Only For Training And Service Purposes - LG KG290 Service Manual

CHECKING FLOW
START
Does the LCD itself
Has no trouble ?
YES
Change the camera
module, Does it work
properly ?
YES
Itís camera moduleís problem
Replace the camera module
Check the signals of the
FL400~FL403
YES
Camera will work properly
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Only for training and service purposes

NO
Go to the LCD trouble
NO
Check the voltage
of pin 8 of
U401 is 2.8V ?
YES
NO
Replace
FL400~FL403
- 79 -
4. TROUBLE SHOOTING
NO
Check the voltage
of pin 1 of
U401 LOW ?
YES
Replace the U401
LGE Internal Use Only