minutes before continuing Battery iBook G4 Take Apart 6 3 Disconnect the power cord and any other cables connected to the computer 4 Close the computer turn it over and locate the battery latch Use a coin to turn the battery latch 1 4 turn clockwise to unlock the battery Gently remove the battery Removing the battery will prevent you from accidentally turning on the computer Warning Removing the battery before shutting down the computer may result in data loss 5 Install the replacement battery 6 Reconnect the power cord and any other cables that were connecte
59. orter power switch cable are not strained 11 With the top case loosened tilt the top case away from the computer assembly so you can see the shorter power switch cable and the longer speaker cable Do not disconnect them yet 55 iBook G4 Take Apart Top Case 12 Place the computer upright and move the top case off center Use a black stick to carefully disconnect the two cables from the logic board a m 1 o pata ni F ELLE ee G LL i 1 ee 2 i ri z Top Case iBook G4 Take Apart 56 Replacement Note When connecting the speaker cable make sure the wires are routed under the top shield as shown a 13 Remove the top case from the computer 57 iBook G4 Take Apart Top Case 14 Before installing the replacement top case make sure it includes the following Speaker set Power button and board under left speaker Speaker cable and power switch cable Trackpad assembly with board and cable Display latch Sleep magnet on palm rest below left speaker Replacement Note The sleep magnet can pop off during the top case removal Make sure the sleep magnet is in place when replacing the top case Important Make sure you transfer the original serial number label and Ethernet label from the old top case to the replacement top case You can use a black stick to carefully peel up a corner of the label Then peel off the label completely and apply it to the replaceme
60. ove the following Battery Bottom case Bottom Shield iBook G4 Take Apart 36 Procedure 1 With the computer on a soft cloth remove the four Phillips screws from the bottom case 2 Peel up but do not remove any pieces of tape Note When reassembling the computer reuse the tape to secure the replacement bottom shield Replacement Note When reassembling the computer install the replacement bottom shield so that the corner of the shield closest to the ports is secured first With the computer oriented as shown this corner is the uppermost right corner When reinstalling the screws install them in the order shown 1 i Tn Brin Simit 3 Peel up the tape if present at the computer latch If the tape tears replace it with new aluminum tape 37 iBook G4 Take Apart Bottom Shield 4 Warning Do not bend the bottom shield Lift the bottom shield off the computer 5 Note The two springs in the battery compartment can become loose When reassembling the computer make sure that the two springs are in place before installing the bottom case Each spring has grease on the coils and each has a plastic cap on one end Make sure the cap fits securely on the spring and the curved side of the cap is positioned against the inner frame Bottom Shield iBook G4 Take Apart 38 6 Install the replacement bottom shield and reassemble and test the computer Replacement Note Before installing the bot
61. ove the following Battery e Keyboard and RAM shield AirPort Extreme Card Memory card Bottom case Bottom shield e DC in board Procedure 1 With the computer upside down on a soft cloth remove the two screws from the battery bay i j ii i ALLEELE Top Case iBook G4 Take Apart 50 2 Turn over the computer 3 Remove the three identical screws from the keyboard well near the slot load drive Opening 4 Remove the remaining screws in the keyboard well e Using a small flat blade screwdriver pry up the magnet Then remove the 4 5 mm long screw beneath it 6 mm long screw with large screw head at upper left corner of keyboard well 6 mm long screw at lower left corner of keyboard well 6 mm long screw with large screw head near keyboard cable connector Note When reassembling the computer be sure to install the magnet over the screw Replacement Note When reinstalling the top case screws install them in the order shown 51 iBook G4 Take Apart Top Case 5 Peel up the cosmetic tape that runs the length of the speaker wire but make sure that the speaker wire beneath it remains in place Set aside the speaker wire tape Note When reassembling the computer reuse the speaker wire tape but make sure the speaker wire is lying flat on the top shield as shown before applying the tape Note When reassembling the computer ensure that the shrink tubing section of the speaker cable sticks to the
62. owing tools Soft cloth e Black stick or other nonconductive nylon or plastic tool Part Location Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card e Bottom case Bottom shield e DC in board e Top case iBook G4 Take Apart 64 Procedure 1 With the top case on a soft cloth note the routing of the trackpad flex cable to the trackpad board 2 Using your fingernail or a black stick tilt up the brown hinged locking connector 3 With the locking connector tilted up slide out the trackpad cable 5 Holding the top case steady press the latch button in and under the lip of the top case You might need to flex the latch opening somewhat to remove it from the top case j 65 iBook G4 Take Apart Display Latch 6 Install the replacement display latch by tilting it onto the trackpad assembly pressing the latch button and feeding the latch into the latch opening in the top case Test that the latch button works easily 7 Reassemble and test the computer Warning When reassembling the computer be careful not to pinch any cables as you press the top case back onto the computer Check that the top case shows no raised surfaces and is fully snapped into place before installing the remaining screws Display Latch iBook G4 Take Apart 66 Top Shield Tools Soft cloth e 0 Phillips screwdriver e Black stick or
63. pe Remove the two 5 mm long Phillips screws at the left bezel brace At the right bezel brace remove the two Phillips screws one 5 mm long screw near the top of the right brace one 3 mm long screw near the middle of the right brace Replacement Note When installing the replacement bezel brace with clutch assembly make sure the shorter 3 mm long screw is installed in the middle of the right bezel brace as shown Remove the two 5 mm long Phillips screws at the bottom bezel brace oo has Sj n _ x Bezel Brace with Clutch Assembly iBook G4 Take Apart 172 5 Lift the 3 sided bezel brace with clutch assembly off of the bezel _ 6 Install the replacement bezel brace with clutch assembly and reassemble and test the computer 173 iBook G4 Take Apart Bezel Brace with Clutch Assembly Service Source Troubleshooting iBook G4 12 inch Late 2004 2004 Apple Computer Inc All rights reserved Symptom Charts Symptom Charts How to Use the Symptom Charts The Symptom Charts included in this chapter will help you diagnose specific symptoms related to the product Because cures are listed on the charts in the order of most likely solution try the cures in the order presented Verify whether or not the product continues to exhibit the symptom If the symptom persists try the next cure Note If you have replaced a module reinstall the original module before you proceed to the next cure AirPor
64. pe at the antenna board 169 iBook G4 Take Apart Microphone Cable 5 Warning When removing the tape and spiral tube that bundles the microphone cable to the LCD cable be careful not to strain or pinch the cables Replacement Note When installing the replacement microphone cable reuse the spiral tube to bundle the microphone cable to the LCD cable However use new tape when bundling the cables together Separate the microphone cable from the LCD cable by removing the tape and uncurling the spiral tube 6 Remove the microphone cable from the assembly 7 Install the replacement microphone cable and reassemble and test the computer Microphone Cable iBook G4 Take Apart 170 Bezel Brace with Clutch Assembly Tools Soft cloth 0 Phillips screwdriver Replacement Note If the tape you remove from this assembly is worn and cannot be reused use new Kapton tape Apple part number 922 5025 Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield e AirPort Extreme Card e Memory card e Bottom case e Bottom shield e DC in board e Top case e Top shield e Modem Display module e LCD panel e Display clutch cover e Inverter board e Antenna board e Reed switch board e Microphone cable 171 iBook G4 Take Apart Bezel Brace with Clutch Assembly Procedure 1 2 With the bezel assembly lying on a soft cloth remove the three pieces of ta
65. rd into the slot until it is firmly seated Note If you feel resistance when inserting the card try pushing one side at a time 5 Gently push the top of the card down until the brackets snap onto both sides of the memory card to lock it into place Warning Apply gentle pressure to the memory card only Pressing on nearby connectors or components can cause electrical damage ee 6 Reassemble and test the computer 27 iBook G4 Take Apart Memory Card Bottom Case Bottom Case Tools Soft cloth e Torx T8 screwdriver or 2 0 mm hex nut driver e Black stick or other nonconductive nylon or plastic tool 0 Phillips screwdriver Part Location Preliminary Steps Before you begin remove the battery iBook G4 Take Apart 28 Procedure 1 Place the computer upside down on a soft cloth 2 Important To avoid damaging the case be careful that the screwdriver tip does not slip out of the screw head during removal Remove the three screws n 20mm 20mm 10mm aram ains 29 iBook G4 Take Apart Bottom Case 3 Using a black stick pry up the three rubber feet from the metal sockets Note When reassembling the computer do not reuse the feet Install three new rubber feet 4 Remove the three identical Phillips screws from the metal sockets 5 Use a black stick to lift out the metal sockets Note When reassembling the computer note that the metal sockets are keyed
66. refully work the black stick around the outer perimeter and corners of the bezel 137 iBook G4 Take Apart LCD Panel 3 Warning When lifting the assembly be careful not to strain the cables With the bezel assembly loosened grasp the display clutch and raise the assembly off of the display housing 4 Place the display assembly face down on a soft cloth LCD Panel iBook G4 Take Apart 138 5 Notice the U shaped notches on the sides of the bezel 6 Remove the four Phillips screws two on each side from the display shield Carefully move aside any cables or tape that partially block access to the screws 7 Peel up the foil tape that holds the LCD cable to the LCD shield 139 iBook G4 Take Apart LCD Panel 8 Peel up the tape if it covers the two screws at the clutch Remove the two Phillips screws LCD Panel iBook G4 Take Apart 140 10 Loosen the remaining tape that secures the shield to the assembly Remove the shield 11 On the back of the LCD panel grasp both sides of the LCD connector and gently rock and pull the connector to disconnect the LCD cable from the LCD panel ee taada t 1 MIT 2 a Poe ee eares UHL 141 iBook G4 Take Apart LCD Panel 12 At the other end of the LCD cable remove the tape from the bottom edge of the LCD panel 13 Warning When lifting the LCD panel be careful not to strain the inverter cable Carefully lift up the LCD panel pivot
67. river e Black stick or other nonconductive nylon or plastic tool Note To organize the screws you remove from the computer use a tray with divided compartments such as a plastic ice cube tray Part Location 97 iBook G4 Take Apart Optical Drive Preliminary Steps Before you begin remove the following e Battery e Keyboard and RAM shield AirPort Extreme Card e Memory card e Bottom case e Bottom shield e DC in board e Top case e Top shield Procedure 1 With the computer on a soft cloth peel up any tape on top of the optical drive 2 If you are replacing the optical drive with a new drive refer to Bluetooth in this chapter to remove the Bluetooth antenna and holder from the lower edge of the optical drive Note You do not need to remove the Bluetooth board Optical Drive iBook G4 Take Apart 98 3 Remove the following from the optical drive 5 mm long screw at upper right corner of drive 5 mm long screw at lower right corner of drive 7 5 mm long screw with identifiable collar under screw head at lower left corner of drive 3 mm long screw at upper left corner of drive Replacement Note When replacing the optical drive install the screws in the sequence shown below el gi i RNA a titi Wr i ul E i Pr A E aa ee D Ernm 4 Disconnect the optical drive ribbon cable from the logic board 99 iBook G4 Take Apart Optical Drive
68. ssing the key combination Control Option Shift power 12 iBook G4 12 inch Late 2004 Troubleshooting Symptom Charts Symptom Charts Warning Make sure you do not hold down the fn key when resetting the power manager Warning Resetting the power manager means you will also need to reset the date and time using the Date amp Time control panel 4 Replace the DC board 5 Replace the logic board Related article 88133 iBook Dual USB Using PowerBook G4 Adapter The computer runs when plugged into a wall outlet but not on battery power 1 2 3 Reseat battery to verify battery is seated correctly with battery lock engaged Try known good charged battery Reset the power manager by pressing the key combination Control Option Shift power Warning Make sure you do not hold down the fn key when resetting the power manager Warning Resetting the power manager means you will also need to reset the date and time using the Date amp Time control panel Replace logic board The cursor does not move when you are using trackpad 1 2 3 Verify that no USB device is connected Boot from a Mac OS system CD to verify that it is not a software problem Reset the power manager by pressing the key combination Control Option Shift power Warning Make sure you do not hold down the fn key when resetting the power manager Warning Resetting the power manager means you will also need to reset the
69. t Extreme Card AirPort Extreme Card not recognized 1 Use Software Update in Mac OS X system preferences or see the Apple Software Updates web page to make sure the latest version of AirPort software is installed Check Network pane in System Preferences to verify AirPort port is selected Reseat AirPort Extreme Card and make sure AirPort antenna cable is fully connected Remove and reinstall the AirPort software Replace with known good AirPort Extreme Card ao PE a oe Te Replace logic board AirPort Extreme Card installed and received a 3278 error 1 Check to make sure using the latest version of AirPort software Reseat AirPort Extreme Card 2 3 Remove and reinstall the AirPort software 4 Replace with known good AirPort Extreme Card 5 Replace logic board iBook G4 12 inch Late 2004 Troubleshooting 1 Poor AirPort reception 1 Refer to Knowledge Base article 88258 PowerBook G4 How to Optimize AirPort reception Reseat AirPort antenna and cable Check AirPort antenna cable for damage Replace with known good AirPort Extreme Card or ae IN Replace AirPort antenna board and cable Battery The battery won t charge 1 Remove any connected peripherals Try known good power outlet 2 3 Try known good power adapter and power cord 4 Try known good battery 5 Reset the power manager by pressing the key combination Control Option Shift power Warning Make sure you do not hold down the
70. the bottom case Placing the black stick nearly parallel to the slot drive opening carefully free the case from the remaining tabs at the slot drive side of the computer Note When reassembling the computer be careful not to pinch any cables as you press the bottom case back onto the computer Check that the bottom case shows no raised surfaces and is fully snapped into place before installing the remaining screws sockets and feet Bottom Case iBook G4 Take Apart 34 14 If you are replacing any additional parts at this time remove the two springs from the battery compartment so they do not fall out and get lost Note When reassembling the computer make sure that the two springs in the battery compartment are in place before installing the bottom case Each spring has a plastic cap on one end The cap should fit securely on the spring and the curved side of the cap should be positioned against the inner frame The springs have a small amount of grease on them do not wipe away the grease 15 Install the replacement bottom case and reassemble and test the computer 35 iBook G4 Take Apart Bottom Case Bottom Shield Tools Soft cloth 0 Phillips screwdriver e Black stick or other nonconductive nylon or plastic tool Note To organize the screws you remove from the computer use a tray with divided compartments such as a plastic ice cube tray Part Location Preliminary Steps Before you begin rem
71. tom shield make sure cables are routed as shown TON Usa a 2 iE ar D 39 iBook G4 Take Apart Bottom Shield How to Add Spiral Tubing to Protect the Inverter Cable The inverter cable can be pinched or damaged during reassembly of the bottom case To protect the inverter cable add spiral tubing to the cable as shown in this procedure Important Do not pull twist or strain the cable as you perform this procedure Tools Soft cloth e Black stick or other nonconductive nylon or plastic tool Preliminary Steps Before you begin remove the following Battery Bottom case Bottom shield Procedure 1 With the computer on a soft cloth peel up the tape that secures the inverter cable to the frame 2 Disconnect the inverter cable from the bottom of the logic board How to Add Spiral Tubing to Protect the Inverter Ca iBook G4 Take Apart 40 3 Release the cable from the channel in the frame 4 Holding the cable steady wrap the spiral tubing around the cable at the clutch 5 Make sure the tubing covers the cable where it exits the display 6 Route the cable through the channel in the frame and connect it to the logic board 41 iBook G4 Take Apart How to Add Spiral Tubing to Protect the Inverter Ca 7 Important Create enough slack in the cable near the connector to relieve tension on the cable Secure the connector and cable with a strip of Kapton tape as shown the az
72. top shield and is routed as shown Top Case iBook G4 Take Apart 52 6 Use a soft cloth to protect the computer 7 Using a black stick begin to carefully separate the top case from the computer assembly Reposition the computer as you work around the top case to open up the seam that joins the top case and bottom case Lis Aoig A 1 a ee En d or a 7 ak i a 8 While continuing to loosen the top case use caution around the battery bay If necessary flex the inner frame to release that corner of the top case 53 iBook G4 Take Apart Top Case 9 As you begin to loosen the top case check that the trackpad cable orange flex cable has disconnected from the top case Or use a black stick to disconnect it Replacement Note When the top case is removed the trackpad cable automatically disconnects from the logic board However when installing the top case use a black stick to press down on the connector and make sure the trackpad cable connects securely to the four pins on the logic board AW s Dh e Top Case iBook G4 Take Apart 54 10 Place the computer on its side and with most of the top case loosened tilt the top case away from the computer latch Warning The top case is connected to the computer assembly with delicate cables Do not remove the top case until the cables are disconnected see the next steps Warning When performing this step make sure the speaker cable and sh
73. u do not need to disconnect the antenna Note To avoid scratching the computer s case place a soft cloth between the AirPort Extreme Card and the surface of the iBook Keyboard and RAM Shield iBook G4 Take Apart 16 7 Ifan AirPort Extreme Card is not installed unlatch the flexible wire bracket to release the AirPort antenna cable 8 Remove the four screws that secure the RAM shield Y l ARRET E E E t p tis ds OS 7323 Fe k F T r F T p b k G b FFE F t p p g ss TETERE REE E EE m al oi T a i E mi 1 24 ie CR H 3 LLE 3 Lin a a ee ee LL Replacement Note Note the routing of the AirPort antenna cable When reinstalling the RAM shield make sure the antenna cable is routed as shown if there is no AirPort Extreme Card TAREE i 4 P N F fee 7 E T E Fr Si i Fa nd eer E de i e z nmi C m todd eh ted a a fie a i To Em rates 4 oy a gt Se oe di E La F us F ah eo ah phate gi lt lt Ls a ES soe Pa te ony Deer at er ee 1 ih i Lah E T th wi Baath i a 5 4 7 et beh eer ws iS g p I1 i in IE a a x T SS 17 iBook G4 Take Apart Keyboard and RAM Shield 9 Lift the RAM shield out of the computer 10 Route the
74. ws at the upper end of the thermal plate One 3 5 mm long screw and EMI clip at the lower left end of the thermal plate Replacement Note When installing the heatsink install the screws in the order shown Tii 5 Rii fmm Hex 2mm Hex 119 iBook G4 Take Apart Heatsink iBook G4 Early 2004 Replacement Note When installing the 3 5 mm long screw and EMI clip at the lower left end of the thermal plate make sure the EMI clip is installed as shown Heatsink iBook G4 Early 2004 iBook G4 Take Apart 120 2 Remove the two screws from the vent cover and tilt up the vent cover slightly 3 Use a black stick to tilt up the heatsink at the left side 4 Raise the vent cover as you lift the heatsink out of the computer assembly Warning The heatsink pipe can bend easily Use caution when removing or replacing the heatsink 121 iBook G4 Take Apart Heatsink iBook G4 Early 2004 5 Turn over the heatsink and note the position of the thermal pads Replacement Note Any time the heatsink is removed or a replacement heatsink is to be installed make sure new thermal pads are applied in the following orientation Smallest square pad at the top end o f the thermal plate e Largest pad near the top of the thermal plate e Small rectangular pad in the middle of the thermal plate e Mid sized square pad at the lower end of the thermal plate Replacement Note Make sure that the removable thermal bridge that

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