Looking Up Fru Information - Lenovo ThinkCentre M78 Hardware Maintenance Manual

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 fan duct
3
Heat sink and fan assembly
4
Optical drive
5
Power switch unit
6
Front audio and USB assembly
7
Front bezel
8
Front fan assembly
9
Internal speaker
10
Front WiFi antenna
11
Cover presence switch (intrusion switch)
12
Battery
13
Hard disk drive
14
Memory modules
15
WiFi card module
16
WiFi adapter card
17
Rear WiFi antenna
18
Peripheral Component Interconnect (PCI) card
19
System board
20
Microprocessor
21
Keyboard
22
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
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ThinkCentre M78 Hardware Maintenance Manual
FRU description Self-service CRU Optional-service CRU
No
No
No
Yes
No
No
Yes
No
Yes
No
Yes
Yes
Yes
Yes
No
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
No
No
Yes
No
Yes
Yes
Yes
No
No
No
No
Yes
Yes
No
No
No
Yes
No
No