LG KE600 Service Manual - Page 81
LCD display trouble
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5. Trouble shooting 5.4 LCD display trouble Check Points -LCD assembly status ( FPCB) -EMI filter soldering -Connector combination 2V85_MMC 2V72_IO VBAT R504 0 R505 0 DIF_D0 DIF_D1 DIF_D2 DIF_D3 DIF_D4 DIF_D5 DIF_D6 DIF_D7 JOG_PWDN JOG_DISK_B JOG_DISK_A RCV_N RCV_P 5 G1 10 G2 MLED MLED1 MLED2 MLED3 FL506 ICVE21184E150R101FR 1 INOUT_A1 2 INOUT_A2 3 INOUT_A3 4 INOUT_A4 9 INOUT_B1 8 INOUT_B2 7 INOUT_B3 6 INOUT_B4 5 G1 10 G2 FL507 1 INOUT_A1 2 INOUT_A2 3 INOUT_A3 4 INOUT_A4 ICVE21184E150R101FR 9 INOUT_B1 8 INOUT_B2 7 INOUT_B3 6 INOUT_B4 CN503 1 50 2 49 3 48 4 47 5 46 6 45 7 44 8 43 9 42 10 41 11 40 12 39 13 38 14 37 15 36 16 35 17 34 18 33 19 32 20 31 21 30 22 29 23 28 24 27 25 26 VBACKUP C511 56p C512 0.1u C513 C514 56p 0.1u C515 C516 0.1u 56p FL505 ICVE21184E150R101FR 1 9 INOUT_A1 INOUT_B1 2 8 INOUT_A2 INOUT_B2 3 7 INOUT_A3 INOUT_B3 4 6 INOUT_A4 INOUT_B4 DIF_CD DIF_WR DIF_VSYNC DIF_CS 5 G1 10 G2 IF_MODE1 DIF_RESET VIBRATORSLIDE_KEY_BACKLIGHT KP_IN0 KP_IN1 KP_IN2 KP_IN3 KP_IN4 KP_OUT3 KP_OUT4 END_KEY LCD_ID ccking Point LCD CONNECTOR Check signal line disconnection of the LCD FPCB At first check the LCD back light enable signal Check signal flow via EMI filter - 82 -