Keyboard and Auxiliary Input Device Checkout (9546, 9547)

Keyboard and 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 flexible cable extending from the keyboard is correctly seated in the connector on the video card.

If the keyboard cable connection is correct, check the DSP card (see DSP Card Checkout or Audio Card (ESS) card (see Audio (ESS) Card Checkout).

If the tests do not detect a keyboard problem, run the Keyboard Test by doing the following:
  1.  Go to the diagnostic menu screen by  selecting Test  in the Easy-Setup menu.
  2.  Press Ctrl+A to enter to  the advanced diagnostic mode.
  3.  Press Ctrl+K, a layout of the keyboard  appears on the screen.
  4.  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 the 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 nondefective FRU.

The following auxiliary input devices are supported for this computer:

If any of these 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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