Looking Up Fru Information - Lenovo ThinkCentre M72e Hardware Maintenance Manual

Figure 3. Locating FRUs and CRUs
The following table lists the major FRUs shown in Figure 3 "Locating FRUs and CRUs" on page 70 and
identifies which FRUs also are self-service CRUs or optional-service CRUs.
Notes:
• Self-service CRUs: These CRUs unplug or are secured by no more than two screws. Examples of
these types of CRUs include the keyboard, the mouse, any USB device, and the power cord. Other
Self-service CRUs depending on product design might include memory modules, adapter cards, hard
disk drives, and optical drives.
• Optional-service CRUs: These CRUs are isolated parts within the computer and are concealed by an
access panel that is typically secured by more than two screws. Once the access panel is removed, the
specific CRU is visible.
• The list of FRUs below is a partial list. For a complete listing of FRU information, such as FRU part
numbers and supported computer models, go to:
http:/www.lenovo.com/serviceparts-lookup
Number
1
Computer cover
2
System fan
3
Microprocessor
4
System board
5
Heat sink
6
Cover presence switch (Intrusion switch)
7
Memory module
8
Power switch board
9
ac power adapter
10
WiFi card module
11
Battery
12
Internal speaker
13
Hard disk drive or solid state drive
14
Keyboard
15
Mouse

Looking up FRU information

For detailed FRU information, such as the FRU part numbers and supported computer models, go to:
http:/www.lenovo.com/serviceparts-lookup
FRU description Self-service CRU Optional-service CRU
Yes
No
No
No
Yes
Yes
No
No
Yes
No
Yes
No
No
Yes
Yes
Chapter 8
No
Yes
Yes
No
No
No
Yes
Yes
No
Yes
No
Yes
No
No
No
71
.
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