Looking Up Fru Information; Locating Parts On The System Board - Lenovo ThinkCentre M83 Hardware Maintenance Manual

• 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
Power supply assembly
2
Heat sink and fan assembly
3
Memory modules
4
Primary hard disk drive
5
Internal speaker (available in some models)
6
Optical drive
7
Front USB assembly (available in some models)
8
Thermal sensor
9
Front Wi-Fi antenna
10
Front fan assembly
11
Front audio and USB assembly
12
Secondary hard disk drive (available in some
models)
13
System board
14
Battery
15
Microprocessor
16
Peripheral Component Interconnect (PCI) card
(available in ThinkCentre® M93/p computers)
17
Wi-Fi units
18
Wi-Fi antenna adapter
19
Rear Wi-Fi antenna
20
Cover presence switch (intrusion switch)
(available in some models)
21
Rear fan assembly
22
Keyboard
23
Mouse

Looking up FRU information

For detailed FRU information, such as the FRU part numbers and supported computer models, go to:
http:/www.lenovo.com/serviceparts-lookup

Locating parts on the system board

Note: Your computer comes with one of the following system boards.
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ThinkCentre M83 and M93/p Hardware Maintenance Manual
FRU description Self-service CRU Optional-service CRU
No
No
Yes
Yes
Yes
Yes
No
No
Yes
No
No
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
No
Yes
Yes
No
No
No
Yes
No
No
No
No
No
Yes
No
No