Lenovo B50-30 Notebook - Manual (Page 54)

Lenovo B50-30/B50-30 Touch/B50-45/ B50-70
Hardware Maintenance Manual
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1130 System board
For access, remove these FRUs:
• “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 Led board” on page 48
Figure 13. Removal steps of system board
Disconnect the speaker connector in the direction by arrow .
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.
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