Lenovo ThinkPad T490s Hardware Maintenance Manual page 110

Removal steps of the camera-and-microphone-module cable
Note: Depending on the type of the camera-and-microphone-module cable, the disconnection steps of the
cable might be different from the following illustration. For models without camera, skip the disconnection
steps of the cable.
Removal steps of the antenna kit
Attention: When you route the cables, ensure that they are not subject to any tension. Tension could cause
the cables to be damaged by the cable guides, or a wire to be broken.
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T490s and X390 Hardware Maintenance Manual