Apple M9628LL Service Guide - Page 153

Startup, The computer will not power

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6. Reset PRAM (Press the power button, then hold down the Option-Command-P-R keys until you hear the startup chime at least one additional time after the initial startup chime). 7. Verify that the speaker cable is connected properly to logic board. 8. Replace top case. 9. Replace logic board Related article: 58463: iBook: Sound Capabilities 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. Press Caps Lock key to see if light on key comes on. If it does, hold power button down for six seconds to shut down the computer and restart. 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 Extreme 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. Symptom Charts iBook G4 (14.1 LCD) Troubleshooting - 7

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iBook G4 (14.1 LCD) Troubleshooting -
7
Symptom Charts
6.
Reset PRAM (Press the power button, then hold down the Option-Command-P-R
keys until you hear the startup chime at least one additional time after the initial
startup chime).
7.
Verify that the speaker cable is connected properly to logic board.
8.
Replace top case.
9.
Replace logic board
Related article:
58463: iBook: Sound Capabilities
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.
Press Caps Lock key to see if light on key comes on. If it does, hold power button
down for six seconds to shut down the computer and restart.
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 Extreme 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.