Lcd - LG -D855 Service Manual

3.14 LCD

LGE Internal Use Only
START
Press Power key to turn the Power on
Is the circuit powered?
Disconnect and reconnect LCD Connector
CN7100 and LCD module connector.
Yes
LCD Display Ok?
TP1 : 1.8V
TP2 : 5.5V
TP3 : -5.5V
Change the LCD Module
LCD Display Ok?
End
No
Yes
No
No
Yes
No
Yes
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3. TROUBLE SHOOTING
Follow the power on trouble
shooting.
Change the Main Board
Only for training and service purposes