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:
- Go to the diagnostic menu screen by
selecting Test
in the Easy-Setup menu.
- Press Ctrl+A to enter to
the advanced diagnostic mode.
- Press Ctrl+K, a layout of the keyboard
appears on the screen.
- 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.
- Reseat the keyboard card cable.
- Replace the keyboard card cable.
- Replace the keyboard card assembly.
- Replace the video card.
- Replace the system board.
The following auxiliary input devices are supported for
this computer:
- Numeric keypad
- Mouse (PS/2 compatible)
- External keyboard (with keyboard/mouse cable)
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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