Lenovo ThinkPad X220 4287 Hardware Maintenance Manual page 96

Table 23. Removal steps of LED board
Step Screw (quantity)
2
M2 × 3.5 mm, wafer-head, nylon-coated (1)
When installing: Make sure that connector
90
ThinkPad X220 and X220i Hardware Maintenance Manual
1
is attached firmly.
Color Torque
Silver 0.181 Nm
(1.85 kgfcm)