Apple ibook g4 14 early 2004 User Manual

 
iBook G4 (14-inch) Troubleshooting - 
 
7
 
 Symptom Charts3. 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...

 
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iBook G4 (14-inch) Troubleshooting
 Symptom Charts 5. Try the other USB port.
6. Try known-good cable.
7. Try different USB device on same port.
8. Eliminate chain by plugging in only one peripheral.
9. Replace logic board.
 
Sound
 
Distorted sound from speakers
 
1. Verify sound is correct with external speakers/headphones. If sound is correct, replace 
top case.
2. Verify speaker cables are inserted correctly, and check cables for damage.
3. Check balance in System Preferences: Sound:...

 
iBook G4 (14-inch) Troubleshooting - 
 
9
 
 Symptom Charts
 
Startup
 
The computer will not power on
 
1. Remove any connected peripherals.
2. Try known-good power outlet.
3. Try known-good power adapter and power cord.
4. Remove battery.
5. Press Caps Lock key to see if light on key comes on. If it does, hold power button 
down for six seconds to shut down the computer and restart.
6. Reset the power manager by pressing the key combination Control-Option-Shift-
power. 
 
Warning: Make sure you do...

 
10 - 
 
iBook G4 (14-inch) Troubleshooting
 Symptom Charts
 
Display
 
No display, or dim display, but computer appears to operate correctly
 
1. Remove any connected peripherals.
2. Try known-good power outlet, power adapter and power cord.
3. Press F2 (with the fn key pressed and not pressed) to increase the screen brightness 
setting.
4. Reboot the computer—hold down the Control and Command keys and press the 
Power button, or press and hold the Power button for 5 to 10 seconds to shut down the...

 
iBook G4 (14-inch) Troubleshooting - 
 
11
 
 Symptom Chartsmillions of subpixels on a display, it is quite possible to have a low number of faulty 
transistors on an LCD. Therefore, a certain number of subpixel anomalies is considered 
acceptable. Rejecting all but perfect LCD panels would significantly increase the retail 
price for products using LCD displays. These factors apply to all manufacturers using LCD 
technology—not just Apple products.
To determine whether or not the display has an...

 
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iBook G4 (14-inch) Troubleshooting
 Symptom Charts 4. Replace adapter cable.
5. Replace logic board. 
 
The display is rolling (PAL instead of NTSC)
 
1. Make sure you are not using Apples A/V Video Cable.
2. Make sure you are using the S-Video and Composite adapter cable.
3. In Mac OS X, go to the Displays system preference to change the setting.
4. Try a different TV or VCR.
5. Try a different adapter cable
6. Replace logic board.
 
Display shows ghosting (signal reflection) 
 
1. Verify that...

 
iBook G4 (14-inch) Troubleshooting - 
 
13
 
 Symptom Chartsbattery lights should glow green and stay on if the power adapter is operating 
correctly.
3. 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).
 
4. Replace DC board. 
5. Replace logic board....

 
14 - 
 
iBook G4 (14-inch) Troubleshooting
 Symptom Charts 5. Replace top case.
6. Replace logic board.
 
The cursor intermittently does not move or moves erratically
 
Note:
 
 User must touch with the surface of only one finger at a time and point directly down 
on the trackpad surface.
1. Clean trackpad surface (with computer off, using a non-static-inducing material).
2. Completely shut down, then press the power button to start the computer.
3. Reset the power manager by pressing the key...

 
iBook G4 (14-inch) Troubleshooting - 
 
15
 
 Symptom Charts
 
The latching mechanism that holds the display closed is not working
 
Note: 
 
As the display closes against the top case, a hook in the top of the display housing 
should be magnetically pulled down into a slot in the top case, and secured. When the 
latch button is pushed, the hook should release and retract into the display housing, 
allowing the display to open.
1. Verify hook operation by exercising the latch mechanism. 
2. If the hook...

 
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iBook G4 (14-inch) Troubleshooting
 Symptom Charts
 
Block Diagram: iBook G4 (14-inch)
External
display
connector
Ethernet port FireWire port
Internal
speakers Headphone port
Internal
microphone AGP 4X
bus Memory bus133 MHz
MaxBus
Intrepid
memory
controller
and I/O
device
controller
PMU99
power controller
Trackpad
Keyboard
Power supply
and charger
SO-DIMM connector
(128 MB pre-installed
on 256 MB configs)
ATI Mobility
Radeon 9200
graphics IC
Flat-panel
display
Audio
system
Ethernet
PHY...