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

FRU description

Self-service CRU

Optional-service CRU

 

 

 

 

 

 

 

 

 

Frame stand

No

Yes

 

1

 

 

 

 

 

 

 

 

 

 

Computer cover

No

Yes

 

2

 

 

 

 

 

 

 

 

 

 

System board shield

No

No

 

3

 

 

 

 

 

 

 

 

 

 

Microprocessor fan

No

No

 

4

 

 

 

 

 

 

 

 

 

 

Handle bar

No

No

 

5

 

 

 

 

 

 

 

 

 

 

Heat sink assembly (with Microprocessor

No

No

 

6

 

 

 

 

underneath)

 

 

 

 

 

 

 

 

 

 

 

Memory module

No

No

 

7

 

 

 

 

 

 

 

 

 

 

Battery

No

No

 

8

 

 

 

 

 

 

 

 

 

 

System board

No

No

 

9

 

 

 

 

 

 

 

 

 

 

LCD bracket

No

No

 

10

 

 

 

 

 

 

 

 

 

LCD panel

No

No

 

11

 

 

 

 

 

 

 

 

 

Card reader

No

No

 

12

 

 

 

 

 

 

 

 

 

Wi-Fi

No

No

 

13

 

 

 

 

 

 

 

 

 

Foot stand

No

Yes

 

14

 

 

 

 

 

 

 

 

 

Rear I/O assembly

No

No

 

15

 

 

 

 

 

 

 

 

 

Internal speaker

No

No

 

16

 

 

 

 

 

 

 

 

 

Power supply

No

No

 

17

 

 

 

 

 

 

 

 

 

Internal speaker

No

No

 

18

 

 

 

 

 

 

 

 

 

Foot stand

No

No

 

19

 

 

 

 

 

 

 

 

 

Control button board

No

No

 

20

 

 

 

 

 

 

 

 

 

Hard disk drive

No

Yes

 

21

 

 

 

 

 

 

 

 

 

Hard-disk-drive EMI shield

No

No

 

22

 

 

 

 

 

 

 

 

 

LCD converter board

No

No

 

23

 

 

 

 

 

 

 

 

 

Optical drive

No

No

 

24

 

 

 

 

 

 

 

 

 

VESA mount bracket

No

No

 

25

 

 

 

 

 

 

 

 

 

Integrated camera

No

No

 

26

 

 

 

 

 

 

 

 

 

Keyboard

Yes

No

 

27

 

 

 

 

 

 

 

 

 

Mouse

Yes

No

 

28

 

 

 

 

 

 

 

68ThinkCentre E73z Hardware Maintenance Manual

Page 72
Image 72
Lenovo E73Z, 10BL manual Number FRU description Self-service CRU Optional-service CRU