IBM X220I manual Applying labels to the base cover

Table 22. Removal steps of DC-in connector, base cover, fan, digitizer pen case, and pen switch assembly (continued)

Step	Screw (quantity)	Color	Torque
	M2 × 3.5 mm, flat-head, nylon-coated (1)	Silver	0.181 Nm
11
			(1.85 kgfcm)

When installing:

•Before you attach the fan assembly to the computer, apply thermal grease, at an amount of 0.2 grams, on the

part marked as in the following figure. Either too much or too less application of grease can cause a thermal problem due to imperfect contact with a component. You need to peel the thin film off from the rubber b .

•Make sure that the DC-in connector, the fan connector, and the pen switch connector are attached to the system board firmly.

b

a

a

Applying labels to the base cover:

The new base cover FRU is shipped with a kit containing labels of several kinds.

Note: If the Windows Authentication label (COA) 2 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.

When you replace the base cover, you need to apply the following labels:

19

20

Homologation label

Product label

The following labels need to be peeled off from the old base cover, and need to be put on the new base cover.

1

2

3

4

5

6

7

China telecom label

Windows Certificate of Authentication label (COA) SIM label

BTY word label

Asset tag

IMEI label

Brazil WWAN label

88ThinkPad X220 Tablet and X220i Tablet Hardware Maintenance Manual