IBM ThinkPad T21 Hardware Maintenance Manual page 85

When installing the keyboard, do as follows:
1. Install the new keyboard, following the directions in the
figure. Make sure that the keyboard edges, shown in
the figure as (A), (B), and (C), are under the frame.
(A)
(continued)
ThinkPad T20, T21, T22 and T23 series
Removing and replacing a FRU
(B)
(C)
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