Lenovo ThinkPad X41 Hardware Maintenance Manual page 92

Removing and replacing a FRU
When installing: Follow the steps below to make sure
Note: After installing the upper case, route the wireless
LAN antenna cable as shown in 3a .
3a
Note: For the models have BMDC-3, route the wireless
LAN antenna cable and the Bluetoogh antenna
cable as shown in 3b .
3b
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that the upper case is installed firmly.