Keyboard / Auxiliary Input Device Checkout (2640)

Keyboard / Auxiliary Input Device Checkout

Remove the external keyboard if the internal keyboard is to be tested.

If the internal keyboard does not work or an unexpected character appears, make sure that the three flexible cables extending from the keyboard are correctly seated in the connectors on the system board.

If the keyboard cable connection is correct, run the Keyboard Test by doing the following:
  1.  Go to advanced diagnostic menu screen  by pressing Ctrl+A  in the Easy Setup screen.
  2.  Press Ctrl+K, a layout of the keyboard  appears on the screen.
  3.  Check that when each key is pressed, the key's position  on the keyboard layout on the screen changes to a black square.

    NOTE:   When a Fn key is pressed, a black square briefly appears.

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

Do not replace a non-defective FRU.

The following auxiliary input devices are supported for this computer.

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

If the problem does not occur again, recheck the connector.
If the problem is not corrected, replace the device, and then the system board.

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