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3. TROUBLE SHOOTING
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Only for training and service purposes
LGE Internal Use Only
3.14 Main LCD TS
The LCD control signals are generated by MSM8210. It needs two external powers like +1.8V_VREG_L14 and +2.85V_VREG_L19.
And its interface is MIPI having two data lanes and one clock lane.
START
Press PWR key turn the power ON
The LCD works
Change the Main Board
Disconnect and re-connect
LCD Connector(CN80000)
LCD display is OK ?
Is the circuit Powered ?
Yes
Yes
Yes
No
No
No
END
Change the LCD Module
Follow the Power ON
Troubleshooting
Check LCD Power +1V8_VREG_L14(C8003),
+2V85_VREG_L19(C8006),
MIPI_DATA (FL8001), MIPI_CLK (FL8000)
LT8542(U8001) output LEDA(C8013)