3. TROUBLE SHOOTING
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3.11 Touch Sensor Trouble Shooting
START
Reconnect Touch Module CN7200
Change Main Board
Check Power
+3v0_TOUCH_VDD(C7202)/ +1v8_TOUCH_VDD
(C7203) Power is OK?
Touch Woks OK ?
Yes
Yes
Yes
Yes
Check I2C Line & Signal Line (R2202 &R2203)
Touch Works OK?
Change Touch IC(U7200)
Touch Works OK?
No
No
No
No
END
Change PM8110(U4100)
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