Lenovo 42963L5 User Manual - Page 94

Applying labels to the base cover

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Table 22. Removal steps of DC-in connector, base cover, fan, digitizer pen case, and pen switch assembly (continued) Step 11 Screw (quantity) M2 × 3.5 mm, flat-head, nylon-coated (1) Color Silver Torque 0.181 Nm (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 a 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. When you replace the base cover, you need to apply the following labels: 19 Homologation label 20 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 China telecom label 2 Windows Certificate of Authentication label (COA) 3 SIM label 4 BTY word label 5 Asset tag 6 IMEI label 7 Brazil WWAN label 8 Wireless card label (only for Brazil) 9 Modem AMOM label 10 MEDEM label (only for PRC model) 88 ThinkPad X220 Tablet and X220i Tablet Hardware Maintenance Manual

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Table 22. Removal steps of DC-in connector, base cover, fan, digitizer pen case, and pen switch assembly (continued)
Step
Screw (quantity)
Color
Torque
11
M2 × 3.5 mm, flat-head, nylon-coated (1)
Silver
0.181 Nm
(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
a
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.
a
b
a
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 labels:
19
Homologation label
20
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
China telecom label
2
Windows Certificate of Authentication label (COA)
3
SIM label
4
BTY word label
5
Asset tag
6
IMEI label
7
Brazil WWAN label
8
Wireless card label (only for Brazil)
9
Modem AMOM label
10
MEDEM label (only for PRC model)
88
ThinkPad X220 Tablet and X220i Tablet Hardware Maintenance Manual