Lenovo ThinkPad T400s 2823 Hardware Maintenance Manual page 58

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ThinkPad T400s Hardware Maintenance Manual
Table 1. FRU tests (continued)
FRU Applicable test
Touch Pad If the Touch Pad does not work, check the configuration as
specified in the BIOS Setup Utility. If the Touch Pad is disabled,
select Automatic to enable it. If enabling the Touch Pad does not
correct the problem, continue with the following:
v Interactive Tests --> Mouse