3. TROUBLE SHOOTING
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3.15 Touch
Touch control signals are generated by touch sensor.
Those signal’s path are touch sensor -> MSM8974
START
Disconnect and reconnect both of
CN7200 and Touch module connector.
End
Change the Touch window
Is Window cracked?
TP1 : 3.3V
TP2 : 1.8V
TP3 : 1.8V
TP4 : 1.8V
Touch operate OK?
Touch operate OK?
No
No
No
No
Yes
Yes
Yes
Yes
Change the Main Board
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