LG 42LH20R - Block Diagram

LGE Internal Use OnlyCopyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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BLOCK DIAGRAM
RGB_PC PC_Audio TV (RF) COMP1
HDMI1 HDMI2
RS232
TX
232C Driver
ST3232C
Tx/ Rx : 15Vpp PC_R/G/B/HS/VS PC_Audio_L/ R :700mVrms MNT_OUT: 1Vpp
SIDE_V :1Vpp SIDE_L/ SIDE_R :500mVrms
DDR2(512MB)
L_SPK_OUT R_SPK_OUT
EEPROM
24C02
Comp1_L/ R :500mVrms
TUNER
AV1_VIN: 1Vpp AV11_LIN/RIN :500mVrms
PWM
NTP3100L
MNT_OUT
MNT_LOUT/ ROUT: 500mVrms
AV2 (Side AV)
MAIN SCALER
TXD / RXD : 5V Digital
COMP1_Y/Pb/ Pr: 1/ 0.7Vpp COMP2_Y/Pb/ Pr: 1/0.7Vpp IR HDMI_DATA_1 HDMI_DATA_2
HDMI1_SCL/ SDA
OUT_E_TX_CLK
OUT_E_TX_E OUT_E_TX_D OUT_E_TX_C OUT_E_TX_B OUT_E_TX_A
TU_MAIN
S I F
COMP1_Y/Pb/ Pr 1/ 0.7Vpp
AV1_VIN
PC_Audio _L/ R COMP1_LIN/ RIN
L_CH
R_CH
LVDS connector
TU_MAIN
SUB_SC
L
SDA
EEPROM
24C02
EEPROM
24C02
SIF
AV1_LIN/ RIN MNT_L/ R OUT
AV1 MNT_OUT
Comp2_L/ R :500mVrms COMP2_Y/Pb/ : 1/ 0.7Vpp
COMP2_LIN/ RIN
COMP2
OUT_O_TX_CLK
OUT_O_TX_E OUT_O_TX_D OUT_O_TX_C OUT_O_TX_B OUT_O_TX_A
PC_R/G/B/HS/VS
HDM 2_SCL/SDA
PC_SCL/ SDA
MNT_VOUT
AV2_VIN AV2_LIN/ RIN
IIS_OUT
USB
USB_DN/ PN
AUDIO
AMP
HDMI3_SCL/ SDA
EEPROM
24C02
HDMI_DATA_3
TMDS TMDS TMDS
HDMI3
USB For D/ L
EEPROM(256K) Serial Flash (8MByte)
RGB_PC PC_Audio TV (RF) COMP1
HDMI1 HDMI2
RS232
TX
232C Driver
ST3232C
±
PC_R/G/B/HS/VS PC_Audio_L/ R :700mVrms MNT_OUT: 1Vpp
SIDE_V :1Vpp SIDE_L/ SIDE_R :500mVrms
DDR2(512MB)
EEPROM
24C02
Comp1_L/ R :500mVrms
TUNER
AV1_VIN: 1Vpp AV11_LIN/RIN :500mVrms
PWM
NTP3100L
MNT_OUT
MNT_LOUT/ ROUT: 500mVrms
AV2 (Side AV)
MAIN SCALER
TXD / RXD : 5V Digital
COMP1_Y/Pb/ Pr: 1/ 0.7Vpp COMP2_Y/Pb/ Pr: 1/0.7Vpp HDMI_DATA_1 HDMI_DATA_2
_
OUT_E_TX_CLK±
OUT_E_TX_ ± OUT_E_TX_ ± OUT_E_TX_C± OUT_E_TX_B± OUT_E_TX_A±
TU_MAIN
S I F
COMP1_Y/Pb/ P : 1/ 0.7Vpp
AV1_VIN
PC_Audio _L/ R COMP1_LIN/ RIN
L_CH
R_CH
LVDS connector
TU_MAIN
/
EEPROM
24C02
EEPROM
24C02
SIF
AV1_LIN/ RIN MNT_L/ R OUT
AV1 MNT_OUT
Comp2_L/ R :500mVrms COMP2_Y/Pb/Pr 1/ 0.7Vpp
COMP2_LIN/ RIN
COMP2
OUT_O_TX_C ±
OUT_O_TX_E± OUT_O_TX_D± OUT_O_TX_C± OUT_O_TX_B± OUT_O_TX_A±
PC_R/G/B/HS/VS
PC_SCL/ SDA
PC_SCL/ SDA
MNT_VOUT
AV2_VIN AV2_LIN/ RIN
IIS_OUT
USB
USB_DN/ PN
AUDIO
AMP
HDMI3_SCL/ SDAHDMI3_SCL/ SDA
EEPROM
24C02
HDMI_DATA_3
TMDS TMDS TMDS
HDMI3
USB For D/ L
EEPROM(256K) Serial Flash (8MByte)