Acer DT85 manual System test procedures, 139, Testing the optical drive

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System test procedures

Testing the optical drive

Use the following procedure to isolate a problem in an optical drive controller, driver, or drive.

Important

Make sure that the CD-ROM does not have any label attached to it. The label can cause damage to the drive or can cause the drive to fail.

To test the optical drive:

1Boot from the diagnostics diskette and start the diagnostics program.

2Run the CD-ROM Test and see if the test completes successfully.

3Follow the instructions in the message window.

If an error occurs, reconnect the connector on the system board. If the error still remains:

4Reconnect the external optical drive to a USB jack.

5Replace the external optical drive.

6Replace the system board.

Testing the keyboard or auxiliary input device

If the internal keyboard does not work or an unexpected character appears, make sure that the flexible cable extending from the keyboard is correctly seated in the connector on the system board. If the keyboard cable is connected correctly, run the Keyboard Test.

Important

Disconnect any external keyboards before testing the built-in keyboard.

If the tests detect a keyboard problem, do the following one at a time.

To correct the problem:

1Reconnect the keyboard cable to the system board.

2Replace the keyboard.

3Replace the system board.

Important

Do not replace a non-defective FRU.

The following auxiliary input devices are supported by this notebook:

•Numeric keypad

•External keyboard

If any of these devices do not work, reconnect the cable connector and repeat the failing operation.

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