Apple ibook g4 14 early 2004 User Manual

							 
iBook G4 (14-inch) Take Apart -   
170  
 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 module
• LCD panel
• Display clutch cover
• Inverter board
• Antenna board
• Reed switch board
• Microphone cable 
						

							 
171 -  
iBook G4 (14-inch) Take Apart
 Bezel Brace with Clutch Assembly  Procedure  Note:
   Although your bezel assembly might appear somewhat different than shown, the 
steps to follow are the same. 
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 shorter 3-mm long screw is installed in the middle of the 
right bezel brace, as shown.
4. Remove the two 5- mm long Phillips screws at the bottom bezel brace. 
						

							 
iBook G4 (14-inch) Take Apart -  
172  
 Bezel Brace with Clutch Assembly5. 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. 
						

							 
© 2003 Apple Computer, Inc. All rights reserved.
 

 
 
 
Service Source
Troubleshooting
 
iBook G4 (14-inch)
iBook G4 (14-inch Early 2004) 
						

							 
iBook G4 (14-inch) 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. 
The steps to solve a symptom are listed sequentially. You might not need to perform every 
step before the symptom is solved. Start with the first step, and then test for the symptom. 
If the symptom persists, replace any modules you removed, go to the next step, and test 
again. Continue down the list until the symptom is solved.
 
AirPort Extreme Card
 
AirPort Extreme Card not recognized
 
1. Use Software Update in Mac OS X system preferences or see the Apple Software 
Updates web page to make sure the latest version of AirPort software is installed.
2. Check Network pane in System Preferences to verify AirPort port is selected.
3. Reseat AirPort Extreme Card and make sure AirPort antenna cable is fully connected. 
4. Remove and reinstall the AirPort software.
5. Replace with known-good AirPort Extreme Card. 
6. Replace logic board.
 
AirPort Extreme Card installed and received a -3278 error
 
1. Check to make sure using the latest version of AirPort software.
2. Reseat AirPort Extreme Card.
3. Remove and reinstall the AirPort software.
4. Replace with known-good AirPort Extreme Card.
5. Replace logic board. 
						

							 
2 - 
 
iBook G4 (14-inch) 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 power cord.
 
Note:
 
 Verify that power adapter connector glows amber or green. If the power 
adapter light is green, turn over the computer and press the battery button. The 
battery lights should glow green and stay on if the power adapter is operating 
correctly.
4. Try known-good battery.
5. Reset the power manager by pressing the key combination Control-Option-Shift-
power. 
 
Warning: Make sure you do not hold down the fn key when resetting the 
power manager.
Warning: Resetting the power manager means you will also need to reset the 
date and time (using the Date & Time control panel).
 
6. Replace battery transfer board.
7. Replace logic board.
 
Short battery life
 
Refer to Knowledge Base article 114154: SOP: Battery Screening Process--Worldwide. 
						

							 
iBook G4 (14-inch) 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-100 compliant, SO-DIMM memory card. Refer to the Memory Replacement 
instructions for removal and installation.
 
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 expansion slot. The iBook does 
not accept EDO memory.
2. Replace RAM card with known-good and compatible RAM and restart. 
• If symptom repeats, replace logic board.
 
Computer beeps three times at startup
 
1. Three beeps means that no RAM banks passed memory testing.
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 four times at startup
 
1. Four beeps indicates a bad checksum for the remainder of the boot ROM. The ROM 
(which is located on the logic board) is bad.
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. 
						

							 
4 - 
 
iBook G4 (14-inch) 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 beeps)
 
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. (This is the same cable that attaches to the optical drive.)
5. Replace hard drive.
 
Important:
 
 If the computer is under warranty and data recovery is required, refer to 
Article 31077: Hard Drive Data Recovery & Warranty Implications, for important 
information.
6. Replace logic board.
 
The internal hard drive does not spin
 
1. Disconnect any connected peripherals.
2. Try known-good power outlet.
3. Try known-good power adapter and power cord.
4. Boot from a Mac OS system CD.
5. Verify Drive Setup does not recognize the hard drive.
6. Verify cable connections and check cables for damage.
7. Replace hard drive cable.
8. Replace hard drive.
 
Noisy hard drive
 
Some sounds such as ticking or a rotational noise are normal. Refer to Knowledge Base 
article 30593: PowerBook: Hard Drives and Noise. 
						

							 
iBook G4 (14-inch) Troubleshooting - 
 
5
 
 Symptom Charts
 
Keyboard
 
No response from any key on keyboard
 
1. Remove any connected peripherals.
2. Boot from a Mac OS system CD to verify that it is not a software problem.
3. Turn off the computer. Disconnect the keyboard connector and inspect connectors.
4. Replace keyboard.
5. Replace logic board.
 
The keyboard lock is damaged or wont lock
 
1. Verify that keyboard is installed properly: the lock aligns 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 tone
 
1. Check that the correct modem is selected. In Mac OS X, check Network Setup.
2. Verify known-good analog (not digital) telephone line.
3. Verify known-good RJ11 telephone cable.
4. Verify RJ11 cable is not plugged into Ethernet port.
5. Inspect RJ11 connector and modem port for pin damage. 
6. Verify RJ11 telephone cable is firmly installed in the modem port.
7. If using Apple Remote Access, select Ignore Dial Tone in the Modem control panel. If 
the modem connects with this settings selected, try another phone line. If using a 
terminal or communications program, enter atx1 to disable tone detection. To reset the 
modem back to the factory settings, enter atz.
8. Verify modem 2-pin connector is plugged into modem correctly.
9. Replace the modem 2-pin connector cable. 
10. Replace modem.
Related article: 106592: Mac OS X: How to Use Modem AT Commands 
						

							 
6 - 
 
iBook G4 (14-inch) Troubleshooting
 Symptom Charts
 
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 and connecting to the Internet
25596: Mac OS X 10.3: About Receiving Faxes
 
Modem drops connection
 
1. Try known-good phone line.
2. Refer to Knowledge Base article 106748: Mac OS X: Troubleshooting a dial-up/PPP 
Internet connection.
 
Optical Drive
 
The optical drive does not accept CD or DVD disc (mechanical failure)
 
1. Verify disc is not warped.
2. Verify disc is properly seated in the carrier.
3. Replace optical drive.
 
The disc icon does not show up on the desktop, or a dialog box appears to 
initialize disc
 
1. Verify the correct type of disc is being used.
2. Try cleaning the disc. It may not mount if dirty or scratched.
3. Try a different disc. 
4. Reseat optical drive cable.
5. Replace optical drive cable. (This is the same cable that attaches to the hard drive.)
6. 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 work, 
hold down Function (fn) key and Media Eject key.