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Lenovo IdeaPad U300/U300s/U400 Hardware Maintenance Manual
1110
System board
(U300s)
Important notices for handling the system board:
When handling the system board, bear the following in mind.
• Be careful not to drop the system board on a bench top that has a hard surface,
such as metal, wood, or composite.
• Avoid rough handling of any kind.
• In the whole process, make sure not to drop or stack the system board.
• If you put a system board down, make sure to put it only on a padded surface such
as an ESD mat or conductive corrugated material.
For access, remove these FRUs in order:
• “1010 Base cover (U300s)” on page 54
• “1020 Battery pack (U300s)” on page 56
• “1030 Speakers (U300s)” on page 57
• “1040 Solid State Disk (U300s)” on page 58
• “1050 USB Board (U300s)” on page 59
• “1060 Keyboard and keyboard bezel (U300s)” on page 60
• “1070 PCI Express Mini Card for wireless LAN (U300s)” on page 64
• “1080 LCD unit (U300s)” on page 66
• “1090 DIMM (U300s)” on page 68
• “1100 Fan assembly and Heat Sink assembly (U300s)” on page 69