Lenovo ThinkPad 360 Hardware Maintenance Manual - Page 406
Keyboard/Auxiliary Input Device Checkout, TrackPoint III Checkout
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If above procedure does not correct the problem, go to "Undetermined Problems" on page 419. Keyboard/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 three flexible cables extending from the keyboard are correctly seated in the connectors on the interposer card. If the keyboard cable connection is correct, run the Keyboard Test by doing the following: 1. Go to diagnostic menu screen by pressing Ctrl+A in the Easy-Setup screen. 2. Press Ctrl+K; a layout of the keyboard appears on the screen. 3. Check that when each key is pressed, the key position on the keyboard layout on the screen changes to a black square. Note: When a Fn key is pressed, a black square briefly appears. If the tests detect a keyboard problem, do the following one at a time to correct the problem. Do not replace a non-defective FRU. Reseat the three cables. Replace the keyboard. Replace the interposer 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 the above devices do not work, reseat the cable connector and repeat the failing operation. If the problem does not occur again, recheck the connector. If the problem is not corrected, replace the device, and then the system board. TrackPoint III Checkout If the TrackPoint III will not work, check the configuration in the Easy-Setup by selecting Keyboard from the Config menu. If the configuration of the TrackPoint III is disabled, select Enable to enable it. If this does not correct the TrackPoint III problem, continue with the following. 396 IBM Mobile Systems HMM