TroubleshootingSymptom Charts/Power - 6

Power

Screen is blank;

1

Simultaneously press <Command> <Control> <Power On> keys

computer does not

2

to reset computer.

respond

Connect power adapter and reboot computer in 3-4 minutes.

 

3

Try known-good, charged main battery.

 

4

Check all logic board cable connections.

 

5

Replace logic board.

Note: When replacing the logic board, check that the EMI clips are securely attached to the CPU stiffener. The “CPU Stiffener” topic in Take Apart helps you locate and identify the two EMI clips. If both clips are not secure, replace the CPU stiffener.

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Apple 230, DUO 280C, DUO 27C, 250, POWERBOOK DUO FLOPPY ADAPTER manual Power