1140 Base Cover, Speakers And Bluetooth Card - Lenovo B570 Hardware Maintenance Manual

1140 Base cover, speakers and bluetooth card

For access, remove these FRUs in order:
• "1010 Battery pack" on page 34
• "1020 Dummy card" 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 38
• "1060 DIMM" on page 39
• "1070 PCI Express Mini Card for wireless LAN/WAN" on page 40
• "1080 Keyboard" on page 42
• "1090 Keyboard bezel" on page 45
• "1110 LCD unit" on page 52
• "1100 System board" on page 49
Figure 14. Removal steps of base cover, speakers and bluetooth card (continued)
Remove four screws
d
arrows .
Step Screw (quantity)
b M2 × 3.5 mm, flat-head, nylok-coated (4)
Remove the bluetooth card in the direction shown by arrow
c
, and then remove the speakers in the direction shown by
3
3
4
Lenovo V570/B570
3
3
4
Color Torque
Black 2.5 kgfcm
e
.
5
57