System Board
The | processing | functions for the computer are performed |
by | the system | board. When a numeric code calls out the |
system board, use the following procedure to isolate the problem.
1.Run the system board test to verify the symptom. This test verifies the system board. If no error is detected, return to “General Checkout” on page 25.
2. | If FRU | code | 10 | appears, | replace the system board. |
3. | Rerun the | test | to | verify | the fix. |
If above procedure does not correct the problem, go to “Undetermined Problems” on page 42.
Keyboard/Auxiliary Input Device
Checkout
Remove the external keyboard if the internal keyboard is be tested.
If the internal keyboard does not work or an unexpected character appears, make sure that the three flexible ca extending from the keyboard are correctly seated in the connectors on the system board.
If the keyboard cable connection is correct, run the
Keyboard Test by doing the following:
1. | Go | to | advanced diagnostic menu screen | by pressing | |||
| Ctrl +A | in | the | basic | diagnostic | menu. |
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2. | PressCtrl +K ; a | layout | of the | keyboard | appears on | ||
| the | screen. |
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3.Check that when each key is pressed, the key position on the keyboard layout on the screen changes to a black square.
Notes:
a. When a Fn key is pressed, a black square briefly appears.
b. Press the Esc key to return to the diagnostic menu.
If the tests detect a | keyboard problem, | do | the followin | |
one at a time to | correct | the problem. Do | not | replace a |
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Ÿ Reseat the three cables.
ŸReplace the keyboard.
ŸReplace the system board.
The following auxiliary input devices are supported for th computer.
ŸNumeric keypad
Ÿ Mouse (PS/2 compatible)
ŸExternal keyboard (with keyboard/mouse cable)
ThinkPad 340x (IBM 2610)27