Gateway p-79 manual Intermittent problems, Undetermined problems, Keyboard and touchpad

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Keyboard and touchpad

Symptom / Error	Action in Sequence
The keyboard (one or more keys) does not	■	Reconnect the keyboard cable.
work.	■	Test or replace the keyboard.
	■	Test or replace the system board.
The touchpad does not work.	■	Reconnect the touchpad cable.
	■	Test or replace the touchpad board.
	■	Test or replace the system board.

Important

If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined problems” on page 155.

Intermittent problems

Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect. These reasons include: cosmic radiation, electrostatic discharge, or software errors. FRU replacement should be considered only when a recurring problem exists.

To analyze an intermittent problem:

1Run the advanced diagnostic test for the system board in loop mode at least ten times.

•If any error is detected, replace the FRU.

•If no error is detected, do not replace any FRU.

2Rerun the test to verify that there are no more errors.

Undetermined problems

If the diagnostic test may not identify which adapter or device failed, which installed devices are incorrect, whether a short circuit is suspected, or whether the system is inoperative. Use these procedures to isolate the failing FRU (do not isolate a non-defective FRU).

Important

Verify that all attached devices are supported by the notebook.

Important

Verify that the power supply being used at the time of the failure is operating correctly. (See “Testing the power system” on page 141.)

To isolate a failing FRU:

1Turn off the notebook.

2Visually check FRU parts for damage. If you identify any damage, replace the FRU.

3Remove or disconnect all of the following devices:

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