Apple ibook g4 12 inch mid 2005 User Manual

							 
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 
						

							 
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 cable from the logic 
board and check the underside of the cable for yellow tape that covers the cable in the 
area shown.
• If there is no tape, tape the area to cover these dimensions 24 mm x 12.5 mm. 
Make sure the yellow tape is 12.5 mm long, covers the full width of the cable, and 
does not cover any part of the connector contacts to the logic board.
• If there is yellow tape and it correctly covers the area shown, the cable is good.  
Note:  
 This procedure applies to all suppliers of the optical drive flex cable for this 
computer. 
						

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

							
 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, reinstall the original module before you proceed to 
the next cure. 
AirPort Extreme/Bluetooth Card
 
AirPort Extreme/Bluetooth 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.
 
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 card and make sure AirPort antenna cabl\
e is fully 
connected. 
4. Remove and reinstall the AirPort software.
5. Replace with known-good AirPort Extreme/Bluetooth card. 
6. Replace logic board. 
AirPort Extreme/Bluetooth card installed and received a -3278 error
 
1. Check to make sure using the latest version of AirPort software.
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 card.
3. Remove and reinstall the AirPort software. 
						

							
 
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 antenna cables on card.
3. Check AirPort Extreme/Bluetooth antenna cables for damage.
4. Replace with known-good AirPort Extreme/Bluetooth card.
5. Replace AirPort Extreme/Bluetooth antenna cables. 
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.
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. Try known-good DC-in board and cable assembly.
7. Replace logic board. 
Short battery life
 
Refer to Knowledge Base article 114154: SOP: Battery Screening Process--Worldwide. 
						

							
 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 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  computer 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. 
						

							
 
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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 found in Drive Setup, verify the hard drive connections.
4. Try known-good hard drive with known-good OS X software installed.
5. Replace hard drive if test above passes.  
Important:  
 If the computer is under warranty and data recovery is required, refer \
to 
Article 31077: Hard Drive Data Recovery & Warranty Implications, for imp\
ortant 
information.
6. Replace logic board. 
The internal hard drive does not spin
 
1. Disconnect any connected peripherals.
2. Try known-good power outlet. Ensure system has power.
3. Try known-good power adapter and power cord. Ensure system has power.
4. Boot from a Mac OS system CD.
5. Verify Drive Setup does not recognize the hard drive.
6. Verify connections and check hard drive connector for damage.
7. Try known-good hard drive with known-good OS X software installed.
8. Replace hard drive if test above passes. 
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 (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 installed properly so the lock lines up with the notch in the top  case.
2. Replace keyboard. 
Keycap pops off
 
1. If the keycap and scissors mechanism 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.  
						

							
 
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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 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 CD or DVD (optical) disc drive does not accept disc (mechanical failure)
 
1. Verify disc is not warped.
2. Verify drive slot has no foreign object in channel.
3. Verify disc is properly seated in the carrier.
4. Replace optical disc drive. 
The CD or DVD (optical) 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 for the type of drive (a CD-ROM or CD-RW  drive reads CD discs only; a DVD-ROM or Combo drive reads CD or DVD discs).
2. Try cleaning the disc. If it is dirty or scratched, it may not mount.
3. Verify media is positioned correctly: data side down.
4. Try a different disc.  
						

							
 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 work,  hold down Function (fn) key and Media Eject key.
3. Drag disc icon to trash or select it and press Command-E.
4. Choose Restart from Apple menu while holding down trackpad button.
5. Refer to Take Apart to remove the stuck disc and replace the optical drive. Related article:
106752: Macintosh: How to Eject a Disc When Other Options Do Not Work 
The combo drive does not write at maximum speed
 
Refer to Knowledge Base article 86186: PowerBook G4, iBook: Combo Drive Does Not 
Write CD-R Media at Maximum Speed. 
Ports
 
The FireWire or USB port is not recognizing known devices
 
1. Completely shut down, then press the power button to start the computer.
2. Use Software Update in Mac OS X system preferences to verify that the latest  software is installed.
3. Use Apple System Pro filer to verify that the computer is recognizing the bus.
4. For USB, test ports with an Apple keyboard or mouse.
5. Verify USB port provides power to USB device.
6. For FireWire, test by connecting another computer in FireWire Target Disk Mode.  Refer to article 58583: How to Use FireWire Target Disk Mode.
7. Verify that drivers are installed properly for third party, if needed.
8. Try other port if available, or try a different cable.
9. Try known-good device.