LG KU250 Service Manual - Page 105
Main LCD Troubleshooting
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4. TROUBLE SHOOTING 4.15 Main LCD Troubleshooting Main LCD control signals are generated by MSM6245. The signal path is : MSM6245 → CN400 → LCD Module Start Press END key NO Key LED is on? Yes Disconnect and reconnect The LCD connector GO to power on trouble shooting Yes LCD display OK? No Change the LCD module END Yes LCD display OK? No Change the Main board END - 106 -
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4. TROUBLE SHOOTING
- 106 -
4.15 Main LCD Troubleshooting
Main LCD control signals are generated by MSM6245. The signal path is :
MSM6245
→
CN400
→
LCD Module
Start
GO to power on trouble shooting
Key LED is on?
Change the LCD module
Yes
NO
Press END key
Disconnect and reconnect
The LCD connector
END
LCD display OK?
No
Yes
END
LCD display OK?
No
Yes
Change the Main board