Lenovo B490 Notebook - Manual (Page 68)

Remove the USB board as shown in the following illustration.
1160 Thermal module
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
• “1150 System board assembly and USB board” on page 60
62 Hardware Maintenance Manual