IBM ThinkPad T40 Hardware Maintenance Manual page 78

Removing and replacing a FRU
Press the part indicated by the arrow 2 in the direction of
the arrow. Then release the latches of the keyboard from
the frame. The front side of the keyboard pops out.
2
Pull the keyboard a little in the direction of the arrow 3 ,
and then detach the connector 4 .
4
3
74
ThinkPad T40 Series (MT 2373, 2374, 2375, 2376)