Read LG 42LH90QR (CHASSIS:LP91C) Service Manual online
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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_VOUT
:
1Vpp
SIDE_V :
1Vpp
SIDE_LIN/RIN :
500mVrms
DDR2 SDRAM
(512MB)
L_SPK_OUT
R_SPK_OUT
EEPROM
24C02
Comp1_L/R :
500mVrms
TUNER
AV1_VIN
:
1Vpp
AV1_LIN/RIN :
500mVrms
PWM
NTP3100L
MNT_OUT
MNT_LOUT/ROUT
:
500mVrms
AV2
(Side AV)
MAIN SCALER
LGE376xA
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
DDC_SCL2/SDA2
MEMC_RXE2
±
MEMC_RXE4
±
MEMC_RXC3±
MEMC_RXC±
MEMC_RXE1
±
MEMC_RXE0
±
TV_MAIN
MAIN_S I F
COMP1_Y/Pb/Pr
:
1/0.7Vpp
AV1_VIN
PC_Audio_L/R
COMP1_LIN/RIN
L_CH
R_CH
FRC LVDS connector
TV_MAIN
M_SCL/SDA
MAIN_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
MEMC_RXO2
±
MEMC_RXO4
±
MEMC_RXO3
±
MEMC_RXOC±
MEMC_RXO1
±
MEMC_RXO0
±
PC_R/G/B/HS/VS
DDC_SCL1/SDA1
DSUB_SCL/SDA
MNT_VOUT
AV2_VIN
AV2_LIN/RIN
IIS_OUT
USB
USB_DP/DN
AUDIO
AMP
DDC_SCL3/SDA3
EEPROM
24C02
HDMI_DATA_3
TMDS
TMDS
TMDS
HDMI3
EEPROM
(256K)
Serial Flash
(8MByte)
EEPROM
24C02
FULL HD LVDS connector
FRC IC
LGE7329A
URSA_[C:D]
URSA_[A:B]
OPC_EN
DDR2 SDRAM
(2ea*256MB)
Rear Input
Side Input
LIPS
RL_ON/I-DIMMING
/DISP_EN
PANEL_STATUS
E-DIM
OPC_OUT1/2
EEPROM
for HDCP
(8K)
Serial Flash
EEPROM
24C02
EEP_SCL/SDA
EEP_SCL/SDA
M_SCL/SDA
LOCAL DIMMING
IC
LG5110
EEPROM
(32K)
LVDS_CH[1:2]
LVDS_CH[3:4]
LED Backlight
Control Driver Connector
VSINC/DIN/DCLK
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