Lenovo ThinkCentre M900z 10F2, Руководство по техническому обслуживанию аппаратной части, Страница: 41 / 146

Figure 4. Major FRUs and CRUs
The following table lists the major FRUs shown in the illustration above and identifies which FRUs are
also 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.
Number FRU description Self-service CRU Optional-service CRU
1
UltraFlex II Stand
Yes No
2
Tilt-only monitor stand base Yes No
3
Tilt-only monitor stand Yes No
4
Back cover Yes No
5
Computer cover No No
6
Side I/O cover
No No
7
Memory module shield Yes No
8
System board shield No No
9
Side I/O bracket
No No
10
VESA mount bracket No No
11
Cover presence switch (intrusion switch) No No
12
Wi-Fi antennas (2) No No
13
Integrated camera No No
14
Heat sink No No
15
LCD panel
No No
16
Coin-cell battery No No
17
System board No No
18
Wi-Fi card No No
19
Memory module Yes No
20
Card reader No No
21
Serial connector module
No No
22
Power cord Yes No
23
Thermal sensor No No
24
Internal speakers (2) No No
25
Power supply assembly No No
26
Storage drive
Yes No
27
Optical drive holder No No
28
Optical drive No No
Chapter 2
.
Product overview
33