Lenovo B4400 Notebook - Manual (Page 57)

Lenovo B4400
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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 and loosen four
screws , three screws to lift the fan assembly.
When installing: Make sure that the fan connector is attached firmly to the
system board.
a
b c
2
2
2
2 3
3
3
1