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ASUS VivoBook S400C I/O Board Replacement

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The I/O daughter board holds two USB 2.0 ports, the combination headphone/microphone jack, and an SD card slot.

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  1. ASUS VivoBook S400C I/O Board Replacement, Remove the Bottom Cover: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Flip the device over and remove the ten 5.7 mm screws with a Phillips #0 screwdriver.

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  2. ASUS VivoBook S400C I/O Board Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C I/O Board Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Use a spudger or your fingers to go around and lift the edges and release the back panel.

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  3. ASUS VivoBook S400C I/O Board Replacement, Disconnect the Battery: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Using a spudger, lift up the plug connecting the battery to the motherboard.

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  5. ASUS VivoBook S400C I/O Board Replacement, I/O Board: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C I/O Board Replacement, I/O Board: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 ASUS VivoBook S400C I/O Board Replacement, I/O Board: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Flip up the retaining latch on the I/O board ribbon cable.

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  6. ASUS VivoBook S400C I/O Board Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C I/O Board Replacement: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Pull the cable straight out of the connector by the blue tab.

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  7. ASUS VivoBook S400C I/O Board Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 ASUS VivoBook S400C I/O Board Replacement: crwdns2935265:06crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Remove the two screws securing the left hinge to the I/O board.

    • Pry the hinge up by hand to a 90 degree angle.

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  8. ASUS VivoBook S400C I/O Board Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the retaining screw.

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  9. ASUS VivoBook S400C I/O Board Replacement: crwdns2935265:08crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Lift the board on the ribbon cable side far enough to clear the guide pin(s) then pull it back away from the side of the case.

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To reassemble your device, follow these instructions in reverse order.

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Jerry Wheeler

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