Specifications

Troubleshooting Symptom Charts/Misc. Symptoms - 9
3. Important: Check the number of subpixel anomalies with the
following chart:
4. If the number of subpixel anomalies exceeds the acceptable number
listed in the chart, replace the display module.
5. If the number of subpixel anomalies is acceptable, explain to the
customer that the pixel anomalies are within specifications, and no
repair is necessary.
Important: Do not release the specifications to customers.
Instead, inform them that a certain number of subpixel anomalies is
considered acceptable, and these factors apply to all manufacturers
using LCD technology—not just Apple products.
Misc. Symptoms
The computer runs
with battery, but not
with the power
adapter plugged into
wall outlet
1 Try known-good power outlet.
2 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 button. The battery lights
should glow green and stay on if the power adapter is operating
correctly.
3 Reset the power manager by pressing the reset button
(located above and right of the Audio/Video port). Wait five
seconds before continuing. Press the power button to start the
computer.
Note: Make sure the reset button is not caught under the button
opening.
Warning: Resetting the power manager will permanently
remove a RAM disk, if present, and all of its contents. You will
also need to reset the date and time (using the Date & Time
control panel).
4 Replace DC board.
5 Replace logic board.
Related article 88133: iBook (Dual USB): Using PowerBook G4
Adapter
LCD Size
(inches)
Acceptable Number of Subpixel
Anomalies
Replace the Display
Bright Dark Combination Bright Dark Combination
12.1 to 15.2 up to 3 up to 5 up to 7 4 or more 6 or more 8 or more