Main Lcd Troubleshooting - LG L705i Service Manual

4.13 Main LCD Troubleshooting

Main LCD control signals are generated by MSM6280. The signal path is:
MSM6280 → CN501(80pin Con) → LCD Module
Start
Press END key
Key LED is on?
Disconnect and reconnect
The LCD connector(80pin Con)
Disconnect and reconnect
The LCD connector(44pin Con)
LCD display OK?
Change of new
LCD
Change the Main board
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
NO
GO to power on trouble shooting
Yes
Yes
Yes
Yes
No
END
Yes
NO
- 109 -
4. TROUBLE SHOOTING
LGE Internal Use Only