Lenovo ThinkPad T431s Hardware Maintenance Manual - Page 53

Table 9. Major FRUs continued

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Table 9. Major FRUs (continued) No. FRU descriptions 13 Battery pack 14 Hard disk drive or solid-state drive sub card 15 Backup battery 16 M.2 wireless WAN card 17 M.2 wireless LAN card 18 Media card reader slot 19 System board 20 VGA connector 21 VGA connector bracket 22 Clickpad 23 Smart card bezel 24 DC-in cable 25 Keyboard Self-service CRU No No No No No No No No No No No No No Optional service CRU No No Yes Yes Yes No No No No No No No Yes Chapter 7. Locations 47

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Table 9. Major FRUs (continued)
No.
FRU descriptions
Self-service
CRU
Optional service
CRU
13
Battery pack
No
No
14
Hard disk drive or solid-state drive sub card
No
No
15
Backup battery
No
Yes
16
M.2 wireless WAN card
No
Yes
17
M.2 wireless LAN card
No
Yes
18
Media card reader slot
No
No
19
System board
No
No
20
VGA connector
No
No
21
VGA connector bracket
No
No
22
Clickpad
No
No
23
Smart card bezel
No
No
24
DC-in cable
No
No
25
Keyboard
No
Yes
Chapter 7
.
Locations
47