Lenovo B40-80 Hardware Maintenance Manual - Lenovo B40-xx Notebook - Page 54

Fan and heat sink assembly

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Lenovo B40-30/B40-45/B40-70/B40-80 Hardware Maintenance Manual 1120 Fan and heat sink assembly For access, remove these FRUs in order: • "1010 Battery pack" on page 33 • "1020 Optical drive" on page 34 • "1030 Bottom slot cover" on page 36 • "1040 Hard disk drive" on page 37 • "1050 DIMM" on page 39 • "1060 PCI Express Mini Card for wireless LAN/WAN" on page 40 • "1070 Keyboard" on page 41 • "1080 Keyboard bezel" on page 43 • "1110 System board" on page 48 Figure 12. Removal steps of fan and heat sink assembly Disconnect the fan connector in the direction by arrow a. Remove the screw b and six screws c. Then remove the fan and heat sink in the direction as shown by arrow d. 3 3 3 3 4 2 3 1 Step Screw (quantity) 7 d b M2 x 5 mm, flat-head, nylok-coated (1) 7 d c M2 x 3 mm, flat-head, nylok-coated (6) Color Torque Silver 1.5~2.0kgf.cm Black 1.0~1.5kgf.cm When installing: Make sure that all the fan and DC-IN connectors are attached firmly. 50

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Lenovo B40-30/B40-45/B40-70/B40-80
Hardware Maintenance Manual
50
1120 Fan and heat sink assembly
For access, remove these FRUs in order:
•
“1010 Battery pack” on page 33
•
“1020 Optical drive” on page 34
•
“1030 Bottom slot cover” on page 36
•
“1040 Hard disk drive” on page 37
•
“1050 DIMM” on page 39
•
“1060 PCI Express Mini Card for wireless LAN/WAN” on page 40
•
“1070 Keyboard” on page 41
•
“1080 Keyboard bezel” on page 43
•
“1110 System board” on page 48
Figure 12. Removal steps of fan and heat sink assembly
Disconnect the fan connector in the direction by arrow
. Remove the screw
and six screws
. Then remove the fan and heat sink in the direction as shown
by arrow
When installing:
Make sure that all the fan and DC-IN connectors are attached
firmly.
Step
Screw (quantity)
Color
Torque
M2 x 5 mm, flat-head, nylok-coated (1)
Silver
1.5~2.0kgf.cm
M2 x 3 mm, flat-head, nylok-coated (6)
Black
1.0~1.5kgf.cm
a
b
c
d
3
3
3
3
2
1
4
3
b
c