Introduction

This repair guide provides step-by-step instructions for replacing the keyboard of the ASUS Chromebook C300M-BBCLN12 keyboard. The repair may be required if the keyboard is no longer functional.

Remove the eight 9.0mm PH00 Phillips screws along the perimeter of the bottom housing.
  • Remove the eight 9.0mm PH00 Phillips screws along the perimeter of the bottom housing.

  • Remove the three 6.0mm PH00 Phillips screws from the center of the bottom housing.

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Separate the palm rest assembly from the bottom housing using the plastic opening tool.
  • Separate the palm rest assembly from the bottom housing using the plastic opening tool.

  • It is recommended that you start from a corner and run the tip of the plastic opening tool along the edge of the housing.

  • Lift the palm rest assembly slowly to prevent damaging the two cables connecting it to the motherboard.

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  • Flip back the hinges on the connectors that secure the wide black cable and the narrow white cable using the tweezers.

  • Disconnect the wide black cable from the motherboard by pulling the blue cable tab straight out of the connector.

  • Disconnect the white ribbon cable from the motherboard by pulling the blue cable tab straight out of the connector.

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  • Flip back the hinge on the connector that secures the white ribbon cable to the underside of the palm rest assembly using the tweezers.

  • Disconnect the white ribbon cable from the palm rest assembly by pulling the cable straight out of the connector.

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  • Remove the palm rest assembly from the bottom housing and lay it on a flat surface with the keyboard facing downward.

  • Remove the four 5.0mm PH00 Phillips screws securing the keyboard to the palm rest assembly.

  • Separate the keyboard from the palm rest assembly.

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Conclusion

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

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