Troubleshooting

Symptom Charts/ Startup - 39

 

 

Startup

System is completely dead (no fan movement and power- on button is not lit)

1Verify the power outlet is good.

2Replace the power cord.

3Make sure the voltage switch on the back of the power supply is set to the correct voltage.

4Check for trickle voltage on the power supply connector. Refer to “Power Supply Verification” in this chapter. If verification fails, replace the power supply.

5Disconnect external devices, including the monitor, and start up the computer.

6Remove internal cards and start up the computer.

7Disconnect internal hard drives from the logic board and start up the computer.

8Check the modem connector (J27). If the connector has any bent pins, replace the logic board.

9Replace the logic board.

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Apple G4 manual Startup