Samsung SM-F711B Service Manual page 207

6-6. Sensor
6-6-3. Magnetic Sensor Problem
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3. Check 'Capacitors' nearby '
on the PBA as below.
- VDD_SENSOR_1P8=1.8V
(Ref. C4068)
4. Check its 'Power Level' is OK
when it turned on.
- If not, replace PBA.
5. Check 'Sensor IC' 'U4010'
on the PBA as below.
- crack, open, short, etc.
6. If it has a problem, replace U4010.
7. Check 'Pads' nearby 'U4010'
on the PBA as below.
- I2C signal
(Ref. R5082,R5083)
8. If it has no signal, replace PBA
9. If not, Exchange the PBA
with new one and check the device.
CONFIDENTIAL
U4010
'