Apple powerbook g4 12 inch 1 33ghz User Manual

							PowerBook G4 (12-inch 1.33 GHz) Take Apart - 129
 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. 
						

							130 - PowerBook G4 (12-inch 1.33 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 1.33 GHz) Take Apart - 131
 Hinges with Bezel Brace3. 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 
						

							132 - PowerBook G4 (12-inch 1.33 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 1.33 GHz) Take Apart - 133
 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 1.33 GHz) 
						

							
 

PowerBook G4 (12-inch 1.33 GHz) Troubleshooting
 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. 
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.
 
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 Pro file.
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. 
						

							
 

2 - 
 
PowerBook G4 (12-inch 1.33 GHz) Troubleshoot- 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.
 
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
 
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. 
						

							
 

PowerBook G4 (12-inch 1.33 GHz) Troubleshooting
 Symptom Charts
 
Short battery life
 
Refer to Knowledge Base article 114154: SOP: Battery Screening Process--Worldwide.
 
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.
 
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 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 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. 
						

							
 

4 - 
 
PowerBook G4 (12-inch 1.33 GHz) Troubleshoot- Symptom Charts
 
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.
Related article: 58442: Power On Self-Test Beep Definition - Part 2
 
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 Recovery & Warranty Implications, for imp\
ortant 
information.
5. 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 Software and Restore DVD.
5. Verify Disk Utility does not recognize the hard drive.
6. Verify cable connections.
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.