Lenovo ThinkPad S431 Hardware Maintenance Manual page 82

For models with an integrated thermal module
1. Remove the screws
Step Screw (quantity)
1
M2.5 × 4 mm, wafer-head, nylon-coated (2)
2
M2 × 3.5 mm, wafer-head, nylon-coated (3)
2. Open the keyboard bezel several inches
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Hardware Maintenance Manual
1 and screws 2 .
3 .
Color Torque
Black 0.196 Nm
(2.00 kgf-cm)
Black 0.196 Nm
(2.00 kgf-cm)