Main Lcd Ts - LG -D175F Service Manual

3.14 Main LCD TS

The LCD control signals are generated by MSM8210(U2100) and powered by PM8110 (U4100 : PMIC).
Change the LCD Module
LGE Internal Use Only
Press PWR key turn the power ON
Is the circuit Powered ?
Disconnect and re-connect
LCD Connector(CN7100)
LCD display is OK ?
Check LCD Power +1V8_VREG_L14 (TP1),
Yes
+2V85_VREG_L19 (TP2),
MIPI_DATA (TP3),
MIPI_CLK (TP4),
LCD_LED_A (TP5)
Change the Main Board
The LCD works
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3. TROUBLE SHOOTING
START
No
Yes
No
No
END
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Follow the Power ON
Troubleshooting
Yes
Only for training and service purposes