Lenovo ThinkPad L390 User Manual page 52

7. Pivot the keyboard slightly upward as shown by arrow 1 . Then turn the keyboard over as shown by
arrow 2 .
8. Put the keyboard on the palm rest as shown and detach the connectors. Then remove the keyboard.
9. Attach the connectors and turn the keyboard over as shown.
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L390, L390 Yoga, S2 4th Gen, and S2 Yoga 4th Gen User Guide