Lenovo T420 User Manual
Page 110
7
Step
Screw (quantity)
Color
Torque
7
M2 × 3 mm, wafer-head, nylon-coated (1)
Black
0.181 Nm
(1.85 kgfcm)
Note: Applying labels to the base cover
The new base cover FRU is shipped with a kit containing labels of several kinds.
When you replace the base cover, you need to apply the following label:
17
Homologation label
The following labels need to be peeled off from the old base cover, and need to be put on the new base cover.
Note: If the COA label
1
is attached to a part that is replaced, return the old part with the label attached to
the customer, or provide a letter to the customer stating what the label was originally on the system and
what the label part number, serial number, and product key were.
1
Windows Certificate of Authentication label (COA)
2
Wireless LAN MAC address label
3
Information label
4
Ethernet MAC address label
104
ThinkPad T420 and T420i Hardware Maintenance Manual