The server starts up to an Open Firmware prompt, or it may not turn on (no power). In some cases, it may not recognize the drive bays or display any video on the monitor.
Solution
In a small number of servers, the ATA controller board may not be seated, or inserted, securely. Follow these steps:
2. Open the Xserve as described in the documentation that comes with it.
3. Remove the clips from the ATA controller board.
4. Remove the ATA controller board by lifting the controller board straight up from its connection to the main logic board and drive backplane.
5. Visually inspect the connectors on the ATA controller board, the logic board connector, and the mid plane board connector for damage and foreign material.
6. Reinstall the ATA controller board by aligning both the connector on the main logic board side and aligning the connector on the backplane side and pressing both edges in firmly and at the same time. Do not install the board one end or one side at a time.
7. Make sure the clips are fastened correctly.