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Lenovo B4400
1120 Fan assembly and Heat Sink assembly
For access, remove these FRUs in order:
• "1010 Battery pack" on page 34
• "1020 Dummy card (Optional)" on page 35
• "1030 Hard disk drive(HDD)/Memory/Mini PCI Express Card slot
compartment cover" on page 36
• "1040 Hard disk drive" on page 37
• "1050 Optical drive" on page 40
• "1060 DDR3L SDRAM" on page 41
• "1070 Mini PCI Express Card for wireless LAN/WAN" on page 42
• "1080 Keyboard" on page 44
• "1090 Keyboard bezel" on page 46
• "1100 System board" on page 48
Figure 12. Removal steps of fan assembly and heat sink assembly
Unplug the fan connector in the direction shown by arrow
a
and loosen four
screws
b
, three screws
c
to lift the fan assembly.
1
3
3
2
3
2
2
2
When installing: Make sure that the fan connector is attached firmly to the
system board.
53
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