Lenovo ThinkCentre M72e, Руководство по техническому обслуживанию аппаратной части

Страница: 75 / 140

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 FRU description Self-service CRU Optional-service CRU
1
Computer cover Yes No
2
System fan
No Yes
3
Microprocessor No Yes
4
System board No No
5
Heat sink Yes No
6
Cover presence switch (Intrusion switch) Yes No
7
Memory module No Yes
8
Power switch board No Yes
9
ac power adapter Yes No
10
WiFi card module No Yes
11
Battery Yes No
12
Internal speaker No Yes
13
Hard disk drive or solid state drive No No
14
Keyboard Yes No
15
Mouse Yes No
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
Chapter 8
.
Locations
71