Samsung GT-P5100 Service Manual page 45

Level 3 Repair
8-3-10. TSP
Touch Screen does not work
Check TSP Connector on
U900 Pin 1 = 2.8V?(C939)
U908 Pin 1 = 1.8V?(C906)
Check the I2C signal
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Yes
Main PBA
Yes
Yes
C902 ≥ 2.7V?
C903 ≥ 1.728V?
Yes
Yes
Replace U902
Yes
END
No
Reconnect the SLC900
No
Resolder or Replace U900
Resolder or Replace U908
No
Resolder or Replace R901
Resolder or Replace R900
No
Resolder or Replace ZD903, ZD904, ZD905
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