Keyboard and Auxiliary Input Device Checkout
Note: 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 on the connector.
If the keyboard cable connection is correct, run the Keyboard Test.
See 'Running the Diagnostics' for details.
If the test detects 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: