Troubleshooting Resetting the Logic Board/ - 16
Resetting the Logic Board
Resetting the logic board can resolve many system problems (see
the Symptom/Cure tables for examples). Whenever you have a
unit that fails to power up, you should follow this procedure
before replacing any modules.
1 Unplug the computer.
2 Disconnect the cable that runs from the power supply to the
power filter board on the bottom side of the logic board/mass
storage chassis.
3 Press the Power On button on the front of the unit.
4 Remove the logic board/mass storage chassis from the unit.
5 Remove the battery from the logic board.
6 Wait at least 10 minutes before replacing the battery.
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