16Run the appropriate online diagnostic test to see whether the diskette drive works correctly.

If the tests run successfully, an expansion card may be conflicting with the diskette drive logic, or an expansion card may be faulty. Continue to the next step.

If the tests fail, see "Getting Help" on page 147.

17Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.

18Open the system. See "Opening the System" on page 53.

19Reinstall one of the expansion cards you removed in step 13. See "Installing an Expansion Card" on page 68.

20Close the system. See "Closing the System" on page 53.

21Reconnect the system to the electrical outlet, and turn on the system and attached peripherals.

22Run the appropriate online diagnostic test to see whether the diskette drive works correctly.

23Repeat step 17 through step 22 until all expansion cards are reinstalled or one of the expansion cards causes the tests to fail.

If the problem is not resolved, see "Getting Help" on page 147.

Troubleshooting an Optical Drive

Problem

System cannot read data from a CD or DVD in an optical drive.

Optical drive indicator does not blink during boot.

Action

CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the components inside the system. Before performing any procedure, see your Product Information Guide for complete information about safety precautions, working inside the computer and protecting against electrostatic discharge.

1Remove the bezel. See "Removing the Bezel" on page 50.

2Try using a different CD or DVD that you know works properly.

3Enter the System Setup program and ensure that the drive’s IDE controller is enabled. See "Using the System Setup Program" on page 35.

4Run the appropriate online diagnostic test. See "Using Server Administrator Diagnostics" on page 135.

5Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.

6Open the system. See "Opening the System" on page 53.

7Ensure that the interface cable is securely connected to the optical drive and to the controller.

8Ensure that a power cable is properly connected to the drive.

Troubleshooting Your System

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Dell 2900 owner manual Troubleshooting an Optical Drive, 127