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2. If FRU code 10 appears, replace the system board
but do not replace the CPU card. Transfer the CPU
card from the old system board to the new system
board.
3. If FRU code 11 appears, reseat the CPU card.
4. Rerun the test to verify the fix.
5. If FRU code 11 remains, replace the CPU card.
If this procedure does not correct the problem, go to
“Undetermined Problems” on page 447.
Keyboard or 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 “1170 DSP Card or ESS Card” on page 480) or
Audio (ESS) card (see “Audio (ESS) Card Checkout
(765L)” on page 419).
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.
5. Press Ctrl+Pause to end the test.
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)
418 IBM Mobile Systems HMM