Lenovo 70AL Maintenance Manual page 38

Components of server models with four 3.5-inch non-hot-swap hard disk drive bays
Figure 13. Components of server models with four 3.5-inch non-hot-swap hard disk drive bays
1
Cover presence switch
2
Power conversion board
3
Front panel
4
Optical drive bay 2 (with an optical drive installed
in some models)
5
Optical drive bay 1 (with an optical drive installed)
6
Hard disk drive bay 3
7
Hard disk drive bay 2
8
Hard disk drive bay 1
9
Hard disk drive bay 0
10
Front system fan 1
Note: The power conversion board
available in server models that come with a RAID card.
CRUs are parts that can be upgraded or replaced by the customer. If a CRU is determined to be defective
during the warranty period, a replacement CRU will be provided to the customer. Customers are responsible
for installing the self-service CRUs for this product. Customers also can install optional-service CRUs, which
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ThinkServer TS440 Hardware Maintenance Manual
11
Front system fan 2
12
System board
13
System board battery
14
Low-profile PCI card bracket
15
Main PCI card bracket
16
Expansion card
17
Heat sink and fan assembly
18
Rear system fan
19
Power supply
20
Four memory slots (installed memory modules vary by
model)
2 , low-profile PCI card bracket 14 , and main PCI card bracket 15 are