Apple 550C Manual do Utilizador descarregar pdf (Página 170)

Additional Procedures Backup Battery Verification - 3

Backup Battery Verification

The backup battery saves the PRAM and power management

information on the logic board when the computer is shut

down. To check that the backup battery is working, follow

the procedures below.

1 Set the date and time.

2 Perform a Shut Down from the Apple Menu or Special

menu.

3 Remove the main battery and disconnect the power

adaptor for 10 minutes.

4 Connect the power adaptor, insert the battery, and power

on the computer.

5 If the date and time were lost, the backup battery may be

dead or discharged.

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Apple 550C Manual do Utilizador Página 170