LG L1150 Service Manual page 75

4. TROUBLE SHOOTING
START
Does the LCD itself has
no trouble?
Yes
Change
the Camera module.
Does it work properly?
Yes
It's Camera module's problem.
Replace the Camera module.
No
Go to the LCD trouble
No
Check the voltage of
PIN3 of Q601 is 2.85V
Yes
Check the voltage of
PIN3, 15 of CN2 is
2.85V
Yes
Check
the other signals of the CN2.
Is it OK?
Yes
Does the image
Appears on LCD?
Yes
Camera will work properly.
No Check the voltage of
PIN1 of Q601 is 0V
No
Resolder R1, R3
Check
No
the soldering of the CN2.
Is it OK?
Yes
Check
the soldering of
No
serial resisters of CN2
Is it OK?
Yes
Does the image
Appears on LCD?
Yes
Camera will work properly.
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No
Change the main board
No
Resolder CN2
No
Resolder the resisters
No
Change the main board