Lenovo 3254ACU Hardware Maintenance Manual page 57

Table 8. Major FRUs and CRUs
No. FRU description
1
LCD unit
2
Power button sub card
3
Keyboard bezel
4
Backup battery
5
Wireless WAN card or mSATA solid-state drive
6
Half-size wireless WAN card bracket
7
Wireless LAN card
8
Battery pack
9
RJ45 sub card
10
DC-in connector
11
Optical drive or blank bezel
12
I/O sub card with USB connector and audio jack
13
Small bottom cover
14
Large bottom cover
15
Hard disk drive
16
Speaker assembly
17
Base cover assembly
18
CPU
19
Memory module
20
System board assembly
21
Thermal fan
22
Thermal pipes
23
Keyboard
24
TrackPoint cap
Self-service CRU Optional-service CRU
No No
No No
No No
Yes No
No Yes
No Yes
No Yes
Yes No
No No
No No
Yes No
No No
Yes No
Yes No
Yes No
No No
No No
No No
Yes No
No No
No Yes
No No
No Yes
Yes No
Chapter 7
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