1200 Dc-In Connector And Base Cover - Lenovo B490 Hardware Maintenance Manual

Removal steps of speaker assembly
1
Remove the screws . Then remove the speaker assembly
Step Screw (quantity)
1
M2.5 × 5.7 mm, flat-head, nylon-coated (4)

1200 DC-in connector and base cover

For access, remove these FRUs in order:
• "1010 Battery pack" on page 44
• "1020 Bottom slot cover" on page 44
• "1030 Optical drive" on page 45
• "1040 Memory modules" on page 46
• "1050 Hard disk drive assembly" on page 47
• "1060 PCI Express Mini Card for wireless LAN" on page 49
• "1070 mSATA solid state drive" on page 50
• "1080 Backup battery" on page 51
• "1090 Keyboard" on page 51
• "1100 Keyboard bezel" on page 54
• "1130 Microphone assembly" on page 58
• "1140 I/O board" on page 59
• "1150 System board assembly and USB board" on page 60
• "1180 LCD unit" on page 66
• "1190 Speaker assembly" on page 68
2
.
Color
Black
.
Chapter 7 Removing and replacing a FRU
Torque
4.0 kgf-cm
69