Lenovo ThinkPad T431s Hardware Maintenance Manual - Page 52

Major FRUs

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Major FRUs 25 24 23 22 21 20 19 18 17 16 15 14 13 Table 9. Major FRUs No. FRU descriptions 1 LCD unit 2 Speaker assembly 3 Keyboard bezel assembly 4 LED and power button board 5 Fingerprint reader bracket 6 Fingerprint reader 7 Thermal fan assembly 8 Memory module 9 Hard disk drive or solid-state drive 10 Hard disk drive bracket 11 SIM card tray 12 Base cover assembly 46 Hardware Maintenance Manual 1 2 3 4 5 6 7 8 9 10 11 12 Self-service CRU No No No No No No No No No No Yes No Optional service CRU No No No No No No No Yes Yes Yes No Yes

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Major FRUs
22
20
21
23
24
25
17
18
19
16
15
13
14
1
2
3
4
5
6
7
8
9
10
11
12
Table 9. Major FRUs
No.
FRU descriptions
Self-service
CRU
Optional service
CRU
1
LCD unit
No
No
2
Speaker assembly
No
No
3
Keyboard bezel assembly
No
No
4
LED and power button board
No
No
5
Fingerprint reader bracket
No
No
6
Fingerprint reader
No
No
7
Thermal fan assembly
No
No
8
Memory module
No
Yes
9
Hard disk drive or solid-state drive
No
Yes
10
Hard disk drive bracket
No
Yes
11
SIM card tray
Yes
No
12
Base cover assembly
No
Yes
46
Hardware Maintenance Manual