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Apple ibook g4 14 early 2004 User Manual

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    							iBook G4 (14-inch) Take Apart - 110
     Heatsink: iBook G4 (14-inch)3. Remove the following from the heatsink:
    • Two 7-mm long hex screws with captive springs
    • Two 4.5-mm long Phillips screws
    • Two 3-mm long Phillips screws
    • One 2-mm long Phillips screw
    • One 2-mm long hex nut 
    Replacement Note: When replacing the heatsink, install the screws and hex nut in 
    the order shown. 
    						
    							111 - iBook G4 (14-inch) Take Apart
     Heatsink: iBook G4 (14-inch) 4. Use a black stick to tilt up the heatsink at the opposite corners.
    Warning: The heatsink pipe can bend easily. Use caution when removing or 
    replacing the heatsink.
    Lift the heatsink and fan out of the computer assembly.
    5. Refer to the next procedure—Fan—if you are replacing the heatsink and need to 
    transfer the existing fan to the new heatsink. 
    						
    							iBook G4 (14-inch) Take Apart - 112
     Heatsink: iBook G4 (14-inch)6. Turn over the heatsink and note the 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 the top of the thermal plate
    • Small rectangular pad in the middle of the thermal plate
    • Mid-sized square pad at the lower end of the thermal plate
    Replacement Note: If the thermal pads remain on the logic board, carefully remove 
    them with a black stick. Check for any thermal pad residue remaining on the chips. 
    						
    							113 - iBook G4 (14-inch) Take Apart
     Heatsink: iBook G4 (14-inch) 7. Install the replacement heatsink, and reassemble and test the computer.
    Note: When installing the replacement heatsink, make sure that the fan cable routes 
    underneath the frame.  
    						
    							iBook G4 (14-inch) Take Apart - 114
     Heatsink: iBook G4 (14-inch Early 2004)
    Heatsink: iBook G4 (14-inch 
    Early 2004)
    Tools
    • Soft cloth
    • #0 Phillips screwdriver
    • Black stick (or other nonconductive nylon or plastic tool)
    • 2.0 hex nut driver or needlenose pliers   
    Part Location
    Preliminary Steps
    Before you begin, remove the following:
    • Battery 
    • Keyboard and RAM shield
    • AirPort Extreme Card
    • Memory card 
    						
    							115 - iBook G4 (14-inch) Take Apart
     Heatsink: iBook G4 (14-inch Early 2004) • Bottom case 
    • Bottom shield
    • DC-in board
    • Top case
    • Top shield
    • Modem
    • Display
    • Vent cover
    Procedure
    1. With the computer assembly on a soft cloth, remove the tape from the fan cable. 
    2. Disconnect the fan from the underside of the logic board. 
    						
    							iBook G4 (14-inch) Take Apart - 116
     Heatsink: iBook G4 (14-inch Early 2004)3. Remove the following from the heatsink:
    • Two 7-mm long hex screws with captive springs
    • Two 4.5-mm long Phillips screws
    • Three 3-mm long Phillips screws
    • One 2-mm long Phillips screw
    • One 2-mm long hex nut 
    Replacement Note: When replacing the heatsink, install the screws and hex nut in 
    the order shown. 
    						
    							117 - iBook G4 (14-inch) Take Apart
     Heatsink: iBook G4 (14-inch Early 2004) 4. Use a black stick to tilt up the heatsink at the opposite corners.
    Warning: The heatsink pipe can bend easily. Use caution when removing or 
    replacing the heatsink.
    Lift the heatsink and fan out of the computer assembly.
    5. Route the fan cable from underneath the computer assembly. 
    						
    							iBook G4 (14-inch) Take Apart - 118
     Heatsink: iBook G4 (14-inch Early 2004)6. Refer to the next procedure—Fan—if you are replacing the heatsink and need to 
    transfer the existing fan to the new heatsink.
    7. Turn over the heatsink and note the 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:
    • Small rectangular pad at the upper end of the thermal plate
    • Largest pad in the middle of the thermal plate
    • Two pads at the lower end of the thermal plate 
    						
    							119 - iBook G4 (14-inch) Take Apart
     Heatsink: iBook G4 (14-inch Early 2004) Replacement Note: If the thermal pads remain on the logic board, carefully remove 
    them with a black stick. Check for any thermal pad residue remaining on the chips.
    8. Install the replacement heatsink, and reassemble and test the computer.
    Note: When installing the replacement heatsink, make sure that the fan cable routes 
    underneath the frame. 
    Replacement Note: The heatsink has a small EMI clip that fits between one screw 
    and the thermal plate near the LVDS cable. Make sure the EMI clip is in place before 
    reassembling the computer. 
    						
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