Introduction
If your keys appear to be broken, replacing the keyboard may be necessary.
To make sure the problem is with the keyboard, follow the troubleshooting guide.
When buying a new keyboard make sure it is compatible with PCG-F420.
CAUTION: Static electricity in your body can ruin your computer. Use an anti-static wristband.
Before you begin the repair, turn off your laptop and unplug the charger.
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The battery is located on the left side of the laptop, as shown by the red circle.
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Make sure the laptop is disconnected and turned completely off.
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Pull the plastic cover down (indicated by the arrow on the cover) and then swing it upwards to reveal the battery compartment.
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The battery can now be removed by pulling it.
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Use your Philips #00 screwdriver to unscrew the small screw counterclockwise. This screw is for the audio/visual jacks on the left side of the laptop.
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Unlock the cover between the keyboard and screen.
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Gently slide it to the right and lift it up.
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Exercise caution to avoid excessive force, as wires are connected.
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Lift up the cover and lean it against the display so it is out of the way for the rest of the process.
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Remove the small screw above the F6 key on the keyboard. Place screw in container to ensure it wont be lost.
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Find the green ribbon as indicated in the picture by the red circle. This is what connects the keyboard to the motherboard.
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Carefully unplug the ribbon cable using a pair of tweezers.
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Lift up the white bar near the connection to the motherboard, and lightly lift the ribbon to release it from the motherboard.
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Your keyboard is now safety detached. Necessary repairs or replacements can be made from here.
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To reassemble your device, follow these instructions in reverse order.
