Main Lcd Trouble - LG KP270 Service Manual

4.13 Main LCD Trouble

START START
Press END Key
to turn on the power ON
Is the circuit powered on?
YES
Reconnect FPCB.
LCD Work well?
YES
END
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Only for training and service purposes
NO
Follow the Power ON Follow the Power ON
Trouble shooting Trouble shooting
2V85_VLCD level at
NO
C232 is 2.85V?
Click TP1
Check control signal
and data.
YES
Check soldering of CN302,
CN903, CN801, CN902
YES
Reconnect LCD Module.
LCD Work well?
- 97 -
4. TROUBLE SHOOTING
NO
YES
NO
Change the main board
YES
NO
Resolder connectors
YES
NO
Change the slide key PCB
Change U202
Or LCD
LGE Internal Use Only