Proximity + Ambient Light Sensor Does Not Work - Samsung SM-G973F Service Manual

8. Level 3 Repair
8-4-11. Proximity/Ambient Light sensor

Proximity + Ambient Light Sensor does not work

Check the voltage
L5101, R5100, C5203, C5204
Check the voltage
L5100, C5200 =3.4V
Check U5100's package, smd status
(crack, open, short, etc.)
Check U5101's package, smd status
(crack, open, short, etc.)
Check R5102 R5103
(I2C is OK?)
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Yes
No
=1.8V
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
END
No
No
No
No
No
Replace U5100,U5101
(If there is still problem, replace
Replace U5011
Replace U10002
Replace U5100
Replace U5101
UCP5000)