Lenovo ThinkStation P720 Hardware Maintenance Manual page 42

The following table lists the major FRUs shown in Figure 4 "Major FRUs and CRUs" on page 35 and identifies
which FRUs are also self-service CRUs or optional-service CRUs.
Notes:
• Self-service CRUs: Refer to parts that can be installed or replaced easily by customer themselves or by
trained service technicians at an additional cost.
• Optional-service CRUs: Refer to parts that can be installed or replaced by customers with a greater skill
level. Trained service technicians can also provide service to install or replace the parts under the type of
warranty designated for the customer's machine.
• FRUs: Refer to parts that must be installed or replaced only by trained service technicians. If customers
choose to replace the FRUs by themselves, the product warranty might be affected.
Number
1
Rear fan assembly
2
Heat sink and fan assembly 2 (available on some
models)
3
Heat sink and fan assembly 1
4
Internal speaker
5
Cover presence switch (intrusion switch)
6
Flex-bay bracket
7
Slim-optical-drive adapter (available on some
models)
8
Multi-drive conversion kit (available on some
models)
9
Optical drive (available on some models)
10
Front access storage enclosure (available on
some models)
11
Flex module (available on some models)
12
Front panel I/O cable
13
VROC upgrade key module (available on some
models)
14
Front fan assembly
15
Storage drive bay cover (available on some
models)
16
Hard disk drive, hybrid drive, or solid-state drive
17
M.2 solid-state drive heat sink
18
M.2 solid-state drive (available on some models)
19
M.2 solid-state drive holder
20
Blind-connect assembly (available on some
models)
21
Computer cover
22
Memory air baffles
36
P720 Hardware Maintenance Manual
FRU description Self-service CRU Optional-service CRU
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
No
No
No
No
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
No
No
Yes