4-18
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Check the standard voltage of the adapter.
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Check if the battery is defective.
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Replace the main board.
14. The LAN function does not work.
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Check if the LAN cable is properly connected.
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Check if the LAN driver is properly installed.
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If the driver is properly installed, check if the LAN cable jack is out of order.
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Replace the main board
15. The USB function does not work.
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Check if the USB jack is out of order.
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Replace the main board
16. The wireless LAN does not work normally.
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Check if the WLAN slide switch is in the ON position.
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Check if the WLAN driver is properly installed.
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Check if the wireless LAN antenna cable is properly connected.
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Replace the main board
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4. Troubleshooting
