Samsung SM-A307FN Service Manual page 98

8. Level 3 Repair
8-4-7-2. Proximity sensor
Proximity Sensor does not work
Check the voltage
C3102 = 3.0V
(Sensor's IO voltage)
Check the voltage
C3101=3.3V
(Sensor's LED voltage)
Confidential and proprietary-the contents in this service guide subject to change without prior notice
Distribution, transmission, or infringement of any content or data from this document without Samsung's written authorization is strictly prohibited.
Yes
No
Yes
No
Yes
No
END
No
No
Replace U3013
Replace U3011