Samsung SM-M307F Service Manual page 79

8. Level 3 Repair
8-4-18. VT CAMERA
"Camera" function does not work
Check the Camera connector on Main
Check the voltage
C7023 : 2.8V
C7020 : 1.05V
Check the VTCAM_MCLK is
24MHz (R7034)
Replace the Front camera module
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Yes
PBA
Yes
Y
es
No
Yes
Yes
END
No
Reconnect the HEA7003
No
Resolder or Replace U7001
No
Replace the PBA