Lenovo B40-30 Notebook - Manual (Page 54)

Lenovo B40-30/B40-45/ B40-70
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
7 d b
7 d c