3. TROUBLE SHOOTING
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Only for training and service purposes
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3.14 Main LCD TS
The LCD control signals are generated by MSM8210(U2100) and powered by PM8110 (U4100 : PMIC).
START
Press PWR key turn the power ON
The LCD works
Change the Main Board
Disconnect and re-connect
LCD Connector(CN7100)
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 (TP1),
+2V85_VREG_L19 (TP2),
MIPI_DATA (TP3),
MIPI_CLK (TP4),
LCD_LED_A (TP5)
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