LG H990ds - VT Camera Troubleshooting

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3. TROUBLE SHOOTING
3.15.3 VT Camera
When VT camera is not working, check CN7400 and TP Voltage.
Image Checking Flow
BOTTOM
No
START
Camera Connector
(CN7400) connected?
Camera is OK?
END
TP: 2.8V, TP2: 1.8V
TP3: 1.2V
Replace Camera Module
No
Yes
Check MCLK
TP4: 24㎒
Yes
No
Yes
Camera is OK?
Replace Main PCB
No
Yes
TP1: 2.8V TP3: 1.2V TP2: 1.8V TP4: 24㎒
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