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4. TROUBLE SHOOTING
LGE Internal Use Only
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
4.17 Luminance Sensor on/off trouble
Luminance Sensor is worked as below :
Sensor ALC function On
→
Object moved at the Luminance sensor
→
automatically controls
brightness of the display backlight. (Very slowly)
Sensor ALC function On
Obj ect mov ed at the Lum inan ce sensor
LCD b acklight chang e (slo wly)?
No
Start
End
Yes
NO
Change the Main Board
YES
Work well?
U501 GC1 / 2 sig nal outpu t
NO
Change the Luminan ce sensor
U501
BL_ I2C_SDA / SCL output
NO
Change the Main Board
YES
YES
Summary of Contents for CT815
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