Lenovo ThinkStation P320 Hardware Maintenance Manual page 18

The following table lists the major FRUs shown in Figure 4 "Major FRUs and CRUs" on page 9 and identifies
which FRUs are also self-service CRUs or optional-service CRUs.
Notes:
• Self-service CRUs: Parts to be installed or replaced by customer themselves.
• Optional-service CRUs: Parts can be installed or replaced by customers or technicians under certain
terms of the applicable warranty service type for your country or region.
• Non-CRUs: Parts must be installed or replaced only by trained service technicians.
Number
1
Power supply assembly
2
Slim Optical Drive Adapter or Multi-drive
Conversion Kit (available on some models)
3
Front-access storage enclosure (available on
some models)
4
5.25-inch flex module (available on some models)
5
Optical drive (available on some models)
6
Front Wi-Fi antenna (available on some models)
7
Card reader
8
Front audio and USB assembly
9
Front bezel
10
Power button
11
System fan
12
Internal speaker
13
Thermal sensor
14
Cover presence switch (also called intrusion
switch, available on some models)
15
Hard disk drive or hybrid drive
16
Solid-state drive
17
M.2 solid-state drive (available on some models)
18
M.2 solid-state drive adapter (available on some
models)
19
Wi-Fi card module (available on some models)
20
Wi-Fi adapter card (available on some models)
21
Rear Wi-Fi antenna (available on some models)
22
System board
23
Coin-cell battery
24
Microprocessor
25
Memory modules
26
PCIe card (available on some models)
10
P320 Hardware Maintenance Manual
FRU description Self-service CRU Optional-service CRU
No
Yes
Yes
Yes
Yes
No
No
No
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes
Yes
No
No
Yes
No
No
No