Apple powerbook g4 12 inch User Manual

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 Heatsink: PowerBook G4 (12-inch DVI)9. Install the replacement heatsink, and secure the screws using the following sequence:
Warning:
 Check the screw lengths before installing the screws. Installing a 
longer screw in the wrong place can permanently damage the bottom case or 
an internal part.
 
• Install the two 7.5-mm long spring screws half way.
• Install the remaining screws in the order indicated by the circled numbers in the 
following image.
• Tighten the two 7.5-mm long spring screws the rest of the way. 
10. Reassemble and test the computer. 
						

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 Inner Frame: PowerBook G4 (12-inch)
Inner Frame: PowerBook G4 
(12-inch)
Tools
This procedure requires the following tools:
• #0 Phillips screwdriver 
• Black stick (or other nonconductive nylon or plastic flat-blade 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:
• Battery
• Memory door and memory card
• Keyboard 
						

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 Inner Frame: PowerBook G4 (12-inch)• Top case
• Reed switch
• Hard drive
• Modem
• DC-to-DC board
• Heatsink with fan
Procedure
1. Note the cable routing and placement of tape before disconnecting cables. 
Replacement Note:
 Reserve the tape for securing cables after the frame 
replacement.  
						

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 Inner Frame: PowerBook G4 (12-inch) 2.Warning: The subwoofer cone, located below the right corner of the frame, is a 
sensitive device. Avoid touching the cone as you perform this procedure.
3. Disconnect the connector from the upper right corner of the logic board.
4. Remove the screw near the right corner of the frame.
5. Near the I/O ports, disconnect the
• long black cable from the 2-pin connector
• shorter black cable from the 4-pin connector 
						

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 Inner Frame: PowerBook G4 (12-inch)6. Pull up the LVDS cable with the pull tab
Warning: Be careful not to strain the LVDS cable.
7. Remove the screw at the LVDS cable.
Replacement Note:
 When reinstalling the LVDS cable, tuck the pull tab under the 
frame. 
						

							64 - PowerBook G4 (12-inch) Take Apart
 Inner Frame: PowerBook G4 (12-inch) 8. Peel up the tape, and remove the screw at the RJ11 modem cable board.
9. Tilt up the RJ11 modem cable board and remove the 6-mm long screw (not shown) 
that secures the frame to the logic board. 
						

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 Inner Frame: PowerBook G4 (12-inch)10. Remove the two screws at the I/O ports.
11. Remove the EMI strip at the top of the I/O ports. 
						

							66 - PowerBook G4 (12-inch) Take Apart
 Inner Frame: PowerBook G4 (12-inch) 12. Remove the three screws from the top of the heatsink.
13. Remove the two screws from the lower left corner of the computer assembly. 
						

							PowerBook G4 (12-inch) Take Apart - 67
 Inner Frame: PowerBook G4 (12-inch)14. Disconnect the optical drive flex cable.
15. Lift up the frame, being careful where it catches on the optical drive flex cable or other 
cables. 
						

							68 - PowerBook G4 (12-inch) Take Apart
 Inner Frame: PowerBook G4 (12-inch) 16. Lift the inner frame out of the computer assembly.
17. Remove the tape that secures the RJ11 board and cable to both sides of the frame. 
Transfer the RJ11 board and cable to the replacement frame.