Einleitung
The video screen ribbon cable is a part of the device used for transferring data between the keypad and the motherboard. Consider checking this guide before replacing the keypad, since you might just have a disconnected or faulty ribbon connector.
Werkzeuge
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Press upwards with your index finger on the 4P4C connector as shown in the image.
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Pull the connector gently out of its socket.
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Flip the main body of the video phone so that the bottom is facing up.
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Use the Phillips #0 Screwdriver to remove the four Phillips head screws (6 mm) highlighted by the red circles.
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Lift the back case upwards to expose the inside components.
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Red rectangles indicate the three ribbon cables.
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The orange square indicates the blade connector.
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Disconnect the three ribbon cables from their insulation-displacement connectors by flipping up the black plastic clip.
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Gently pull the ribbon cables out of their insulation-displacement connectors.
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Disconnect the blade connector from the blade receptacle by gripping the exposed area of the blade connector.
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Gently pull the blade connector out of the blade receptacle.
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Use the Phillips #0 Screwdriver to remove the four Phillips head screws (6 mm) highlighted by the red circles.
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Gently lift up on the upper case to separate it from the keypad/speaker panel.
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The ribbon cable is highlighted by the red rectangle.
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The 2-pin JST connectors are highlighted by the orange squares.
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Disconnect the ribbon cable from its insulation-displacement connector by flipping up the black plastic clip.
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Gently pull the ribbon cable out of its insulation-displacement connector.
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To reassemble your device, follow these instructions in reverse order.
