LG 42LX6500-SD (CHASSIS:LJ03R) Service Manual ▷ View online
3
* Each of analog audio signals shall be designed with “Common Mode (INCM) signal ”
3. Video Signal block (With Channel browser block)
D-sub RGB
HDMI 1
SIDE_CVBS Phone JACK
CVBS(SIDE_AV_CVBS)
B(DSUB_B)
REAR AV
Component 1
CVBS(REAR_AV_CVBS)
Component 2
Y(COMP2_Y)
H_sync(RGB_HSYNC)
Pb(COMP2_Pb)
Pr(COMP2_Pr)
Y(COMP1_Y)
Pb(COMP1_Pb)
Pr(COMP1_Pr)
G(DSUB_G)
R(DSUB_R)
HDMI_RX0+/-, RX1+/-, RX2 +/-, CLK +/-
HDMI_SDA
HDMI_SCL
LGE3556P
SD_CVBS2
SD_CVBS3
SD_Y1
SD_PB1
SD_PR1
SD_Y2
SD_PB2
SD_PR2
SD_B
SD_R
SD_G
RGB_HSYNC
RGB_VSYNC
HDMI_RX_0_CLK_P
HDMI_RX_0_CLK_N
HDMI_RX_0_DATA0_P
HDMI_RX_0_DATA0_N
HDMI_RX_0_DATA1_P
HDMI_RX_0_DATA1_N
HDMI_RX_0_DATA2_P
HDMI_RX_0_DATA2_N
HDMI_RX_0_CLK_N
HDMI_RX_0_DATA0_P
HDMI_RX_0_DATA0_N
HDMI_RX_0_DATA1_P
HDMI_RX_0_DATA1_N
HDMI_RX_0_DATA2_P
HDMI_RX_0_DATA2_N
HDMI_RX_0_DDC_SCL
HDMI_RX_0_DDC_SDA
HDMI_RX_0_RESREF
HDMI_RX_1_RESREF
499Ω_1%
499Ω_1%
A2.5VI
TMDS
DDC
HPD_1
HDMI 2
HDMI 3
HDMI 4
HDMI
4x1
Switch
(TDA19997)
IF + [MAIN]
CVBS [MAIN]
TDTD-V005F
Main tuner
IF +/-
IF_AGC
De-mode
MN88443
Channel Browser
IF - [MAIN]
EDSAFE_IF_P
EDSAFE_IF_N
EDSAFE_IF_N
SD_CVBS1
PKT0_CLK
PKT0_DATA
PKT0_SYNC
V_sync(RGB_VSYNC)
TMDS
DDC
HPD_2
TMDS
DDC
HPD_3
TMDS
DDC
HPD_4
GPIO-18
GPIO_17
GPIO_19
GPIO_53
RF
SIDE_Component Phone Jack
Y(SIDE_COMP-Y)
Pb(SIDE_COMP-Pb)
Pr(SIDE_COMP-Pr)
SD_Y3
SD_PB3
SD_PR3
TDVJ-H031F
Main tuner
FE_TS_VAL_ERR
FE_TS_SYNC
FE_TS_SERIAL
FE_TS_DATA_CLK
FE_TS_DATA_CLK
4
Audio L/R (for RGB)
AV
Component 1
REAR_AV_L_IN
Component 2
COMP1_L_IN
COMP1_R_IN
REAR_AV_R_IN
SIF
PC_R_IN
PC_L_IN
AUD_LRCH
AUD_SCK
AUD_LRCK
SPDIF_OUT
BCM3556P
SD_SIF1
AUDMX_LEFT1
AUDMX_RIGHT1
AUDMX_LEFT2
AUDMX_RIGHT2
AUD_SPDIF
AUDMX_LEFT3
AUDMX_RIGHT3
AUDMX_LEFT5
AUDMX_RIGHT5
I2S_CLK_OUT
I2S_DATA_OUT
I2S_LR_OUT
Main AMP
(NTP7000)
I2C_1(54)
RF
L
L
AUDIO SIGNAL PATH & I2C Map
LGE Confidential
Main tuner
(HNIM10_V1)
SIDE_CVBS Phone JACK
AUDMX_LEFT4
AUDMX_RIGHT4
SIDE_AV_L_IN
SIDE_AV_R_IN
COMP2_L_IN
COMP2_R_IN
Sub AMP
(NTP7000)
I2C_2
R
R
Woofer AMP
(NTP7000)
I2C_1(56)
HP/BT_R/LOUT_N/P
AUD_Ro/L0_N/P
Earphone AMP
(KA4558D)
I2C Map
I2C_0
AT TUNER / CHB TUNER
I2C_1
MICOM / NTP7000 / URSA3
I2C_2
HDMI SW / VIDEO ENC. / VSB DEMOD.CH BLOWSER, SUB AMP
I2C_3
NVRAM / LG5111 / P-GAMMA / WIRELESS / FRC(READY) /
Only 3 Amp
5
5. HDMI block
TMDS1/2/3/4[8]
TMDS_OUT[8]
LGE3556P
HDMI_I2C
CEC_
REMOTE
REMOTE
FET
IC18101
MICOM
UPD78F05
IC18101
MICOM
UPD78F05
DDC_I2C_1/2/3/4
HPD
HPD_1/2/3/4
HDMI_CEC
TDA19997
HDMI 4x1 Switch
(IC98300)
TDA19997
HDMI 4x1 Switch
(IC98300)
5V_HDMI_1/2/3/4
HDMI_5V
6
LGE3556
GND
USB_RREF
4.02K
100pF
6. USB block
USB1
USB_DP1
USB_DM1
+5V_USB
USB_DP1
USB_DM1
USB PWR
Switch
(IC302)
D3.3V
USB_PWRFLT_1
USB_PWRON_1
5V
USB2
USB_DP2
USB_DM2
+5V_USB
USB_DP2
USB_DM2
USB PWR
Switch
(IC301)
D3.3V
USB_PWRFLT_2
USB_PWRON_2
5V
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