Apple Xserve G5 - Manual (Page 84)

10 - Xserve G5 Troubleshooting Startup Symptom Charts
ports and ID button on the back of the board align with the openings in the chassis.
System shuts down intermittently
1. Verify that the system ID button on the back of the logic board aligns with the
opening in the chassis back panel. If it does not, realign the logic board.
2. Make sure the power cord is plugged in firmly.
3. Check that the power source is turned on and the correct voltage is present.
4. Make sure the air vents are clear.
5. Replace the power cord.
6. Check that the blower cables are connected and the blowers are operational.
7. Check that the heatsink is properly attached to the processor.
8. Reset the logic board. Refer to “Resetting the PMU on the Logic Board” in this
chapter.
9. Replace the power supply.
10. Replace the logic board. Note: When installing the new logic board, make sure the
ports and ID button on the back of the board align with the openings in the chassis.
System shuts down almost immediately after startup
1. Reset the logic board. Refer to “Resetting the PMU on the Logic Board” in this
chapter.
2. Replace the processor module.
3. Replace the power supply.
4. Replace the logic board. Note: When installing the new logic board, make sure the
ports and ID button on the back of the board align with the openings in the chassis.