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IBM-AUSTRIA - PC-HW-Support 30 Aug 1999 |
Keyboard or Auxiliary Input Device Checkout (TP 560Z - 2640)
Keyboard or Auxiliary Input Device Checkout
If the internal keyboard does not work or an unexpected
character appears, make sure that the flexible keyboard
cable is firmly connected to the system board. If it is firmly
connected, then run the Keyboard Test. If an external
keyboard is connected, remove it before running the
Keyboard Test for the internal keyboard. See 'Running the Diagnostics' for details.
NOTE: When the Fn key is pressed, a black square briefly appears.
If the Keyboard Test detects a keyboard problem, do the
following one at a time to correct the problem. Do not
replace a nondefective FRU:
- Replace the flexible keyboard cable.
- Replace the keyboard.
- 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 recur, the problem may have been in the connector. Recheck the connector.
If the problem is not corrected, replace the device and then the system board.
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