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84
Troubleshooting
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 sub card.
If the keyboard cable connection is correct, run the Keyboard Test. See
“Running the Diagnostics” for details.
If the tests detect a keyboard problem, do the following one at a time to
correct the problem. (Do not replace a nondefective FRU):
1. Reseat the keyboard cables.
2. Replace the keyboard.
3. Replace the System board.
The following auxiliary input devices are supported for this computer:
T
Numeric keypad
T
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, recheck the connector. If the problem is not
corrected, replace the device and then the System board.
720.book Page 84 Saturday, March 6, 1999 10:00 AM
Summary of Contents for 721TX - TravelMate - PII 333 MHz
Page 8: ...VIII Table of Contents 720 book Page VIII Saturday March 6 1999 10 00 AM ...
Page 62: ...54 System Utilities 720 book Page 54 Saturday March 6 1999 10 00 AM ...
Page 110: ...102 Troubleshooting 720 book Page 102 Saturday March 6 1999 10 00 AM ...
Page 128: ...120 FRU Field Replaceable Unit List 720 book Page 120 Saturday March 6 1999 10 00 AM ...
Page 130: ...122 Model Definition and Configuration 720 book Page 122 Saturday March 6 1999 10 00 AM ...
Page 136: ...128 Online Support Information 720 book Page 128 Saturday March 6 1999 10 00 AM ...
Page 142: ...134 Index 720 book Page 134 Saturday March 6 1999 10 00 AM ...