TP 765D/L - Keyboard or Other Input Device Checkout

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Service Hints & Tips

Document ID: GKEY-3JMM9E

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TP 765D/L - Keyboard or Other Input Device Checkout

Applicable to: World-Wide

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 -- Heading 'DSP' unknown --) or Audio (ESS) card (see ¿Audio (ESS) Card Checkout (765L)— on page 3).

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)

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.

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Hint Category

Hardware Maintenance Information

Date Created

03-07-97

Last Updated

07-04-98

Revision Date

13-03-99

Brand

IBM ThinkPad

Product Family

ThinkPad 765L, ThinkPad 765D

Machine Type

9546, 9547

Model

Various

TypeModel

Retain Tip (if applicable)

Reverse Doclinks
and Admin Purposes

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.

	Reseat the keyboard card cable.
	Replace the keyboard card cable.
	Replace the keyboard card assembly.
	Replace the video card.
	Replace the system board.

	Search Keywords
	Hint Category	Hardware Maintenance Information
	Date Created	03-07-97
	Last Updated	07-04-98
	Revision Date	13-03-99
	Brand	IBM ThinkPad
	Product Family	ThinkPad 765L, ThinkPad 765D
	Machine Type	9546, 9547
	Model	Various
	TypeModel
	Retain Tip (if applicable)
	Reverse Doclinks and Admin Purposes