LG 55LH80YD-AB Service Manual page 64

Block Diagram
3.3V_TU I2C_CH6
ANT/ PAL CHIP
CABLE TUNER
XC5000
IN
Composite
Video
IN
Component
(Y,Pb,Pr)
IN
RGB
IN
FRONT
HDMI
IN
(x4)
BACK
Copyright ⓒ 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
3.3V_TU 1.8V_TU
DVB
IF
Demodulator
I2C_CH2
[CE6355]
TS
I2C_CH1 I2C_CH2
ANALOG
AUDIO
INPUT
FE_SIF
LCD/PDP
A/V Audio-1
DIGITAL TV
A/V Audio-2
PROCESSOR
COMP Audio-1
COMP Audio-2
RGB Audio
[LGE3369A]
HDMI
DIGITAL
AUDIO
INPUT
1.26V_1 1.8V_DDR
I2C_CH4
HDMI
Switch
(4-to-1)
3.3V_2
[TDA9996]
1.8V_1
I2C_CH2
I2C_CH4 I2C_CH6
S/PDIF
I2S
TX_SEL
3.3V_1
3.3V_L
MiCOM
[WT61P8S]
MEDIA-BOX(AUDIO)
3.3V_2 1.8V_1
3.3V_2 5.0V_1
HDMI
HDMI
HDMI
Transmitter
DeMUX
[SiI9134]
[PI3HDMI1210]
TX_SEL
I2C_CH2
I2C_CH4
HDMI
Receiver
5.0V_ST
[SiI9125]
Network
Processor
[SB9120]
RF
Transceiver
[SB9110]
Wireless TX Module
S/PDIF
OUT
SERVICE
only
3.3V_L
1.8V_L
3.3V_L
2.5V_L
1.0V_L
2.5V_L
1.5V_L
1.2V_L
1.0V_L
LGE Internal Use Only