Lenovo Thinkpad S2 2nd Gen Hardware Maintenance Manual page 70

3. Pivot the keyboard slightly upward as shown by arrow
side of the keyboard. Then turn the keyboard over as shown by arrow
4. Put the keyboard on the palm rest and detach the connectors. Then remove the keyboard.
To install the new keyboard, do the following:
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13 2nd Gen and S2 2nd Gen Hardware Maintenance Manual
3 until you can see the connectors on the bottom
4 .