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CAUTION: Many repairs may only be done by a certified service technician. You should only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.

1Run the appropriate online diagnostic test. See "Using Server Administrator Diagnostics" on page 111.

2Enter the System Setup program and ensure that the SAS or SAS RAID controller daughter card is enabled. See "Using the System Setup Program" on page 31.

3Restart the system and press the applicable key sequence to enter the configuration utility program:

<Ctrl><C> for a SAS controller

<Ctrl><R> for a SAS RAID controller

See the controller's documentation for information about configuration settings.

4Check the configuration settings, make any necessary corrections, and restart the system. If the problem is not resolved, continue to the next step.

5Remove the bezel. See "Removing and Replacing the Front Bezel" on page 45.

6Turn off the system and attached peripherals, and disconnect the system from its electrical outlet.

7Open the system. See "Opening and Closing the System" on page 46.

8Ensure that the controller card is firmly seated in its connector. See "SAS Controller Daughter Card" on page 56.

9If you have a SAS RAID controller daughter card, ensure that the following RAID components are properly installed and connected:

Memory module

Battery

10Verify that the cable connections between the SAS backplane(s) and the SAS controller daughter card are correct. See "Installing a SAS Controller Daughter Card or SAS RAID Controller Daughter Card" on page 56.

11Ensure that the cables are firmly connected to the SAS controller daughter card and the SAS backplane board.

12Close the system. See "Opening and Closing the System" on page 46.

13Reconnect the system to its electrical outlet, and turn on the system and attached peripherals. If the problem persists, proceed as follows:

If you have a SAS controller daughter card, see "Getting Help" on page 125.

If you have a SAS RAID controller daughter card, replace the SAS RAID daughter card battery. See "Installing a RAID Battery" on page 60. If replacing the battery does not solve the problem, see "Getting Help" on page 125.

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Troubleshooting Your System

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