Lenovo ThinkCentre M73z Hardware Maintenance Manual page 76

The following table lists the major FRUs shown in Figure 3 "Locating major FRUs and CRUs" on page 69 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
1
Frame stand
2
Computer cover
3
System board shield
4
Microprocessor fan
5
Handle bar
6
Heat sink assembly
7
Cover presence switch (Intrusion switch)
8
Microprocessor
9
Memory module
10
System board
11
Chassis
12
LCD panel
13
Battery
14
Card reader (optional)
15
Wi-Fi card (optional)
16
Rear I/O assembly
17
Internal speakers (2)
18
U-shaped stand
19
Power supply assembly
20
Control button board
21
Hard disk drive
22
Hard-disk-drive EMI shield
23
Converter board
24
Optical drive (optional)
25
®
VESA mount bracket
26
Integrated camera (optional)
27
Keyboard
28
Mouse
70
ThinkCentre M73z Hardware Maintenance Manual
FRU description
Self-service CRU Optional-service CRU
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No