Lenovo ThinkPad Edge E420 Hardware Maintenance Manual page 76

Table 19. Removal steps of top case assembly (continued)
Step Screw (quantity)
3
M2 × 6 mm, wafer-head, nylon-coated (1)
When installing: Make sure that the connector is attached firmly to the system board.
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Hardware Maintenance Manual
Torque
Color
Black 0.181 Nm
(1.85 kgfcm)