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Apple powerbook g4 12 inch dvi User Manual

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Page 31

PowerBook G4 (12-inch) Take Apart - 29
 Top Case8. Use a black stick running along the edge of the top case to loosen—but not remove—
the top case from the bottom case. Use equal pressure at the front, left, and right 
corners. 

Page 32

30 - PowerBook G4 (12-inch) Take Apart
 Top Case 9. In the keyboard well, pull up the looped end of the trackpad cable to disconnect it.
10. Raise the top case up slightly from the bottom case until you can access the cables 
that are connected under the top case.
11.Important: Do not forcefully remove the top case.
With the cables still connected, carefully move the top case aside to disconnect the 
microphone cable and power cable.
12. Remove the top case from the computer. 

Page 33

PowerBook G4 (12-inch) Take Apart - 31
 Top Case13. The top case includes the following:
• Microphone cable
• Trackpad and trackpad cable
• Power button and cable
• Tape
• Welded EMI strips
• Magnet in keyboard well 

Page 34

32 - PowerBook G4 (12-inch) Take Apart
 Top Case 14. Before installing a replacement top case, check the cable routing of the 
• Microphone cable
• Trackpad cable
• Power button cable
Make sure the cables are routed correctly and cannot be pinched when installing the 
top case.
15. Install the replacement top case, and reassemble and test the computer. 

Page 35

PowerBook G4 (12-inch) Take Apart - 33
 Reed Switch Board and Cable: PowerBook G4 (12-
Reed Switch Board and Cable: 
PowerBook G4 (12-inch)
Tools
This procedure requires the following tools:
• Phillips #0 screwdriver
• Black stick (or other nonconductive nylon or plastic flat-blade tool)
Part Location
Preliminary Steps
Before you begin, remove the following:
• Battery
• Memory door and memory card 
• Keyboard
• Top case 

Page 36

34 - PowerBook G4 (12-inch) Take Apart
 Reed Switch Board and Cable: PowerBook G4 (12-
Procedure
1. Remove the screw from the reed switch board. 
Warning:
 When replacing the board, make sure you use the same screw. A longer 
screw could scratch the optical media.
2. Tilt the board up and away from the tab at the battery area.
3. Lift up the tape from the corner of the optical drive, if provided.
4. Disconnect the 3-pin connector from CN4 at the DC-to-DC board. 
5. Install the replacement reed switch...

Page 37

PowerBook G4 (12-inch) Take Apart - 35
 Hall Effect Sensor Board and Cable: PowerBook G4 
Hall Effect Sensor Board and 
Cable: PowerBook G4 (12-inch 
DVI)
Tools
This procedure requires the following tools:
• Phillips #0 screwdriver
• Black stick (or other nonconductive nylon or plastic flat-blade tool)
Part Location
Preliminary Steps
Before you begin, remove the following:
• Battery
• Memory door and memory card 
• Keyboard
• Top case 

Page 38

36 - PowerBook G4 (12-inch) Take Apart
 Hall Effect Sensor Board and Cable: PowerBook G4
Procedure
1. Remove the screw from the hall effect sensor board. 
Warning:
 When replacing the board, make sure you use the same screw. A longer 
screw could scratch the optical media.
2. Remove the tape, if provided, from the corner of the optical drive, and disconnect the 
3-pin connector from CN4 at the DC-to-DC board. 
3. Remove the board with cable from the computer assembly.
4. Install the replacement hall...

Page 39

PowerBook G4 (12-inch) Take Apart - 37
 Hard Drive
Hard Drive
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 

Page 40

38 - PowerBook G4 (12-inch) Take Apart
 Hard Drive • Keyboard
• Top case
Procedure
1. Disconnect the hard drive flex cable.
2. Remove two screws from the hard drive bracket. 
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