Lenovo 10BN, Руководство по техническому обслуживанию аппаратной части

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• 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 No Yes
3
Primary hard disk drive Yes No
4
Front WiFi antenna No Yes
5
Power switch unit No No
6
Optical drive Yes No
7
Front bezel Yes No
8
Internal speaker Yes No
9
Front audio and USB assembly No Yes
10
Front fan assembly No Yes
11
Secondary hard disk drive (optional) Yes No
12
Battery Yes No
13
Peripheral Component Interconnect (PCI) card
Yes No
14
WiFi card module No Yes
15
WiFi adapter card No Yes
16
Rear WiFi antenna No No
17
Memory modules Yes No
18
Cover presence switch (intrusion switch) No Yes
19
Rear fan assembly No Yes
20
Microprocessor No Yes
21
System board No No
22
Keyboard Yes No
23
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 M78 Hardware Maintenance Manual