Samsung GT-I8350 Service Manual page 52

Level 3 Repair
8-3-11. TSP
Touch Screen does not work
Check LCD Connector on
Check the TSP supply
voltage is properly driven
Check the TSP control signal
Replace TSP Module
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Yes
Main PBA
Yes
Yes
is working
Yes
Yes
END
No
Reconnect the HDC601
No
Check the voltage of
C532(3.3V), R600(1.8V)
No
Check the ZD600, ZD601, R602
8-24
while touching.