Only For Training And Service Purposes - LG GM750 Service Manual

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3. Technical Brief
3.12.4. Touch Interface
In GM750, 4-wire touch screen panel is used for user input method.
Two resistive layers make up a 4-wire touch screen panel and are separated by
insulating dots. The inside surface of each layer is coated with a transparent metal
oxide coating that generates a gradient across each layer when voltage is applied.
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LGE Internal Use Only
Table. MSM7200A Touch screen connections
Table. Recommended operation conditions
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Figure. Touch screen circuit
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Copyright © 2009 LG Electronics. Inc. All right reserved.
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Only for training and service purposes

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