LG D337 - Main LCD TS

4. DOWNLOAD
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Only for training and service purposes
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3.19. Main LCD TS
The LCD control signals are generated by MT6582. It needs three external powers like VIO, VCI. And its interface
is MIPI having three data lanes and one clock lane.
Is the circuit Powered ?
LCD display is OK ?
Check LCD Power
+1V8_LCD_VIO(TP1),
+2V8_LCD_VCI(TP2),
LCD_MIPI_DATA (TP3),
LCD_MIPI_CLK (TP4)
LM3639(4400)
output LEDA(TP5)
START
END
Press PWR key
turn the power ON
Disconnect and re-connect
LCD Connector(CN7401)
Change the Main Board
The LCD works
Follow the Power ON
Troubleshooting
Change the LCD Module
Yes
Yes
Yes
No
No