Apple ibook g4 User Manual

							 
iBook G4 Take Apart -   
60  
 Top Case16. 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.
  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. 
  
						

							 
61 -  
iBook G4 Take Apart
 Sleep Light Board  Sleep Light Board  Tools  • Soft cloth
• #0 Phillips screwdriver
• Black stick (or other nonconductive nylon or plastic tool)  Part Location
Preliminary Steps 
Before you begin, remove the following:
• Battery 
• Keyboard and RAM shield
• AirPort Extreme Card
• Memory card
• Bottom case
• Bottom shield
• DC-in board
• Top case 
						

							 
iBook G4 Take Apart -   
62  
 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. 
						

							 
63 -  
iBook G4 Take Apart
 Sleep Light Board 4. Remove the sleep light board and holder from the frame.
5. Install the replacement sleep light board, and reassemble and test the computer. 
						

							 
iBook G4 Take Apart -   
64  
 Display Latch  Display Latch  Tools  This procedure requires the following tools:
• Soft cloth
• Black stick (or other nonconductive nylon or plastic tool)  Part Location
Preliminary Steps 
Before you begin, remove the following:
• Battery 
• Keyboard and RAM shield
• AirPort Extreme Card
• Memory card
• Bottom case
• Bottom shield
• DC-in board
• Top case 
						

							 
65 -  
iBook G4 Take Apart
 Display Latch  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.
4. Carefully peel up the trackpad cable from the top case.
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. 
						

							 
iBook G4 Take Apart -   
66  
 Display Latch6. 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.
    
						

							 
67 -  
iBook G4 Take Apart
 Top Shield  Top Shield  Tools  • Soft cloth
• #0 Phillips screwdriver
• 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:
• Battery 
• Keyboard and RAM shield
• AirPort Extreme Card
• Memory card 
						

							 
iBook G4 Take Apart -  
68  
 Top Shield• Bottom case
• Bottom shield
• DC-in board
• Top case  Procedure  1. With the computer on a soft cloth, remove the 15 Phillips screws:
• Fourteen 3-mm long screws
• One 5.5-mm long screw 
						

							 
69 -  
iBook G4 Take Apart
 Top Shield   Replacement Note:
   When replacing the shield, install the screws in the order shown.