Apple 540C, 520C manual Power Manager Reset

Additional Procedures Power Manager Reset - 6

Power Manager Reset

Reset the power manager if:

• The battery and power adapter are proven good, but the computer will not power on.

• The computer will not reset after a system crash.

To reset the power manager in the PowerBook 500 Series,

1Remove the AC adapter and the battery.

2Let the unit sit without power hooked up for 3–5 minutes.

3Simultaneously hold down the Control, Command, Option, and Power On keys for 5–10 seconds.

4Reinstall the battery and, if necessary, reconnect the AC adapter.

5Turn on the computer.