LG 32LF20FR - Block Diagram

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Only for training and service purposes
LGE Internal Use Only
- 17 -
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)