Main Lcd Trouble - LG -V909DW Service Manual

4.14 Main LCD trouble

Main LCD control signals are generated by T20.
Signal path : T20 -> LVDS transmitter -> LCD Module
(T20 and LVDS transmitter are located in AP board)
Change LCD
module
Yes
LGE Internal Use Only
Start
Press Power key Turn the
power on
Is the circuit
powered?
Yes
Disconnect and reconnect
LCD connector
LCD display OK?
No
Yes
Check power
VDD_WLED
VDD_3V3
No
Change AP board
LCD works well
THE END
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4. TROUBLE SHOOTING
No
Follow the power on
Trouble shooting
Yes
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