Apple powerbook g4 12 inch 1 5ghz User Manual

							PowerBook G4 (12-inch 1.5 GHz) Take Apart - 139
 Hinges with Bezel Brace
Identifying the Replacement Hinges
Before ordering a replacement hinge with bezel brace, verify the LCD panel manufacturer 
and hinge marking, as follows.
1. Check the manufacturer label shown on the LCD panel. 
						

							140 - PowerBook G4 (12-inch 1.5 GHz) Take Apart
 Hinges with Bezel Brace
2. If the label on the LCD panel shows Samsung as the manufacturer, order replacement 
hinges that show a SAM-L or SAM-R designation on the outer arm of the bezel brace. 
• To replace a SAM-L hinge, order 922-5714.
• To replace a SAM-R hinge, order 922-5713 
						

							PowerBook G4 (12-inch 1.5 GHz) Take Apart - 141
 Hinges with Bezel Brace 3. If the label on the LCD panel shows IDTech as the manufacturer, order replacement 
hinges that show an LG-L or LG-R designation on the outer arm of the bezel brace. 
• To replace a LG-L hinge, order 922-5712.
• To replace a LG-R hinge, order 922-5711 
						

							142 - PowerBook G4 (12-inch 1.5 GHz) Take Apart
 Display Bezel
Display Bezel
Part Location
Preliminary Steps
Before you begin, remove the following:
• Battery
• Memory door and memory card
• AirPort Extreme Card, if installed
• Keyboard
• Top case
• Hall effect sensor board and cable
• Hard drive
• Modem
• DC-to-DC board
• Heatsink with fan
• Inner frame (with RJ11 board attached)
• Logic board
• DC-in board
• Optical drive 
						

							PowerBook G4 (12-inch 1.5 GHz) Take Apart - 143
 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 1.5 GHz) 
						

							 
PowerBook G4 (12 1.5 GHz) 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.
 
Important:
 
  This computer starts up only in Mac OS X. Mac OS 9 is not available as a 
startup disk and previous versions of the Mac OS should not be installed on this computer. 
						

							 
2 - 
 
PowerBook G4 (12 1.5 GHz) TroubleshootingAirPort Extreme Card Symptom Charts
 
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. Reseat AirPort Extreme Card and make sure AirPort antenna cable is fully connected. 
3. Verify settings in Network Preferences pane.
4. Check that AirPort Extreme Card appears in Apple System Pro filer under Network 
overview in System Profile.
5. Replace with known-good AirPort Card. 
6. Replace logic board.
 
AirPort communication erratic
 
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. Make sure the computer is within antenna range of the other computer or the  network’s access point. 
 
Note:
 
 Nearby electronic devices or metal structures can interfere with wirele\
ss 
communication and reduce the antenna range. Repositioning or rotating th\
e 
computer may improve reception.
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.
 
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. 
						

							 
PowerBook G4 (12 1.5 GHz) Troubleshooting - 
 
3
 
Battery Symptom Charts
 
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 glow at power adapter connector.
4. 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 but\
ton. One to 
five lights glow to show the battery’s level of charge. One blinking \
light indicates that 
the battery does not have sufficient charge to turn on. 
5. Remove battery and reseat it.
6. Try known-good battery.
7. 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).
 
8. Update to Mac OS 10.2.4 or later, or boot from external device with 10.2.4.
9. Replace DC-to-DC board.
10. Replace logic board.
 
Battery wont charge completely
 
1. If battery reaches 96 percent and doesn’t charge further, this is normal operation. Refer to Knowledge Base article 88344: PowerBook G4, iBook: Battery Does Not 
Show Full Charge in Mac OS X.
2. If battery charges to 95 percent or less and stops charging before reaching 100  percent, replace DC-to-DC board.
 
Short battery life
 
Refer to Knowledge Base article 114154: SOP: Battery Screening Process--Worldwide.
1. Make sure that power adapter connector is fully inserted.
2. Try known-good power outlet. 
3. Try known-good power adapter and power cord. 
						

							 
4 - 
 
PowerBook G4 (12 1.5 GHz) TroubleshootingBattery Symptom Charts
4. The customer may be heavily loading the battery. Check the system setup to 
find out if 
it is set to highest performance all the time (AirPort on, optical media always in the 
drive, Energy Savings set to Highest Performance and so on).
Refer to Knowledge Base article 50666: Tips for maximizing your PowerBoo\
k and 
iBook battery charge
5. Remove all third-party devices (printers, hubs, third-party keyboard, or mice), and test  the computer.
6. Reset the Power Manager.
7. Calibrate the battery.
Related articles: 86440: PowerBook, iBook Life
86284: Calibrating your computers battery for best performance
 
Battery does not charge; shows an X in the menu bar icon; or status light 
on battery case does not go out 
 
1. Calibrate the battery.Refer to Knowledge Base article 86284: Calibrating your computers batte\
ry for best 
performance
2. Test the battery under a normal workload. If the battery lasts less than two hours, it is  considered to have severely degraded performance.
•  If the battery was purchased (either with the computer or as a standal\
one part) in the last 90 days and exhibits severely degraded performance (as defined\
 above) 
provide an in-warranty replacement. 
• If the battery was purchased between last 90-365 days, have the customer\
  calibrate their battery. If after recalibration the battery still exhibi\
ts severely 
degraded performance, then provide an in-warranty replacement. 
•  If the battery was purchased more than 365 days ago, the customer needs\
 to  purchase a new battery.