Lenovo 10AQ, Maintenance Manual, Page: 76 / 184

Notes:
• 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 FRU description
Self-service CRU Optional-service CRU
1
Power supply assembly No Yes
2
Heat sink and fan assembly Yes No
3
Microprocessor No Yes
4
Memory modules Yes No
5
Optical drive (available in some models)
Yes No
6
Front audio and USB assembly Yes No
7
Card reader (available in some models) No Yes
8
Front Wi-Fi antenna No Yes
9
Front bezel Yes No
10
Battery Yes No
11
Hard disk drive No Yes
12
Peripheral Component Interconnect (PCI) card Yes No
13
Wi-Fi card module No Yes
14
Wi-Fi adapter card No Yes
15
Rear Wi-Fi antenna Yes No
16
System board No No
17
System fan No Yes
18
Keyboard Yes No
19
Mouse Yes No
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 E93 Hardware Maintenance Manual