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Apple ibook g4 12 inch mid 2005 User Manual

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Page 181

 
2 -  
iBook G4 (12-inch Mid 2005) Additional Proce-
 Checking the Optical Drive Cable 
Part Location
Preliminary Steps
 
Before you begin, remove the following:
• Battery 
• Keyboard and RAM shield
• Memory
• Bottom case 
• Bottom shield
• DC-in board
• Top case
• Top shield 

Page 182

 
iBook G4 (12-inch Mid 2005) Additional Procedures
 Checking the Optical Drive Cable 
Procedure
 
1. Check the cable for the supplier designation.
2. If the flex cable has a TennRich designation, 
• Check for a black dot near the cable end that connects to the optical drive. If there 
is no black dot, replace the optical drive cable. 
• If there is a black dot on the TennRich cable, the cable is good, and no further 
steps are needed.
3. If the cable has another suppliers designation, disconnect the...

Page 183

 © 2005 Apple Computer, Inc. All rights reserved. 

 
 
 
Service Source
Troubleshooting
 
iBook G4 (12-inch Mid 2005) 

Page 184

 iBook G4 (12-inch Mid 2005) Troubleshooting - 
 
1
 
 Symptom Charts 
Symptom Charts
 
How to Use the Symptom Charts
  The Symptom Charts included in this chapter will help you diagnose speci fic 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,...

Page 185

 
2 -   
iBook G4 (12-inch Mid 2005) Troubleshooting  Symptom Charts
4. Replace with known-good AirPort Extreme/Bluetooth card.
5. Replace logic board. 
Poor AirPort  reception
 
1. Refer to Knowledge Base article 88258: PowerBook G4: How to Optimize AirPort reception.
2.
 
Important:
 
 The AirPort Extreme/Bluetooth card has speci fic handling precautions. 
Make sure you review the section AirPort Extreme/Bluetooth Card in the Take Apart 
chapter before continuing.
Reseat AirPort Extreme/Bluetooth...

Page 186

 iBook G4 (12-inch Mid 2005) Troubleshooting - 
 
3
 
 Symptom Charts 
Error Beeps
 
The computer automatically performs a power-on self test when it is turned on after being 
fully shut down (not a restart). This section describes what to do if beeps are heard during 
the startup.  
Note:  
 The computer has a memory expansion slot that accepts a 1.25-inch (or shorter) 
PC-2700S or better, SO-DIMM memory card. Refer to the Memory Replacement 
instructions for removal and installation. 
Computer beeps...

Page 187

 
4 -   
iBook G4 (12-inch Mid 2005) Troubleshooting  Symptom Charts
Related articles:
58442: Power On Self-Test Beep Definition - Part 2
111772: iBook (Dual USB): Beeps Are Heard at Startup (one to four bee\
ps) 
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...

Page 188

 iBook G4 (12-inch Mid 2005) Troubleshooting - 
 
5
 
 Symptom Charts 
Keyboard
 
No response from any key on keyboard
 
1. Remove any connected peripherals.
2. Visually verify that no keys are stuck in the down position.
3. Boot from a Mac OS system CD to verify that it is not a software problem.
4. Turn off the computer. Disconnect the keyboard connector and inspect connectors.
5. Replace keyboard.
6. Replace logic board. 
The keyboard lock is damaged or wont lock
 
1. Verify that keyboard is...

Page 189

 
6 -   
iBook G4 (12-inch Mid 2005) Troubleshooting  Symptom Charts
10. Replace modem.
Related article:
106592: Mac OS X: How to Use Modem AT Commands 
Cannot send fax
 
1. Check that Network connection in System Preferences is set to Internal Modem.
2. Refer to Knowledge Base article 25746: Mac OS X 10.3: Fax doesnt send. 
Cannot receive fax
 
Check that Receive faxes on this computer is selected in the Print & Fax area of System 
Preferences.
Related articles: 25731: Mac OS X 10.3: Receiving faxes...

Page 190

 iBook G4 (12-inch Mid 2005) Troubleshooting - 
 
7
 
 Symptom Charts 5. Listen to verify that the disc spins.
6. Reseat optical drive cable.
7. Verify the logic board connection by trying a known-good optical drive and disc.
8. Replace optical drive cable.
9. Replace optical drive. 
The optical drive does not eject CD or DVD disc
 
1. Verify disc is not in use by quitting any applications that may be using the disc.
2. Press and hold Media Eject key at top right corner of keyboard. If that does not...
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