Lenovo L421 Laptop User Manual


 
Table 25. Removal steps of keyboard
1
When installing: Make sure the screw has been fastened to secure to keyboard.
Step Screw (quantity) Color
Torque
1
M2 × 5 mm, at-head, nylon-coated (1)
Black 0.181 Nm
(1.85 kgfcm)
2
4
2
3
5
6
7
When installing: Make sure all the connectors are attached rmly to the system board.
Step Screw (quantity) Color
Torque
84 Hardware Maintenance Manual