Apple ibook g4 12 inch late 2004 User Manual

 
iBook G4 (12-inch Late 2004) 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. 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...

 
10 - 
 
iBook G4 (12-inch Late 2004) 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...

 
iBook G4 (12-inch Late 2004) 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...

 
12 - 
 
iBook G4 (12-inch Late 2004) 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....

 
iBook G4 (12-inch Late 2004) Troubleshooting - 
 
13
 
 Symptom Charts
 
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 the DC board. 
5. Replace the logic board. 
Related article:
88133: iBook (Dual USB): Using PowerBook G4 Adapter
 
The computer runs when plugged into a wall outlet but not on battery power
 
1. Reseat...

 
14 - 
 
iBook G4 (12-inch Late 2004) Troubleshooting
 Symptom Charts
 
The cursor intermittently does not move or moves erratically
 
Note:
 
 User must touch with 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. 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....

 
iBook G4 (12-inch Late 2004) 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....

 
16 - 
 
iBook G4 (12-inch Late 2004) Troubleshooting
 Symptom Charts
 
Block Diagram
External
display
connector
Ethernet port FireWire port
Internal
speakers Headphone port
Internal
microphone AGP 4X
bus
Memory bus133 MHz
MaxBus
PMU99
power controller
Trackpad
Keyboard
Power supply and charger
SO-DIMM connector
ATI Mobility
Radeon 9200
graphics IC
Flat-panel
display
Audio
system
Ethernet
PHY
FireWire
PHY
PowerPC G4
microprocessor
(L2 cache: 512 KB)
256 MB on-board
SDRAM
PCI bus
Boot
ROM
USB 2.0 port...

 
© 2004 Apple Computer, Inc. All rights reserved.
 

 
 
 
Service Source
Views
 
                  iBook G4 (12-inch Late 2004) 

 
iBook G4 (12-inch Late 2004) Views - 
 
1
 
 
 
Slot-Load Optical Drive Side View
Ports Side View
Bottom Case View