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도움말

원문 게시자: mayer ,

본문:

Your machine does not have a PRAM battery.  It uses a small capacitor on the logic board that should last for 10-20 seconds while changing the main battery.  Your main 47Wh Lithium Ion may need to be replaced.  If it has a charge, reset the PRAM by starting up and holding down the Command - Option - P & R keys and wait till you hear it tone three times.

현황:

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