Introduction
This guide will include disassembling the CT702 tablet and partially removing the motherboard from the device.
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Place the tablet on a table with the portholes facing you.
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Use fingernail or plastic opening tool to gently pry the black panel around the portholes.
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Use fingers to pry the rest of the back off; slowly apply pressure from each side to break each clip connection.
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Remove the motherboard by unscrewing the four 4 mm screws along the edges of the board using a Philips 00 screwdriver.
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After removing the four screws, disconnect the two ribbon wires; to disconnect the wire lift up on on the plastic tab covering the wire.
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When the tab is in the up position gently pull the ribbon wire out of its connection.
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The speaker is located towards the edge of the motherboard. You will need to solder the speaker connections to remove it.
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To solder the connections apart take the hot soldering iron and gently touch it to the end of the wire at the connection to the motherboard. At the same time use tweezers to gently pull the wire away from the connection.
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To connect the new speaker you will need to solder the new wire connections onto the motherboard.
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Gently touch the end of the new wire to the existing connection, and use the soldering iron to heat the solder and connect the wire.
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Once the new speaker is connected, gently lift the motherboard and place it back in the frame. Be sure to line up the holes to screw back in place.
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Use a Philips 00 screwdriver to screw in the four 4 mm screws along the edge of the motherboard.
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After screwing in the motherboard, reconnect the ribbon wires to their connections.
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To do so, insert the ribbon wire into its slot and snap down the tabs on the wire's connection to secure them in place.
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To replace the back cover follow the first three steps in reverse order
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To reassemble your device, follow these instructions in reverse order.
