Apple ibook g4 User Manual

 
iBook G4 Take Apart -   
170  
 Microphone Cable5.
  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...

 
171 -  
iBook G4 Take Apart
 Bezel Brace with Clutch Assembly  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:
• Battery 
• Keyboard and RAM shield
• AirPort Extreme Card
• Memory card
• Bottom case
• Bottom shield
• DC-in board
• Top case
• Top shield
• Modem
• Display...

 
iBook G4 Take Apart -   
172  
 Bezel Brace with Clutch Assembly  Procedure  1. With the bezel assembly lying on a soft cloth, remove the three pieces of tape. 
2. Remove the two 5- mm long Phillips screws at the left bezel brace. 
3. 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...

 
173 -  
iBook G4 Take Apart
 Bezel Brace with Clutch Assembly 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. 

 
© 2004 Apple Computer, Inc. All rights reserved.
 

 
 
 
Service Source
Troubleshooting
 
iBook G4 (12-inch Late 2004) 

 
iBook G4 (12-inch Late 2004) Troubleshooting - 
 
1
 
 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,...

 
2 - 
 
iBook G4 (12-inch Late 2004) Troubleshooting
 Symptom Charts
 
Poor AirPort  reception
 
1. Refer to Knowledge Base article 88258: PowerBook G4: How to Optimize AirPort 
reception.
2. Reseat AirPort antenna and cable.
3. Check AirPort antenna cable for damage.
4. Replace with known-good AirPort Extreme Card.
5. Replace AirPort antenna board and cable.
 
Battery
 
The battery wont charge
 
1. Remove any connected peripherals.
2. Try known-good power outlet.
3. Try known-good power adapter and...

 
iBook G4 (12-inch Late 2004) Troubleshooting - 
 
3
 
 Symptom Charts
 
Computer beeps once at startup
 
1. One beep means that no RAM is detected.
2. 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.
3. 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...

 
4 - 
 
iBook G4 (12-inch Late 2004) Troubleshooting
 Symptom Charts
 
Hard Drive
 
Hard drive will not initialize
 
1. Boot from iBook Software Install CD and see if the hard drive mounts on the desktop.
2. 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.
3. If no hard drive is found in Drive Setup, verify the hard drive cable connections.
4. Replace hard drive cable.
5. Replace hard drive.
 
Important:
 
 If the...

 
iBook G4 (12-inch Late 2004) Troubleshooting - 
 
5
 
 Symptom Charts4. Replace keyboard.
5. Replace logic board.
 
The keyboard lock is damaged or wont 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...