Specifications

8 -

iBook (14.1 LCD 16 VRAM) Troubleshooting

Symptom Charts

6. 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 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).

7. Disconnect keyboard completely. Inspect connectors. Restart with keyboard

disconnected.

8. Remove any additional RAM

9. Remove AirPort Card.

10. Try known-good DC board.

11. Verify power button is connected properly to logic board, if power button is not

functioning correctly or damaged, replace the top case.

12. Replace logic board.

At startup, a dialog box comes up stating: “kernel panic” in Mac OS X or

“Built-in memory test has detected an error” in Mac OS 9

1. If a RAM card is installed in the expansion slot, remove it and restart.

• If symptom repeats, replace logic board.

• If symptom does not repeat, replace RAM card with known-good RAM card and

restart.

2. If no RAM card is installed, replace logic board.

95136: iBook (Dual USB): Installing or Replacing Memory

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 down the

computer, then press the Power button to restart.

5. Connect an external display, and check for video on external display.