Lenovo ThinkCentre E73z Hardware Maintenance Manual page 72

The following table lists the major FRUs shown in Figure 3 "Locating major FRUs and CRUs" on page 67 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 (with Microprocessor
underneath)
7
Memory module
8
Battery
9
System board
10
LCD bracket
11
LCD panel
12
Card reader
13
Wi-Fi
14
Foot stand
15
Rear I/O assembly
16
Internal speaker
17
Power supply
18
Internal speaker
19
Foot stand
20
Control button board
21
Hard disk drive
22
Hard-disk-drive EMI shield
23
LCD converter board
24
Optical drive
25
VESA mount bracket
26
Integrated camera
27
Keyboard
28
Mouse
68
ThinkCentre E73z 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
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
No
No
Yes
No
No
No
No
No
No
No