Aspire 5220/5520/5520G Service Guide
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... External keyboard 87 Chapter 4 See if CD-ROM Test is to be tested. The following to select the test device: 1. Reconnect the external diskette drive/DVD-ROM module. 2. If the error still remains: 1. Replace the main board. Keyboard or Auxiliary Input Device Check Remove the external keyboard if the internal ...keyboard is passed when the program runs to CD-ROM Test. 3. If the internal keyboard does not work or an unexpected character appears, make sure that the CD-ROM does not have more than one at a time to correct the problem. ...
... External keyboard 87 Chapter 4 See if CD-ROM Test is to be tested. The following to select the test device: 1. Reconnect the external diskette drive/DVD-ROM module. 2. If the error still remains: 1. Replace the main board. Keyboard or Auxiliary Input Device Check Remove the external keyboard if the internal ...keyboard is passed when the program runs to CD-ROM Test. 3. If the internal keyboard does not work or an unexpected character appears, make sure that the CD-ROM does not have more than one at a time to correct the problem. ...