Apple powerbook g4 12 inch dvi User Manual

PowerBook G4 (12-inch) Take Apart - 149
 Display Bezel• Display module
• Display housing
• LCD panel
• Inverter (and antenna cable assembly)
Procedure
When all preliminary steps are performed, the display bezel is the part that remains. 

 

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Service Source
Troubleshooting
 
PowerBook G4 (12-inch)
PowerBook G4 (12-inch DVI) 

 

PowerBook G4 (12-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....

 

2 - 
 
PowerBook G4 (12-inch) Troubleshooting Symptom Charts
3. Check the signal strength shown in the AirPort status icon in the menu bar. Up to four 
bars can appear.
4. If the symptom remains, refer to the Knowledge Base for the latest articles on  computer placement and how to optimize AirPort performance.
 
Battery
 
Battery wont charge
 
1. Make sure that power adapter connector is fully inserted.
2. Remove any connected peripherals.
3. Try known-good power outlet. Green or amber light should...

 

PowerBook G4 (12-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-2100 compliant, SO-DIMM memory card. Refer to the Memory Replacement 
instructions for removal and installation.
 
Computer beeps...

 

4 - 
 
PowerBook G4 (12-inch) Troubleshooting Symptom Charts
 
Hard Drive
 
Hard drive will not initialize
 
1. Boot from Software and Restore DVD. Under the File menu, select Disk Utility, and 
see if the hard drive appears on the list.
2. If no hard drive is found in Disk Utility, verify the hard drive cable connections.
3. Replace hard drive cable.
4. Replace hard drive.
 
Important:
 
 If the computer is under warranty and data recovery is required, refer \
to 
Article 31077: Hard Drive Data...

 

PowerBook G4 (12-inch) Troubleshooting - 
 
5
 
 Symptom Charts
 
Modem
 
No modem dial tone
 
1. Check that the correct modem is selected in the Network Preferences pane. In Modem tab, check that sound is not turned off.
2. It is possible that the modem is connecting but not generating a sound. Check Internet  Connect to verify status.
3. Verify known-good analog (not digital) telephone line.
4. Verify known-good RJ11 telephone cable.
5. Verify RJ11 cable is not plugged into Ethernet port.
6....

 

6 - 
 
PowerBook G4 (12-inch) Troubleshooting Symptom Charts
 
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...

 

PowerBook G4 (12-inch) Troubleshooting - 
 
7
 
 Symptom Charts
 
Sound
 
Distorted sound from speakers
 
1. Verify sound is correct with external speakers/headphones. If sound is correct, replace top case.
2. Check balance in Sound preference pane.
3. Replace rear panel assembly with attached speakers. 
4. Replace subwoofer. 
 
No sound from speaker(s)
 
1. Use the Software Update preference pane to verify that the latest software updates  have been installed.
2. Press the F3 key to verify that mute...

 

8 - 
 
PowerBook G4 (12-inch) Troubleshooting Symptom Charts
 
Startup
 
The computer will not power on
 
1. Make sure that power adapter connector is fully inserted.
2. Remove any connected peripherals.
3. Try known-good power outlet.
4. Try known-good power adapter and power cord.
5. Remove battery.
6. 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.
7. Reset the power manager by pressing the key...