Lenovo ThinkCentre M75n, Hardware Maintenance Manual, Page: 61 / 120

Number Description Self-service CRU Optional-service CRU
1
Computer cover
No No
2
System fan No No
3
Thermal pads (3) No No
4
System board No No
5
Wi-Fi card* No Yes
6
M.2 solid-state drive Yes No
7
Chassis
No No
8
Bottom cover Yes No
9
VESA
®
mount bracket kit* Yes No
10
Power adapter* Yes No
11
Power cord* Yes No
12
Mouse* Yes No
13
Keyboard* Yes No
14
Power adapter bracket kit* Yes No
15
DIN rail bracket kit* Yes No
16
Internal speaker No No
17
Heat sink No No
18
Coin-cell battery No No
19
Front Wi-Fi antenna and cable* No No
20
Rear Wi-Fi antenna cable* No No
21
Rear Wi-Fi antenna* Yes No
22
Rear I/O bracket No No
For detailed FRU and CRU information, such as the FRU part numbers and supported computer models, go
to:
http://www.lenovo.com/serviceparts-lookup
Major FRUs and CRUs (fanless models)
Your computer contains the following types of CRUs and FRUs:
• 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.
Chapter 6
.
Hardware removal and installation
55