TroubleshootingSymptom Charts/Power - 3

Power

Screen is blank;

1

Restart computer.

computer doesn’t

2

Connect power adapter and restart computer in 3–4 minutes.

respond

3

Try known-good, charged main battery.

 

4

Check all interconnect board, daughterboard, and

 

5

motherboard connections.

 

Reset the power manager.

 

6

Test fuse on motherboard to make sure it is not open.

 

7

Replace keyboard.

 

8

Replace interconnect board.

 

9

Replace daughterboard.

 

10

Replace motherboard.

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Apple 540C, 520C manual Power